S7 CUT-50 Plasma Cutter, 50A 110V/220V Dual Voltage, Non-Touch Pilot Arc, Clean Cuts up to 20mm, Built-In Air Regulator, IGBT Inverter for Home & DIY Metal Cutting

This is the third CUT series of plasma cutters I've purchased over the last 15 years, and this one performs quite well. The air pressure gauge on the front panel is nice to have, the controls are laid out nicely with an easily readable amperage readout. I've only made a trial cut in some 2 inch angle iron (3/16" thickness) and the cut was clean and fairly quick, with only a little slag left to chip off. This is a moderately lightweight machine, being inverter powered it's compact, easy to carry and move to jobs, and can run off 110 or 220V using the included adapter. This is the least expensive plasma cutter I've operated, and I'm pleased with it overall. I do have a few things I don't like about it, such as the power switch being partially blocked by the air regulator outlet (easy to fix, either mount the regulator in a different spot, or have a "master switch" to turn it remotely), the reinforced vinyl air hose that comes along should be replaced with a good quality air hose (I'll use the included one for a bit, but not a fan of vinyl hoses for air pressure, especially where it may come in contact with sparks/slag/molten metal), the hose clamps included could be higher quality, and the instructions are more or less just a few pages of safety warnings, but no information regarding duty cycle, recommended air pressure/slope (if running in 4T mode)/amperage chart for various materials and thicknesses. All these are my own personal preferences (except the hose clamps), and the settings chart can be found online at any number of sites (although 40 amps, 60 psi is generally a decent starting point IMO, if in 2T mode, slope has little effect, 4T I adjust the ramp up and down on the fly, but 2T is my normal operation mode).

This is incredible. I took a chance on this because the reviews were so good and I have been pretty impressed. The most important thing to look for is that no touch arc. The torch cable is long and the torch feels pretty good in the hand. While I have not tried a super straight cut or test its thickness claims, it has worked awesome on cutting scrap and I used it a few days rebuilding a rusty yard trailer that fell apart. I cut both rusty nasty steel off the trailer and cut up the new pieces to weld back in and I'm sure it saved me hours of work with a grinding wheel or gas torch. It is a bit power hungry on 110 volt. I kept tripping a 20 amp breaker when cutting long bits or when the arc wasn't stable. I do not fault the unit because I think it would be best on a 220 volt plug with higher amp settings. I'm installing a 220 plug on its own breaker for future uses. Hoping to try this on a gas generator soon for scrapping in the field. Overall this thing is a great buy at 170, despite the cheesy air fittings. I'm shopping for replacement parts for all the air stuff. The PTC and barbed fittings are straight thread, which is kind of funny. I'm not sure if the regulator is NPT or straight, but I'll replace it too if needed. I think all the air hoses could be routed and mounted much more efficiently and compact than they came with the hose clamps and such. I also found the ground wire to be pretty short considering how long the torch lead is. The ground clamp is also weird, but usable.

For a sub $300 plasma cutter with pilot arc, it does pretty well. I'll start off with the quirks of my machine. First, the screws that mount the air pressure regulator screw into double nuts on the inside. This means that you'll never mount the regulator without either opening up the box (as I did, see photos) or having loose nuts inside the case (super dangerous). Luckily, opening up the box required only a phillips #2 screwdriver. While inside, I did snap a few photos, in case any of you know what a plasma cutter should look like inside. I installed the regulator mount, double nutted, and put a dab of super glue on the backside. A couple of sheet metal screws would have been a better solution for the manufacturer. For what it's worth, I did not feel like I had done any damage removing the cover to install the regulator, everything inside was tidy and well secured. Second is the hilariously short "ground". Really, it's about 46.5 inches (120 cm) long. This will need to be addressed immediately for most of us. Third is the plug. It's a 50 amp dryer plug, which I suppose is adequate but expect to install one (NEMA 6-50) or convert. I adapted n extension cord, as I did not want to cut anything before verifying that it worked. Fouth is the cord itself, which is 12 gauge. Theoretically, I think it can just handle the amperage (25 amps on 2 legs is 50 amps), but it seems pretty weak compared to the outlet that it requires. I'm pretty sure that means that the unit is over-rated so you could probably get by on a 30 amp 230v plug. YMMV, but I don't see any way that 2-12 is going to carry 50 amps at 80% duty cycle without a fire hazard. I knocked off 1 star for these. On to readying and use. The air connectors are weak, but probably adequate for 60 psi, which is going to be your max. Set your air supply (at the compressor or in-line) at that so you never exceed 60 psi. I do not trust the pressure gauge supplied, but if my line pressure is only 60, then I am unlikely to rupture anything. For the quarter inch that I cut (poorly, more on that later), 40 psi is about right. A 1/4 npt male threaded air nipple will thread right into the regulator for quick connect. I used thread sealant and had no leaks. Make sure all electrical fittings are clean and tight. As an aside, dual voltage units are known to be weak in their switching (from 115 to 230v and back). It's always a good idea to not utilize this feature and just run 230v, if you can. This is true even with well known high end welding equipment. Also, make sure you clean the ground area. The torch can cut cut through slag and paint, but the ground cannot. So, I marked up and attempted to cut a piece of 1/4" angle. Nothing. After checking over everything, I found that the small tip under the cone was not tight (there are 2 metal tips under the ceramic cone). After that, I could cut. Almost immediately, I broke the standoff, and the result is a pretty crappy freehand cut. They'll get better as I dial in amperage and pressure, but I'll get a better standoff. The pilot arc worked flawlessly and the cut started off fairly neat. So, initial impressions... The plasma cutter performs basically as advertised. It is around 1/5th the cost of a comparable Esab unit, and prices equivalent to a set of torches. It's smaller and lighter than torches and won't get blow-uppy. My generator should be able to power it for most cuts. I tried to get the least expensive pilot arc unit on Amazon just to see how it would perform. Aside from the stuff above, all of which is correctable, it's a decent unit. In the future, I may upgrade the cord and correct the crimp on fittings as preventative maintenance, but I do want to see how well it does as built. I'll update if I have anything worth noting. Edit: I added a photo of a better cut with amperage at 38, air at 45psi and a skate on the torch. Looks quite a bit nicer, and upon . Pilot arc does work well, I added a shot of the torch . The dial labeled "A" is amperage, the one labeled "S" sets the delay time for shutting off the air after the trigger is released. I've only cut a couple feet so far, but it impresses for the cost. I tested the pressure gauge against a known good one, and they read close to identical up to 60 psi. I thought that I would find the torch sad and low quality and it is not. I am even finding that I like the trigger guard as it prevents activation when I lay the torch down on the table. This is a feature that I thought was decidedly "homeowner" level but I like it. Also, Amazon wants me to mention the sheerness of this product, it has none. No sheerness whatsoever. It's completely opaque. Thickness, as always, is in the eye of the beholder.

