This is just finishing off the delrin nut for the table mill. After turning the blank on the lathe, I finished it off on the mill. This was basically just cut the top and bottom off to reduce the height to 30mm, then mill the slots either side (which will be used for position adjustment).
Acetal is seriously nice to work with. It cuts very cool (no lubricant or cooling required!), and the surface finish is just fantastic.
The only (very minor) downside is that it compresses slightly under load, so I needed to do a few passes on the slots to get them the right side.
Easy machine, relatively cheap (cost me ~$50AUD for a 1000m x 50mm rod), nice finish, tough. What's not to like!? :)
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