Metal Casting using 3D-Printed PLA Mould

Printing a PLA mould, use this to cast Pewter

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I discovered (by accident) a new way of doing Metal Casting.

I was having trouble with RTV High Temperature Silicone Mould Making Kit. With some left over liquid Pewter - I poured it into a PLA mold and it did not just melt. With this in mind I have experimented....

After some work I now have got this as a workable method for producing metal objects. Given my past hacks - Traffic light cufflinks - Hackaday as proof I made some Hackaday Cufflinks.

Source files are at Youmagine - and Tinkercad Assuming you have a 3D-Printer, if you invest a few pounds for a ebay-toaster-oven and some lead-free Pewter make you own HaD Cufflinks.

Tip etc are in the videos.


Mould to print

application/sla - 846.18 kB - 12/25/2015 at 15:38


  • 1
    Step 1

    A long description

  • 2
    Step 2

    A short description, featuring the HaD cufflinks

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Elliot Williams wrote 09/20/2021 at 10:01 point

How does the PLA not melt?  I'm amazed that this works at all.

But Hackaday cufflinks are definitely the proof of the pudding!

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Ahron Wayne wrote 04/03/2021 at 16:52 point

A classic! Love that DIY 3d printer. Never would have expected to see casting in PLA. 

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