Build a cheap spot welder

[Kayos]

http://www.roadkillcustoms.com/hot-rods-rat-rods/video/video-feature.asp?v=vrlvqib94xQ#axzz3K1Qj9Ikc

My project for the weekend maybe

 

[brightspark]

hese fast he beat the pikeys to the bin what have u got to spot weld ???

 

[Maker]

This guy has a detailed post about this on Instructables if your interested.

 

[Kayos]

hese fast he beat the pikeys to the bin what have u got to spot weld ???

My thoughts on the pikeys too

Some of the van will need spot welding, I actually thought of hooking it up to my arc welder so it should cost about £zero In materials and just some time

 

[Kayos]

This guy has a detailed post about this on Instructables if your interested.

oooh yes, a mate sent the video link after we were discussing the new workshop earlier

 

[dannyp]

but would it have enough welly to actualy be usefull ?

 

[Shox Dr]

but would it have enough welly to actualy be usefull ?

I doubt it. Those electrodes look to be only 2-4mm in Dia. They won't take the current/duration

 

[Maker]

I doubt it. Those electrodes look to be only 2-4mm in Dia. They won't take the current/duration

Maybe he could use tig electrodes?

 

[Maker]

My thoughts on the pikeys too

Some of the van will need spot welding, I actually thought of hooking it up to my arc welder so it should cost about £zero In materials and just some time

You can buy a spot weld gun for a stick welder but they look like they use carbon air arc gouging rods so I doubt they're any good.

 

[Kayos]

You can buy a spot weld gun for a stick welder but they look like they use carbon air arc gouging rods so I doubt they're any good.

I asked on here and was told as they don't clamp the metal just splits apart

 

[dannyp]

i allways thought spot welders used raw power very low voltage but crazy amps. power being power your going to need a big transformer,

maybe same principul useing an old 110v site transformer might work

 

[Shox Dr]

i allways thought spot welders used raw power very low voltage but crazy amps. power being power your going to need a big transformer,

maybe same principul useing an old 110v site transformer might work

correct, 8k+ (ISTR), I've used one running 12k amp. With watercooled gun and cables. The first we bought that was said to do the job/workload. I melted the cables in the first 20mins (.9mm Zintec)