Jeshua Lacock Presents Lost Shell Sand Casting for PLA 3D Printed Models

[curious aardvark]

way cool. dude !

But why is it a different method ?
Looks pretty standard to me.

[3DTOPO]

way cool. dude !

But why is it a different method ?
Looks pretty standard to me.

Thank you!

What is different is that with traditional sand casting the pattern is removed from the sand before the metal is poured. Since it has to be removable without damaging the fragile sand mold, it greatly limits the type of geometry possible (undercuts, cores, etc. become a design limitation).

With this technique, the pattern is left in the sand (allowing practically any geometry to be cast) and burnt out directly by the molten metal.

Hopefully I have answered your question, let me know if you have any other questions.