Welding 5-8mm steel box-section tubes

[dazza]

or buy a 50 quid stick/arc welder and a box of 2.5mm rods. and your welding, plenty of stick welding vids on youtube to get you started

[Boyan Silyavski]

I welded half of my first frame using DC stick welder, i agree, pretty easy to learn watching you tube videos. Plus you can grind and cover the sh*t when painting so at the end you will finish with pretty frame.

Bought a proper MIG then- 250A and changed the Chinese gun with bran new Wurth 250A gun, which is re-branded Binzel gun. Obtained from a boot sale for say 50 euro but similar could be obtained for 150euro new on ebay.

Wow, thats a monster combination for a serious manufacturing. Welds 10mm stuff like butter and it has never stopped due to duty cycle limitation, i believe it was something like 100% on 200A

Its good for aluminum also, due to the high amperage plus you will have the second gun for aluminum, when you upgrade one day the one that comes with the unit, which is short by the way, you really will need something like 4m gun hose. The unit on the link is exactly like mine though rebranded.