My 8x4 had roughly 700kg in it , which translates to 800 euros, 100 euros for gas, 60 euros for MIG wire.1 day receiving and cutting the material, about 2 full days of welding it alone by myself. Yes i moved it alone around here. Managed to do it at around 1mm precision or less.

250Amp MIG which cost me around 350 euros and 300e Rage Saw were previous investment, when i decided i will fabricate things. And 500kg welding table / which i made later/

I will charge at least 2000 at the blink of an eye for that job, especially having in mind that i welded it slowly so it's not under stress.

Similar frame will cost more than 2500 in aluminum and will take same amount of time to put together. A week.


My advice is to go 100x100x3mm if you do it at home, as bigger is no good to cut by any means. Best will be if you speak with someone local and design your frame with bigger beams as possible, say 200x200, which will greatly simplify things. You will have to find someone who does metal structures , for them these beams are small in their mind. They may even have some scrap enough to build a house.