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Yesterday's investment casting

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Dick Morris:
After spending a couple of weeks repairing and upgrading some of my casting equipment I did some casting yesterday. Six flasks attempted, four successful.

One failure was because I didn't allow enough investment to cover the bottom of the flask and some of the investment fell out when I removed the flask from the burn out oven.

I attempted two cylinders for western rivers steamboat engines. One looks OK but has a lot of finning. This may be because I heated the 3" x 9" flask too quickly during burn out. The other has a hole in it, I don't know why. These are just over 6 inches long and weigh .9KG/2 pounds each.

Two flasks had a bunch of U-joint parts like those in a previous post. They were successful.

I'm particularly happy with some 1/8 scale patent plates that go onto the side of a locomotive smokebox. They are 1.9 inches long and the letters are only .050 inches high. I continue to be amazed at the amount of detail that this process produces. Both the "wax" and casting are shown.

crueby:
How did you make the pattern for the patent plates? What was the material for the pattern, and what was it cast in?

gbritnell:
Yes I'm curious also. How did you make the small lettering on the pattern?

tghs:
I've looked at western engines for years,, what about just doing castings for the ends and joining them to a center tube section? in my plan stash is the Eade's designed civil war USS Osage,,,

bent:
Dick,

Is the patent plate 3d printed in wax?  Or did you 3d print a mold for the wax?  Looks great in the finished form!  :popcorn: :ThumbsUp:

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