R Tech Portable Arc Stick MMA Welder Pro 175 (240V)
- Built with class leading Siemens IGBT's - Not inferior Mosfets
- MMA Arc Stick Welder
- Portable & Lightweight
- 175 amp maximum output
- Robust carry case
- Anti-stick technology
- Automatic arc force - enables easy arc starting
- True 4.0mm electrode capacity
- 16A 240v input required for welding at 175amps, 125 amp output at 13A input
- Complete kit - supplied with 3M Earth and Electrode leads
- 5 year collect and return UK warranty - What is this?in the unlikely event of machine failure, R-Tech will pay to collect, repair and return the Mig welder to you quickly- No quibble warranty
- MMA Arc Welder
- Portable & Lightweight
- Robust carry case
- 175Amp output giving true 4.0mm electrode capacity
- Complete kit - supplied with all cables
- All you need is some electrodes and you are arc welding!
- 16A 240v input required for welding at 175amps, 125 amp output at 13A input
- Generator friendly - 6KVA Recommended
- Duty Cycle 20% @ 175Amps
- Duty Cycle 60% @ 100Amps
- Duty Cycle 100% @ 80Amps
- Electrode Capacity 1.6 -4.0mm
- Cooling fan with thermostatic protection
- Package Includes - R-Tech Pro-Arc175 arc welder, 3m Earth & MMA Leads, Mains Cable, Owners Manual, Rugged carry case
- Net Weight 4.8KG Dimensions 290x130x210
- 5 year collect and return UK warranty - What is this?in the unlikely event of machine failure, R-Tech will pay to collect, repair and return the Mig welder to you quickly- No quibble warranty

The R-Tech PROARC175STL carries the following warranty:-
- PROARC175STL - 5 Year Warranty
- Earth and Electrode Leads - 3 Month Warranty
R-Tech machines are designed to be robust, easy to use and highly reliable but in the unlikely event that your welder or plasma cutter requires attention, R-Tech promise to:-
- Arrange collection via next working day UK courier [48hr offshore]
- Quickly repair the machine at our Technical and R&D centre in Gloucester
- Deliver back via next working day UK courier [48hr offshore]
- All costs covered by R-Tech - Yes, Collection, repair and delivery!
No questions, no hassle, just honest and reliable service - A true no quibble warranty
Most of our competitors only offer return to base [RTB] warranties - you have to pay and arrange to get it back to them which can be a hassle. Many others offer warranties that have clauses and if you don't have it serviced yearly by them, at your cost, the warranty will be void.
Other benefits of owning an R-Tech machine include:-
- Free friendly and knowledgeable technical advice via phone and email
- Free machine setup help always available - We want you to get the best from your machine
- Ten year Duty-of-Care on all our machines, giving you piece of mind that spare parts will be available if needed
- Video's to show how to use and setup your R-Tech machine.
- 2 year extended warranties available at a minimal cost.
Don't just take our word for it - see our customer reviews page to see what real customers say about the R-Tech products and our service & support.
PROARC175 Owners Manual
DownloadR-Tech PROARC135-175 Spec Sheet 2023
DownloadR-Tech Welding Brochure Spring 2022
Download
Excellent
R Tech Portable Arc Stick MMA Welder Pro 175 (240V)
calculated from 167 customer reviews
latest reviews
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06 May 2025Only burned a few rods to try it out. Nice portable welder to have in the back of the car.
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29 April 2025Brought a lightly used 2 nd hand unit for a remote repair after a very troublesome jasic 180and then Used for general repairs and fabrication. Been pleased with the unit. Brought this for a elderly friend when asked for a good inverter welder No real issues as yet earth clamp internal strap given out but doesn’t stop it working.
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28 April 2025Arrived at 12h00, was out using it by 13h00 and really impressed with the results, even for a novice welder like myself
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19 April 2025Use on ground making and repairing. iWork has a sub contractor and rely on quality and yours needs a fixed handle.
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19 April 2025Used on farm welding anything . Seems a great little welder
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16 April 2025Finally got to use this today. So much better than my old transformer type MMA welder. Arc is easier to strike and gives a good weld bead.
