Dumpster_diving
Cast Iron
- Joined
- May 18, 2017
- Location
- Massachusetts
I’ve got a cast iron flywheel where the hub broke away at the key way. Due to the age of the unit, it’s not practical to obtain a replacement flywheel, so I’m going to attempt to TIG braze back the missing material. I turned a male mandrel of stainless bar stock with the same taper that I’m going to use as a dam, to keep the braze from filling up the unbroken portion of the flywheel bore. I need to mask the stainless somehow, to keep the bronze from sticking to the male plug. Ordinarily I would use soot from an acetylene flame to coat the plug, but I don’t have access to an OA torch.
Suggestions for a simple masking agent (i.e. readily available at a hardware store) to use in place of acetylene soot? That won’t off gas too much to ruin the adjacent braze build up?
Dychem? Spray paint? Sharpie?
Suggestions for a simple masking agent (i.e. readily available at a hardware store) to use in place of acetylene soot? That won’t off gas too much to ruin the adjacent braze build up?
Dychem? Spray paint? Sharpie?