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| Making a milling vice |
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| tom osselton:
I didn't think aluminum would warp like that! |
| awemawson:
Unlike cast iron, at least with aluminium you can apply judicious bending and it will take a slight bend without cracking - usually :scratch: |
| vtsteam:
I don't think I've ever had an aluminum casting warp after milling and I've got a lot on my lathe and accessories -- but I guess it can. Other than the lathe bed, and headstock, I haven't done as massive castings in general. The lathe has stayed straight, and I didn't age it before scraping. |
| NormanV:
I have heard of iron castings warping and hadn't expected aluminium to be any different but went ahead with machining it anyway. My previous experience with the bed of a Gingery lathe did not result in any warping but that has better bracing than this casting. I could try bending this one to reduce the warp but I don't have the facilities to do it. An idea has just come to mind, I will put it back in the furnace and heat it for 30 minutes, and then let it cool down in the unopened furnace. It normally takes an hour for this amount of aluminium to melt. so that should stress relieve it. It will be interesting to see if it makes a difference. At least the only cost will be the gas! |
| Doc:
Most aluminum's are notorious for warping during machining. During machining you set up a surface stress and it will warp. We fight that problem all the time where I work. Some of the aluminum types are horrible and warp with even the lightest machining cut. |
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