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03 April 2025Looks sturdy and well built. At this point it has not been used due to other work commitments but from technical specifications, it seems a sturdy machine
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27 March 2025Good light weight powerful machine Very happy with it
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27 March 2025Good product
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25 March 2025Great lightweight site welder primarily used for steel edging works. Great quality.
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18 March 2025Welder used for repairs, some fabrication. Ideal for use outside and where portability is essential.
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09 March 2025A1 i got full set tig, mig and arc welder now very good welders
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03 March 2025Used in the fishing industry. I would recommend it to anyone Quality very good
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15 February 2025I use it for hobby projects, I would recommend it to anyone looking for a reliable inverter Arc welder.
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12 February 2025Seems an excellent welder. I’m a beginner and it does it all for you other than the actual welding!
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19 January 2025Nice welder would recommend.
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06 January 2025Excellent
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30 December 2024Recommended it to my father in law who will be the primary user. It appears to be a well made and robust machine. It will be used for DIY projects
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07 December 2024The machine performance is excellent. Would recommend it to anyone requiring a good inverter mma machine.
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30 November 2024good welder, used for farm machinery repairs
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24 November 2024I use it to go to site it is light weight come in a handy carry case even though it feels cheep and a bit flimsy don't know how long it will last but it will do for now. It would be good for anyone how just want to grab the welder and get welding quickly easy to setup and get going.
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17 November 2024I will use this product mainly for on site welding. I would recommend it to people who need a light compact welder. The quality of the product seems good, time will tell.
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12 November 2024MMA , stick welding , second welding set from you I also have a tig set , used it for the first time today , very good , good control
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25 October 2024small but does the job
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10 September 2024As a novice this has been a god send. The adjustability means that it can be set perfectly to the job and allows the preferred speed of use to match ability without compromising the weld. In capable hands this really would provide a very useful asset and it’s light weight and portability are a big bonus . The casing , strap, leads, and switches appear to be of good quality and the carrying case is sturdy enough to take the rigours of constant transportation should it be needed..I’ve used mine on farming equipment to date which is very robust heavy gauge steel and the unit has done exactly what it should, giving good solid joints and me more confidence to improve my skills. So for anyone new to welding this really is a superb choice, and for the experienced, and absolute walk in the park. And a major factor for me and many others would be the price point and customer service. The customer service reviews where fantastic which is so important now days and the price point is bordering on ridiculously cheap from my experience too date. A very well done to this company for making the whole experience great from ordering, to delivery and use.
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04 September 2024Want it to take aboard to use at my house in the Philippines so it's perfect pretty light and compact. Great product.
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03 September 2024Excellent little machine. I'm very pleased with this purchase.
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01 September 2024As a DIYer & landscaper, this is a fantastic little welding machine. I would recommend this for professional on site use as well as home use. Gives a nice clean weld from a nicely constructed machine! 10/10 so far!
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28 August 2024I finally got around to using my new welder and I am impressed with it. I was running 3.2 rods ,they ran really well. There's loads of power and a lovely smooth weld.
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28 August 2024Excellent
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12 August 2024Exact welder we already successfully use but needed another, and no complaints.
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14 May 2024Easy to use and light to move around
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14 May 2024No problems with any of rtech welders, I now have three, they are all working well.
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04 April 2024Great welder
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03 April 2024I love this welder , easy to weld with .makes me a better stick welder .light and portable. I wouldn't choose to have this style of stick clamp as i prefer the screw type but use to it now and no issues as yet.i don't like the short leads but they are light and i guess having the welder on a suitable extension lead is the answer. It remembers the amp settings from last time which is great . Does seem to upset radio when switched on which is a shame 🤔. I have no issues recommending this welder, for the money excellent 👌 👍
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27 March 2024Purchased this welder for our install guys working in the Czech Republic. Good welder and reliable.
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20 March 2024I weld with it ????????????????????????? Anyone Good
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19 March 2024excellent welder
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13 March 2024Good communication. Fast delivery, quality product
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10 February 2024Great compact unit ideal for keeping in the back of your pickup/van. Very easy to use and quality is spot on.
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01 December 2023Good value, good product
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30 November 2023Excellent product with the added knowledge of 5 yr warranty
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27 November 2023Very good product for the cost
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20 November 2023Great product quality build , but the real test is in 3_4 years time if its still going strong, so far I'm impressed for the price.
