Paul,

The mold should weight about 3 to 4 pounds and i guess after the pce machined should weight about 8 to 9 pounds, the bearings are much lighter then heavy ball bearing and the shaft made in one pce with planet housing which this one i dont know how much it will weight. I know we can find it  on Rheno but i dont know those commands.i still have to apply several coat of polyurethane and sanding so i will be ready in a week for the foundry and i am wondering what is the aluminum grade i should go and then i can searching for the right foundry.


Jean Prudhomme

Nice pattern work Jean.

I think your wall thickness's are too thick.
Shoot for 1/4 inch to 3/8th inch thick max.
Do you have shrinkage and draft allowances?


Go for 356 T6. Most foundries can heat treat.


Also use a little bondo to fill the depressions in
the wood as the casting will look exactly like the pattern.

It will also be hard to remove the pattern from the sand
if it is not perfectly smooth.

The foundry will let you know about that right away :)

Paul Lamar