The Home Machinist!

Wow! Awesome engines, thanks for sharing the pics Steve!

Lester Friend of Yankee Shop fame would tell you to chuck up the wheel casting in the three jaw with the back facing out. Clean up the back of the casting and shoulder the flange area. Now it will sit nice and flat in the chuck when you flip it around and clean up the front, taking the casting to it...

I was looking at building a DIY RepRap around 2014 but decided I already had too many hobbies and at that time complete ready-to-run printers were expensive.

I purchased my printer last year and wished I had bit the bullet a few years back, besides making patterns it is great for prototyping parts.

So this is done for cope/drag greensand casting? I have wondered about 3D printing for "lost wax/foam" type casts. Haven't had much to do with it. Nice work though, piece looks good. Yes exactly, split pattern with core and petrobond sand, petrobond gives a very fine surface finish vs. greensand. (...

steamingdon wrote: ↑

Sun Oct 06, 2019 6:52 pm

Nice job Frank.

Thanks Don!

Thought I'd share a project I have been working on for the past few months, the future owner of the final part might be a member here on Chaski - not sure. The original casting of this steam dome cover (goes on a British 7 1/4" gauge design called Paddington ) was found to be too small for the boile...

I just cast this safety valve dome the other day with a 3D printed pattern, had to ram up the mold 4 times in order to get it right and the print held up just fine. I wouldn't give it to a foundry to have a production run of parts made with it but its plenty strong enough for hand ramming. IDMK3951....

Awesome!

Looks great! How are the dies held in place?

Ross Grant of Pioneer Valley Live Steamers scratch built a Uintah Mallet in 1" scale. I know its not what you are looking for but thought it was neat enough to post! 68446458_10218005016009905_3085103338321084416_n.jpg Pic credit: François Desaulniers of MLS. It can also be seen at the 27:44 min mar...

Hi Jack,

Looks awesome! That sure is a lot of work! Maybe you posted earlier in this thread but how long will the entire track be?

Hi All, Im getting ready to start making the cylinder pattern for my 5" scale project. If I have a 6" diameter cylinder bobbin dimension to hit on the finished casting, would i jist simply turn the wooden pattern to fit an outside caliper set to 6" off of a shrink rule, or would i need to use a dou...