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12 October 2023Good price and nice equipment
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12 October 2023Automotive/agricultural To anyone who has a need for a light, portable stick welder. Quality appears to be good. Don’t think the digital amp reading is accurate but this doesn’t affect its performance
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25 August 2023After doing a couple of comparisons against other welders &finding out the only differences were £120 in r-tech favour & 5 amps (the others were 180 amps) I decided on r-tech & I'm glad I did it's a fantastic bit of kit easy to use does everything I need it to, everything seems to be of good quality also it was the only one that came with a case as standard & not an optional extra
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22 August 2023Spot on, I highly recommend
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20 August 2023Easy to use
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13 August 2023best arc welder I have ever used. great quality at a reasonable price. You get exactly what you ordered. Very pleased.
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11 August 2023I’m very happy so far.
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14 July 2023Welder used for my mixer making panels perfect Highly recommended for home or work light and portable
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11 July 2023It looks good but I didn't have time to use it yet.
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03 June 2023Brilliant little tool, needed at short notice to fabricate some 6mm wall box section. It easily did the job and the first weld I made, peeled itself perfectly.
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21 May 2023Excellent
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23 April 2023Have only used for one day so far but results are very good. Using a good quality rod makes a big difference. For the casual user this is the ideal welder as it is quick to set up and very simple to use. Quality looks good and with a 3 year warranty you would expect it will be.
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06 April 2023Only used it for a few minutes, but seems very good so far
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24 January 2023Excellent welder just shame about the box being a little to small
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27 December 2022Bought for diy projects. Very lightweight and easily portable.
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06 December 2022I use the product for mobile repairs It seems a good product so far ,perfect for farmers.
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28 November 2022use on general engineering repairs and adding balance weights to rotating equipment.
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20 November 2022Simple welder. Works well. Bought this to replace my ancient buzz box. Good for DIY home use. Can't say about reliability yet. You could supply it with a plug of choice fitted though as it's quite difficult you find a domestic plug that will accept the heavy duty wires. Also it would be good to have the tig options available such as a suitable **, consumables and gas regulator.
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10 November 2022odd jobs in the workshop mainly on site colleagues very good
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01 November 2022Very good quality and value for money.
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27 October 2022Bought as a back up to a workshop based mig welder. Very portable, ideal around the farm. Early days yet, but very impressed with performance.
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25 October 2022Still not tried this yet, looks good.
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17 August 2022Easy to set up Easy to use, excellent welds, compact size
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20 July 2022Can't comment too much on the product as haven't used it yet. I have only done a quick set up and test, so far so good. Great little welder for the money. First impressions are good, my only one critisism would be the carry case probably wont last long, quite flimsy, but really not bothered about that.
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13 July 2022I wish I had bought this years ago. So much easier to use than previous welder, very smooth from strike to continued arc. Very Easy to adjust, so easy to get optimal setting. Very happy with this machine
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04 July 2022Have not had need to use it yet.hopefully the quality will be as good as the last one
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31 May 2022A lovely portable MMA welding set, so easy for a novice to use and create professional looking welds
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23 April 2022Used for general fabrication and wrought iron work in retirement workshop
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01 March 2022It's a nice handy welder
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14 February 2022Must admit I've not actually used the welder yet, but it feels like it's good quality. Wish i didn't have to ar5e fitting a plug, but I do understand with it needing a higher rated one at higher settings..
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02 February 2022I Use on railway wagon restoration on the GCR at Rothley as well as DIY projects at home and metal sculptures. Good quality unit and lightweight and portable.
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11 January 2022Not for me, so cannot quantify.
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18 December 2021Excellent company to deal with good quality products, fast delivery times and high quality customer service Would definitely recommend
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07 December 2021Arc welder. Works well
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23 November 2021Great bit of kit
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12 November 2021Product is very good quality,
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13 September 2021repairs aroumd farm anyone very good quality
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09 September 2021Lightweight, portable and remarkably powerful for such a small unit.
