The Home Machinist!

Dave, you make a very good point about having the pewter metal enter at the opposite end of the mold cavity, with the vent across from the entrance sprue. I will certainly make the next mold this way. What's interesting is the first couple of casts were perfect. The castings now, have a slight textu...

We have recently completed a spin caster http://www.granthams.com/Spincast/ and show the adventure so far. Have any of you folks worked with this? Issues with clamping pressure and venting the mold cavity have caused me some imperfect castings. Any pointers, suggestions and experiences would be appr...

We have had very good results using styrofoam beadboard insulation. It's easy to cut a shape with hot wire. A better finish is possible if dipped in wax. Take a look at this web folder http://www.granthams.com/Casting/ . We used sandblasting silica sand over the foam pattern.

Rod Grantham