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Lost PLA Metal Casting Process

by 3DTOPO, published

Lost PLA Metal Casting Process by 3DTOPO Apr 30, 2013

Description

This is a complete documentary of the process I use to transform a 3D printed PLA part to a machine ready aluminum alloy casting: youtu.be/WWVVSZP3Au4
Short version: youtu.be/0bxOzCgUj_U

The furnace used for this documentary is here: thingiverse.com/thing:55415

WARNING: This is for informational purposes only. Fire, molten metal and high temperatures are potentially extremely dangerous. 3DTOPO Inc. accepts no responsibility for damage and/or injury of any kind caused by the use, incompleteness or inaccuracy of the information provided in the videos linked herein.

Recent Comments

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There is only one foundry for a couple hundred miles. Return phone calls and emails are optional. I have no idea what they are going to charge, but I guess I'll just have to show up one day with a completed mold. And play a drum until someone will pour some metal for me..... my backup-backup plan involves a farrier.

Warning, reading about this thing, and especially watching the video may cause day dreaming and in extreme cases insomnia . Please see a blacksmith or foundry worker for treatment if you are exposed.

Thanks! Think I used a bandsaw.

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Comments

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grb352 on Mar 9, 2014 said:

Warning, reading about this thing, and especially watching the video may cause day dreaming and in extreme cases insomnia . Please see a blacksmith or foundry worker for treatment if you are exposed.

grb352 on Mar 8, 2014 said:

So if I take my mold to local forge and have them safely pour. and I have a drill press, a band saw, grinding/wire wheel combo and a file. (and some basic high school shop classes) could I have made and cleaned up the part in your video? or is the cleanup process crazy-hard?

grb352 on Mar 29, 2014 said:

There is only one foundry for a couple hundred miles. Return phone calls and emails are optional. I have no idea what they are going to charge, but I guess I'll just have to show up one day with a completed mold. And play a drum until someone will pour some metal for me..... my backup-backup plan involves a farrier.

3DTOPO on Mar 9, 2014 said:

Sure aluminum is very workable so you can clean it up anyway you like - even give it a mirror polish. For my purposes, however, no cleaning was needed.

tshephard on Jul 7, 2013 said:

Very cool :) What did you use to cut off the gates?

3DTOPO on Mar 9, 2014 said:

Thanks! Think I used a bandsaw.

cabennet on Jun 12, 2013 said:

so you need to scale up 300% from the true dimensions?

3DTOPO on Jun 19, 2013 said:

Scale up 3%

Pomeroyb on May 10, 2013 said:

Why put the plaster in sand once you burned out the plastic? Seems like a rather useless step.

3DTOPO on May 10, 2013 said:

It was so (1) the molten aluminum could develop more hydrostatic pressure and (2) allow for a more massive riser. Risers are important reservoirs of molten aluminum that stays molten hopefully long enough to feed the cast as it shrinks as it solidifies. The more massive the riser, the more likely it will be able to feed the cast as it solidifies.

kojinakata on May 6, 2013 said:

Is it possible to go through this process with ABS printed objects?

3DTOPO on May 7, 2013 said:

I haven't done ABS but in theory it should work. There is a possibility that it may not burn out as cleanly as PLA but certainly worth a try!

DivineShadow on May 2, 2013 said:

Great Video, I learnt something, especially on the safety side. Kudos!

3DTOPO on May 7, 2013 said:

Awesome, glad to hear it!

cerberus333 on May 1, 2013 said:

Very nice videos!
Thanks for sharing

3DTOPO on May 1, 2013 said:

Thank you and thanks for watching!

3DTOPO on May 1, 2013 said:

Thank you and thanks for watching!

3DTOPO on May 1, 2013 said:

Thank you and thanks for watching!

EricYoung on Apr 30, 2013 said:

Nice informative videos. Love your robot dance at the end!

3DTOPO on Apr 30, 2013 said:

Hhahaha! Thanks EricYoung, glad you enjoyed!

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