Todays Project - What did you do today?

[dallen]

(04-09-2015, 12:37 AM)Roadracer_Al Wrote: RE: casting, yes, that would be a great project.  I did some casting with lead when I was a kid, and I understand the process.  I actually have a fairly challenging pattern-making project which I'd like to tackle: my '69 Yamaha DT250 is totally stock, and I'd like to cast a copy of a GYT or WebCo performance head for it.  It's an air-cooled 2-stroke, the performance head is 2x heavier, with much bigger fins for better cooling than the stock head.

if you have one to copy the ideal way would be to make a silicon rubber mold of it then make a wax cast from that then do an investment and burn the wax out of the investment.

next up easiest way would be to use cnc and make a wax pattern then do the silicon rubber mold.

hardest way is to make a wooden pattern which would probably have to be a multi part pattern (more than two pieces). Hardest of anyway that you do it would be the core boxes, but with an original you could cast the air passages and such in rubber then make core castings from them.

Anyway you look at it, its not an easy project, but then again others have done harder projects.

DA