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1.5% is good. No blind holes (like text), thru holes are ok if thier not very long. Do you have a picture of the piece you want done?mhackney wrote:Thanks DavidF, I'd love to try something. How much shrinkage do I need to account for?
Im sure there are alot more people doing it than we know about. Have any pictures of your work? What investment have you been using? Vacuum assist or just gravity pour?precisionpete wrote:LOL, I thought I was the only one doing the lost casting!
I love how the pla goes "poof" and I am left with a mold for metal.
Just a trainee here, nothing to go on but reading material and the few videos to watch 100 times on the web for pointers.
So far I have cast only small brass parts, ~ 1.5" diameter X 2" long it's just like tuning in a 3d printerfiguring out all what works and what doesn't.
Now for a serious question................why are you guys on the EAST coast and I am here on the WEST coast?
It's warmer here and I have an entire shop with "play toys"
Complete machine shop and 1 computer kiln and 1 manual.
I can only handle ~ 8lbs of metal in the kiln.
Unfortunately work gets in the way of this "hobby" so casting has taken a back seat lately.
Oh and to answer the original question it was a 7 hour print for a mold and luckily I came back after dinner to shut the machine off.
Machine should have been done (yes the estimate complete time is way off) and it was still running long after it should have been done.
Good thing at the 3/4 way done point the 3d printer decided to make an Afro of the top of my part.
Enough about me, back to reading.