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The Renault Welding Thread

30-200 amp mig sorry.
and 20-200 tig

it was this one or a very similar variant

 
Got to go site welding where there’s no power , dug out my old Honda powered mosa 200 amp , been stood for over a year New fuel , little bit of two stoke down the bore , few gentle pulls , plug back in . Second pull she sparks into life . Dig out the 3.2 rods and have a play . DF76808E-8410-412D-8558-B0ED2FE24AF8.webpCC1C8523-3933-4DD4-B10F-2394D64EDD1A.webpA2E361BA-6799-46F9-8046-8D45B2CE0176.webp
 
That review has a very interesting part at the end where they inspect penetration of the 200amp invertor welder on 6mm fillet weld. I would suggest watching it as a good learning topic and continuation from our previous discussion.

The 3 in 1 welders all have the same problem including my one with Tig which is the touch or scratch start. Should be OK for what we are doing but in an ideal world you don't want that contamination.
Had a watch ,he explained it very well , if it had been on a 16amp plug it might have faired slightly better . But did reinforce what you had said previously. They are comfortable upto 5-6mm , has any body reviewed the 200amp Kemppi in the same way ?
 
There must be something in the air , Kemppi evo 200 turns up Monday, The machine is generator safe ,and will work through a 100m of cable, great for my site work . Will have a play Monday .
 
Kemppi rocked up
Literally just had a quick play for 10 minutes, very impressed. 5mm plate no problem . Going out to site tomorrow to start earning its living
 

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Bought one of these for myself as a Chrimbo pressy..........I've been looking at TIG for a while,


Got it off Union Mart site, not bay as they gave a 5% discount, I'd ummed and arrred for a while, but I've got a seat base and a tank to repair for an old Jap bike to do, spent best part of 6 months on and off doing bathroom, so though I'd give one a shot.
Reviews are pretty good, and I'm not fooling myself that I'm going to be knocking up stainless manifolds with it, I'm just a fool in his garage playing about.
I looked at R tech and no doubt it's superior kit, but lots of lower end stuff is re branded PRC stuff, despite the German sounding name of ROHR it's just basic kit.
Instructions are tat, extras like mask is a poop scoop, but the rest looks good, all switches look and feel nice, clamps are better than my old SIP, torch looks good quality, case is well made, what's inside.....I don't know, no pedal, basic two pin on/off switch on torch.
I've gone with another Hobbyweld cylinder but in pure argon flavour, a ton deposit and £48 inc VAT for a fill ( 9L), another reg and some tungstens, so I'm about £400 all in, cheapest R tech was 370 plus vat, plus gas bottle, so I'd be nearer 600 with that, a SIP would be a bit cheaper than that, after that you're getting near a grand and after that.....well that's not fart skinning budget.....
I did toy with selling my current MIG and getting a better one with more amperage control, mine is a crap toggle switch affair, as I know TIG may be beyond my ability, but I'll have a play and see how it goes, worse comes to worse, bottle goes back, I get deposit back, tat TIG goes on ebay, or gathers dust on shelf.......don't try, don't find out.
 
Great thread Idea. Totally agree with @Turbell about power source if you want to do a lot of welding worth speaking to a sparky about a dedicated socket. Esp. if your consumer unit is near where you want to weld. I Get on better with TIG and Gas, because you can see the pool better and have a bit more control. Mig is all about set up as once you are going its throwing wire at the job whether you like it or not. Well worth teaching the Wife/girlfriend to adjust the wire speed when setting up and doing tests it is amazing to see and hear the difference while you weld.Also Agree with @Norwich Nick on the fact that prep is everything. @Duncan Grier it would be better to chamfer the box corners at 45 deg with a grinder before welding together to give better penetration. I used to like watching our welding contractors (Gas Industry) welding up spools for alterations/renewals on the national network. Amazing to see them throw up 2 bits of 36" pipe ground at 45 deg then use welding rods with the flux removed as spacers to give the correct gap between the pipes. I remember remarking to the workshop foreman (ex boatyard) that it must have been a nightmare to get into a large fitting to put the root in as it was a beautiful continuous weld that looked like it had been done by a submerged arc machine. He looked at me and said 'what you on about you daft Fu**er, that is the back of the weld' This had been done by 2 different guys working on opposite quarters using sticks, it always amazed me that one large weld may take close on to a box of sticks with a cap run over an inch wide. We became good friends over the years,and I learnt a lot from just watching the guys. I still call in from time to time to scrounge materials and get the odd job done that is beyond my equipment or skill level. JUST DON'T ASK THEM TO WELD ANYTHING THIN!!!
 
Here you go.....my first ever TIG weldIMG_20210127_154943124_HDR.webp

Filler rods haven't tipped up yet, this was purely to make sure it works, where this is an actual weld is where I tried some mig wire as filler, it's 0.9 plate just butted up, sounds very strange, very different to MIG, first issue I can imagine is hand steady, I seem to shake like a shitting dog....that and being conscious of not letting tungsten touch the workpiece or anything when I put it down, baby steps for now ...
 
When Tig welding rods are important. I use supersteel for general work. Ordinary oxy rods do not work, don't know about mig wire. Usually best to spark up and melt a little filler rod and get your pool formed then off you go adding filler to keep the pool constant. more or less the same as oxy welding for technique.
 
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