View Full Version : welding cast aluminum
ok here goes, i need to weld up a crack in the block of my 4-wheeler engine and it's made of cast aluminum.
I have access to a nice miller TIG unit at school, and i have welded regular aluminum but i have never attempted to weld on cast. I do have an old lawnmower engine block also made of cast aluminum to practice on.
So i guess i was wondering if any of you guys have experience doing this kind of thing and maybe some tips to get it right
No body's tried anything like this? might have to find someone to do it for me
02-22-2012, 09:11 PM
Clean, clean, and clean it some more. Make sure to grind out the crack. This video has some good info in it
02-23-2012, 11:28 PM
Watch that video above me. The whole thing. Welding cast aluminum is black and white from regular aluminum. Its gonna spit and **** all over the place. dont worry if it looks bad because it will. just gently grind her down when your done.
SlvrdoHDmax can you post a link to the video it's not working for me
02-27-2012, 05:47 PM
02-27-2012, 05:51 PM
50% of what i weld at work is cast aluminum, Most of the time it runs good since it is new, but when you hit a dirty spot.... OH LAWD
02-29-2012, 07:56 PM
i have welded using aluminum tig and i had to do a dirty aluminum helix that got ground down bad and it came out good. just caked on the aluminum and ground to the the deg. i needed. as long as it gets bonded who cares what it looks like, rite. you can use a grinder or shaving tools to make it look pretty as long as you fill it with enough material.
thanks for posting that video it sound like it will help. hopefully i can find some time to weld it now
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