rotarysmp

Fourth casting - Pulley

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Thanks Anon for your working on the forum migration.

I needed a pulley for the new mill head I am building. The pattern came out taller than my cope.



To lower the spilt line I molded a pot plant tray.




I made the pouring spue too thick, and it poured a bit short. I am still pouring too hot, as you can see the surface finish improving, from very rough on the sprue, to quite smooth on the hub.



Luckily I was generous on the machining allowance on the hub, as I got a lot of shinkage and voids. The bore will be 35mm (the hub is 50mm diameter) so that big void should clean up.


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