flat belt pulley pattern

[dallen]

(09-14-2013, 04:56 PM)EdK Wrote: David,

It looks like you bored the shop supervisor to sleep. It must be the soothing sound of chip making.

Ed

Ed he see's thing thru closed eye's that would scare most people. but I like him, we're in the middle of battle of the fleas at the moment, damn pest.

(09-14-2013, 05:22 PM)doubleboost Wrote: Made my day watching that
A great achievement that casting
John

Thanks again John it was a pretty good day yesterday when I shoveled the sand back and found a whole casting hiding in it.

(09-14-2013, 05:56 PM)TomG Wrote: Excellent work David. A casting like that is well beyond the ability of most amateur foundrymen and you pulled it off on the first try.

How did that casting machine with the addition of the copper?

Tom

Tom that casting is well within the reach of any home caster, you just have to have the right size equipment to do it, to tell the truth many times making the pattern I had my doubts about me being able to finish the pattern I don't have wood tools except for a couple of wood planes and a jig saw.

the metal machined ok, acted dry but to me most home cast does that, I added the copper to help with the machining, I think my biggest problem with turning was not having the right inserts for aluminum, I have one left hand boring bar that is 1 inch in diameter that uses a cnmg 3 insert but of the three inserts I have they were all for ferrous metals.

It may of helped if I had thrown in some silicon, but I think one of the biggest problems with the machining was the way I had it in the lathe, (only way I was able to put it back so i could cut the outside concentric with the bore, if I had of been able to of put it on the shaft like I wanted I could of turned the rpm up some.

Ok here's the picture that I have been waiting on, the one that shows it on the machine BUT REMEMBER i ONLY SAID i WAS GOING TO MAKE IT.

damn but don't it look good on there.


one thing thou I said I was going to make it, never said anything about it lining up with the other one. there's about an inch of difference in alignment.


and all the things except the clamp handle on the ram couldn't get it in the pic without backing way up.