Metal Casting Zone

build a dam around the bottom of the cylinder.

let the plaster set up.

now you are ready to mix investment.

(i think there is investment info in general casting questions)

basically: plaster
sand
pearlite
water

fill your cylinder carefully!

you don't want to disturb the wax.

once the investment has set up you can remove
the plastic, tar paper, and wood.

( this is all trash, just needed to make mold)

these investment mold will be burned out in a kiln.

this dries them out and melts the wax leaving a cavity.

once the molds have been burned out...

we blow them out with air and pour.

this process has a lot of waste,

but the parts and detail is worth it.

once the metal has cooled.

the investment is broken away.

there is your raw finished part.

the gating and vents are cut off.

( this metal can be re-melted )

all that is left is some work with the file.

here are a few of the pieces cleaned up.

the fit to the original steel is great.

i hope that following this piece all the way thru

is helpful to everyone.

good luck with your casting...

irontwig

You don't reuse the plaster ?

I have ground it up and mixed it with new, it mades it set a bit faster,
(I did not heat it that hot ether and sofar is more tests than anything.)

I'm saveing all the big juice cans (1/2gal ?) to do lost wax in, do you think they will work ?

very interesting read!!!! I particularly like the amount of details fro irontwig.



Thanks for the information.