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29 August 2021I have only tested the welder on arrival and it seems very good
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29 August 2021Hobby welder, having never tried anything like this before. It’s so easy to get to grips with. The quality is astounding and a welcome relief, when ordering on-line. I would recommend this product to anyone who is in the field or wanting a new direction for all makers
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04 August 2021Great, thankyou
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04 August 2021Not used welder yet
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20 July 2021the welder is well built and performs well. i'm no wwlder so don't really have enough experience to say what level of welding its suitable for but it serves my needs making bricklaying profile clamps and welding aluminium box sections
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14 July 2021new to welding but was highly recommended by an experienced engineer
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08 May 2021DC set goes out to fix problems on site. Been burning 3.2 and 4mm *** and it runs great. Good value and simple. Perfect for the job.
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05 May 2021I'm really pleased with it so far
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22 April 2021Excellent
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12 April 2021Does exactly what is says on the box, good quality, durable and user friendly
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09 April 2021Bought the welder for my dad as his old one was heavy n bulky, quality and performance are excellent
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08 April 2021I have an ex commercial steel boat and there are many odd jobs that I can do myself with this welder. I would recommend it to anyone with a 240v single phase supply. This is a lightweight and easy to use welder. I hadn't done any welding for several years but this welder quickly got me back into it.
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03 March 2021fabrication within the company, Other people in my trade, The product seems very good for the money.
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15 February 2021Does what it says on the tin - really great size.Very useable.
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13 February 2021👍bril
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27 January 2021Good machine and quick delivery
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19 January 2021Farming repairs, seems fine for that market
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15 January 2021MMA welder, good for beginners or professional. Good quality, easy to set up. Easy to use.
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16 December 2020Good and easy to set up
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15 November 2020DIY projects.
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12 November 2020Great little welder every farm should have one
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08 November 2020Tractor maintenance/repairs using hard facing electrodes. Anyone wanting a max 175amp MMA welder. Fine and good value viv a vis competition
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07 November 2020Not use it yet .
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03 November 2020brilliant machines
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21 October 2020Great machine to use with ease , used a friend, s for a job and had to get one
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20 October 2020Welder is used for site work, nice and light for carrying up ladders. Excellent product welds really nicely.
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12 October 2020Used for general welding applications. Amps set at the turn of the control and is brilliant when doing different weld position position that need more or less current. Runs 3.2mm rods like a dream and all sizes below. Really recommend the unit as weighs so little and packs away in its transport case off to the next job
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26 September 2020Just welding products together. Other people that use a welder. Very good quality.
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21 September 2020Absolutely the best welder I've used for stick welding
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15 September 2020Excellent, easy set up , good quality,
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08 September 2020I use it for DIY in my garage. I would recommend it no to big of jobs. It is lightweight for carrying round on the go. The machine is good quality and the included case keeps everything tidy.
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01 September 2020For the money a good welder
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20 August 2020Fantastic quality. Built to last. Premium products.
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11 August 2020Good quality inverter welding set.. great price with great after sales backbup.
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27 April 2020Perfect for farm use, would recommend to anyone who is looking for a portable arc welder made to a very good quality.
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15 April 2020Used on site and would recommend this product to any builder - great quality
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07 April 2020Machine is used to site weld structural steel and agricultural equipment, perfect for any mobile welder light and portable, works perfectly, really smooth output
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31 March 2020I use the welder to do all of my farm repairs including thin sheet to heavy gauge steel. I recommend the machine to anyone looking to buy an all round machine The quality is excellent and comes with a carry case which is handy
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30 March 2020Plug would be a good idea !
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18 March 2020Very robust and easy to use
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02 January 2020Spot on !
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13 December 2019Great machine, bought as back up set for the van but been using it more that my old oxford set in my workshop.
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10 November 2019Use the product for small repairs on my narrowboat. I recommend this product for small jobs. Some parts of the product need to be looked at on the quality side ie. Rod holder and earth clamp
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24 October 2019Great quality and value
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03 October 2019First impressions are good and the 3 yr guarantee gives peace of mind.
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30 September 2019Amazing welder very lite and portable
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26 September 2019Use on Shop floor
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11 September 2019I purchased this welder to construct decorative ironwork and as an upgrade to an old ac welder, welds so much smoother than the old buzz box, striking is instant, no more scratching around in the dark! Only time will tell on the quality but if its anything like the plasma cutter or mig welder it will be very well built and give years of service.
