Successfully welded cast iron

[Braeden P]

The “spacer” on the Y axis for the the lead screw on my planer was missing a good chunk and it would be a pain to remake. So I decided to attempt to weld it. I heated it up to cherry red, set my welder for 3/16” then dropped it down a volt. I basically did tack welds to avoid building up too much heat.(Better welds than a blind folded ape) Put it back in the furnace after about 30 seconds. Did this about 10 time then heated it up to a brighter red then let it cool to room temp over 6 hours. No cracks so I turned it back to what it was and it held up. I will fill the voids with a mix of JB weld and cast iron dust then paint it.

 

[DavidR8]

Well done!

 

[RJSakowski]

Nice job! JB Weld already has iron powder in it so you may not need to add any filler.

 

[Jake M]

(Better welds than a blind folded ape)

I'm just going to sit here and remind myself that you didn't mean that personally... :-(

 

[markba633csi]

JB weld has iron in it? I didn't think it did
Nice repair job! Looks very presentable

 

[FOMOGO]

Came out nice. I probably would have brazed it, but what ever gets the job done. Mike

 

[Just for fun]

Looks great, good job man!

 

[woodchucker]

Nice job! JB Weld already has iron powder in it so you may not need to add any filler.

it has steel, not iron.

 

[RJSakowski]

JB weld has iron in it? I didn't think it did
Nice repair job! Looks very presentable

I checked the MSDS sheet and the original formulation contains 50% calcium carbonate (powered limestone). However, the back of the 10 oz. size tubes say epoxy steel resin and epoxy steel hardener.

 

[RJSakowski]

it has steel, not iron.

Steel is mostly iron. As a powder, I doubt that any of the mechanical properties matter much