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investment cast/4th pour (1 viewing) (1) Guest
Aluminum casters unite. Here is your spot. Enjoy!
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TOPIC: investment cast/4th pour
#161
investment cast/4th pour 3 Years, 6 Months ago  
this pour is our first all lost wax molds.

i used the same investment formula,
and the same burn out.

good news and bad news...

one of the molds didn't pour!

i think i know what went wrong

so i will try to give some advice that is hard earned.

when we loaded the kiln,

there was one very large mold and 4 smaller ones.

i placed the large one in the middle and surrounded it

with the smaller ones.

long story short

there was still moisture or wax in the investment.

( it never got hot enough )

it makes for a show but not good parts.
irontwig (Moderator)
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#162
Re:investment cast/4th pour 3 Years, 6 Months ago  
as the investment is broken away you can see

the mold is not completely burned out.

the mold should be white through out.

oh well a lesson learned,

longer soak at temp.

and different loading of the kiln...

next time.

a small frown from the casting gods i guess,

irontwig
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