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10 September 2019Excellent quality superb welder
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15 August 2019Not had chance to use it yet but quality looks very good and friends will be shown it when it is in use
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01 August 2019High Qua;ity
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01 August 2019Great service and speedy delivery
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22 July 2019Great bit of kit. Time will tell.
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21 July 2019Great machine
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16 May 2019Highly recommended piece of kit. Very well made and performs very well indeed. Welds lovely..
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01 May 2019Very compact and efficient.
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06 April 2019I've been stick welding for 20 years with an old transformer machine. This new machine is in a different league. Marvelous it is. I don't have to put in a wheelbarrow to move it.
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02 April 2019Very pleased with item very powerful for its size. I would recommend this product and have done already. Quality it's good but maybe the electrode holder could be a little more heavy duty
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13 March 2019The welder is used for home/hobby welding and would highly recommend to anyone wanting an MMA welder as very easy to strike an arc and make good looking welds which I had found difficult in the past with other welders I'd used. Unit appears to be very well made for the price
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26 February 2019Its price according to what it offers..is beyond my expectations.It comes with a suitcase, so useful for me.I would recommend it to everyone.Guys at work were crazy about how good it was.I wish your country stays in EU so I can reorder again. Thank you
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26 December 2018I would recommend it for a novice it's is a very good piece of kit and I'm very happy with it easy use no gas
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12 December 2018we would recommend your products
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24 November 2018Great thanks
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21 November 2018Great for trade or diy, a very easy to use welder and will cope on a 13amp plug if the amps are kept below 125
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23 October 2018It is used for agricultural welding on various sites and own workshop. I would recommend it to anyone that requires a welder from a small engineering works to a hobbyist. It seems to be of good quality so far
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16 October 2018This is a great portable welder that ticks all the boxes. I have been using it to weld 5mm scaffold in to a sold frame. Whilst using an air feed mask this welder has been producing good penetration and clean welds without me even cleaning the galvanization before hand. It’s light, runs off a stranded 13am plug. I have been using this for just over a week and have complete hundreds of joints without issue. Great product ***
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29 September 2018Very good
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23 September 2018Welder arrived on time and works well
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08 August 2018I use the product for farm and home repairs,I’d recommend to anyone and the quality is great
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20 July 2018Very nice compact welder, looking forward to years of use.
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10 June 2018To be honest I haven't tried it yet but it's looking promising and if its half s good as my R Tech mig welder (which I have no doubt it will be) I am a happy customer!
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28 May 2018For off site welding work in tight spaces. Any other welder in a similar situation. Good value for money.
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23 May 2018****
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15 May 2018Bought this as a gift for a friend and to teach him to arc weld. I wish I had one of these when I was learning. Striking and holding a short arc is really easy with this machine. Had my friend producing good quality welds within 15 minutes. The size of this tiny machine belies it's capabilities. We ran quite a few 3.2mm rods non stop at 105- 115 amps with no issues. It did this with a 13 amp plug on it. Cannot yet offer comment on the reliability of this welder as have just received it.
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09 May 2018It seems to be a very impressive product, but I have not used it a great deal so far.
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07 May 2018On site at a marina. Everyone great service and product. Light, portable, powerful - Excellent.
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27 March 2018use it on farm , neighbouring farmers havent used it enough yet seems good up to now
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15 March 2018Great welder controls are excellent and simple to use for a novice like me
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27 February 2018I use the welder as a stick welder and was amazed how easy the machine made stick welding compared to other welders I have used, Good quality cables, and a nice light portable machine. Well pleased with it..................
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27 February 2018WILL BE USED AROUND FARM MUCH EASIER THAN MOVING MY 125KG TRANSFORMER ABOUT . WOULD RECOMMEND TO ANYONE. QUALITY OF WELDER SEEMS GOOD ONLY REALLY TRIED IT ON A BIT OF SCRAP METAL SO FAR
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22 November 2017Great company to do business with
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29 August 2017used to weld plating on a narrow boat. would recommend this welder as is light weight and has plenty of current for 3.25mm rods with plenty to spare.
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30 July 2017its not an all singing all dancing machine but at the moment it does the job well for what it was intended for
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11 May 2017So far so good on mild steel of various quality and thickness.
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04 April 2017Purchased welder for use at home. So much easier to use than my very heavy transformer machine, plus a more controlled weld.
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