This is an amazing little machine. Easy to assemble. Easy to use. Well worth the money. With that said, I will not be using it on a daily basis. It will be used on a farm/ranch. So some months it will be used more than others. But it works very well for its intended purposes.

Machine worked right out of the box. I tested it, but since I didn't have anything immediately needing to be cut I put it away until I actually needed it. Upon second use attempt, which would be my real first use of the machine, I connected power connected my air line connected the fittings in the front including the nozzle and ground wire, hit the trigger and saw a tiny little blue spark but no actual flame or plasma Arc. I adjusted some settings and try it again but experienced the same issue. After checking I realize the nozzle had burned up and melted itself closed. As my first test run was only 5 minutes I thought this was very strange but I replaced it with the spare nozzle that came with the unit. I tried the machine again and experienced a very similar issue. This is when I realized that I was not getting any air out of the nozzle. I checked the fittings in the front of the machine and I was registering 40 PSI on the gauge, but was still not getting any air out of the nozzle itself. This is when I realized the fitting in the picture was never crimped or is missing a sleeve to help hold the hose in place. Since that part was preassembled from the factory I assumed that this is either something that was missed by quality control persons or was just a poor design from the start. I've been searched for a way to contact the seller of which I find no easy solution for doing so. Ultimately I'm stuck buying another machine at my cost and then returning this one at an inconvenience for myself. In hopes that the replacement machine doesn't have the same problem. If you look in the picture that I posted with this review you'll see where the black hose slides over the copper wire to the fitting that screws into the plasma cutter itself. I would advise that you check yours and make sure yours was either crimped or has some type of sleeve that slides in from the back to hold that hose in place as I see new easy or reasonable way for me to repair this on my own should this have happened in six more days when my return window to Amazon has closed. I hope this helps somebody else with their unit and I sincerely wish you have better luck than I did.

The title says it all, is it legit 50 amp, hell no, not even close, probably closer to 35 maybe 40 amp but I'm leaning towards 30-35 amp true power output. It uses non high frequency blow back style (the flow of air through the nozzle causes a circuit to close allowing the pilot arc to ignite and stay lit, so it's safe on sensitive electronics or even to use on cars and won't dry anything unless you like cut into the wires or ECU. I run it on 220v with a 50 amp breaker, it has its own dedicated double pole 50 amp 220 breaker in a sub panel that only has 2 of those and two 30 amp double pole 220 breakers, so am not going to have power issues at all, it cuts using very low air pressure in my opinion. Typically to cut something I would never go below 40psi period but I can easily cut sheet steel with one side painted with only 25amps and 30 psi. And it jams through it as fast as I can move the torch. The stupid stand off deal sucks, flip it around and use the side that is connected to the other side to clip onto the torch while the side with two separate halves is the side to touch the work, that way your guide deal won't slip or move as it will super easy if you clip it on the way it comes clipped on. Just be careful not to break the ceramic cone part. Works way way better that way. Gonna run it on some t6 6061 3/8" and 1/4" plate and see how it does with aluminum since that is a difficult area for plasma cutters or at least that has been my experience. Cutting round stock it should be able to blast through 0.5" stuff but truth is, it doesn't seem to have enough cut power to do so, who knows, I will grab some rebar to double check, all in all for the price and the size. It's ability to run 110 or 220v and it coming with the adapter to make that work, the only thing you need to buy is a male threaded pneumatic quick connect fitting, unless you want to hard line it to something but then that kills the whole point of it being tiny and light weight. There are two places the air goes into the machine, I find that kinda dumb but I'm guessing one is just for the air pressure gauge up front the other is the actual air that is used to feed the torch. Why not just add a y fitting internally I can't explain. It would keep shit much easier and more simple, less material and less crap to leak or fail. Anyhow look if you are in the market for a plasma cutter and don't need to cut anything over about 18 or 20mm so 4/5" or 3/4" ish cut(u will need to hit it witg a flapper disc after cutting something that thick, pretty much anything over half inch or so is gonna have those tell tale plasma lines. Below that it cuts super clean. Ymwv obviously but it's cheap, light, small, delivery is quick, and it comes pretty much everything to work out the box, the only lane thing is this, it has a nice long torch line, maybe 10foot or so but the ground clamp wire is all of 3 or 4 foot long, you want to connect as close to where you plan to cut as possible to ensure a steady clean uninterrupted cut, it kinda kills the point of thr long torch line since the material has to be clamped right next to the machine. Still a killer buy

Digital screen did not work...other than that works good

This thing works great. With 120V cuts 16 gauge sheet metal with ease. Very easy to use

Honestly I didn't expect much from a 200$ plasma cutter. If you are on the fence, just get one! Overall assembly and quality is top notch and doesn't feel like something out of PRC. The included fittings are metric and designed to be used with sealing o-rings, but they are not included. NPT fittings work fine with a healthy amount of Teflon tape. I chose to install a QD at the input instead of the provided barb fitting for ease of use. The unit itself is much lighter than expected and the handle and plastic parts are well fitted and comfortable to carry around. I grabbed a piece of 1/4 steel from my scrap bin. That was a leaf spring perch off a Dana60 axle. Real strong stuff. Melted like butter and the cut is sharp and narrow with minimal taper. Can't wait to actually try it for something proper.

Given the price for this unit, I was not expecting a great machine but this thing is surprising. Very light unit, set up with compressed air and it cuts steel like crazy. I gave it a tough job to start - an old fireplace insert that I broke up into pieces - 1/4" steel plate - I had killed my grinder trying to use cutter wheels trying to piece this up so I could move it. Impressive cuts - slow but it did the job. The consumables that came with it were high quality. I ordered some other cheap brand and they were junk (nozzles were not drilled clean) so ended up reusing these nozzles with the cheaper electrodes. All in all, I am impressed with this unit. If you are on the fence, I think you will be happy with it.

Pour le prix j’ai été vraiment impressionné. Je l’ai utilisé déjà quelques heures. Pour de la « tôlette » a body et ça travaille vraiment bien. Tu peux couper à une vitesse très élevée et tout les angles qu’on peut s’attendre d’un plasma. Évidemment, je lui ai donné plus de misère que ça. J’ai coupé du T1 1/4 de pouce assez facilement. J’ai dû adapter ma vitesse mais il a passé au travers sans problème. Je le recommande sincèrement. Incroyable ce que je peux faire avec cet outil là et surtout pour le prix. Je trouve important de commenter mon achat parce que c’est grâce au review d’autres utilisateurs que j’ai décidé d’acheter. J’ai vu aussi des commentaires plus négatifs. Je soupçonne que ces personnes étaient sur le 110V. Le mien a toujours été raccordé au 240V, sur le 110 ça me semble vraiment limite sans l’avoir essayé. Bref, livraison super rapide, produit dépassant mes attentes qui étaient très élevées (trop élevées pour le prix). J’ai pas été déçu, c’est le meilleur achat que j’ai fait cette année. Pour le 110V je sais pas. Quelqu’un qui a un garage avec du 220/240 et qui comme moi cherchait une alternative au torches acétylène/oxygen. Hésite pas et vas-y! Laisse toi pas tromper par le prix qui semble trop beau pour être vrai. C’est vrai! 😅 Tu vas être sur le cul!

This machine did not come with proper manual, I found one on line, but it is classified as poor in my mind. Further, the hose barb fittings need to have real pipe threads on them. Oct 27 /25 This machine just died. Normal use, duty cycle followed, kept clean and it just died. Not very old !!!!!!

I liked seeing the power switch wasn't totally covered by the air regulator water trap and hoses. I liked that the cord was a fairly heavy 220v and plug using a adapter cord to run the unit on 110 volts if you want to , the 54" ground cable is to short for my project but the cutters cable is slightly over 12 ft It was a nice light weight plasma cutter But I got a defective unit and after 2 messages to the seller with no response after 6 days i sent it back to them and bought another one of the same and used it for about 4 hours yesterday cutting 1/4" steel plate and light angle iron it is working great so far