Lost PLA metal Casting at home Game of Thrones Copper Coin – challenge with ArtByAdrock + BigstackD

Lost PLA metal Casting at home Game of Thrones Copper Coin – challenge with ArtByAdrock + BigstackD

You know nothing, Jon Snow.
Jon Snow should have been King, I know that much. Bran the Broken? He only acted as bait
for the Night King. Jon’s earned it, whether he wants it or not!
Anyway, that’s enough of that… it’s casting challenge time again and this time
it’s Copper… Just 1 Kilogram or 2.2 pounds… what can
we do with it? Well as you’ve guess from my opening rant,
I fancied doing something Game of Thrones related and I thought of the Starks… The
Starks would use Copper for their currency. No namby-pamby Gold for them. So the idea
of a Copper Coin was born in my tiny mind. And of course on Thingiverse, there’s already
a beautiful example of this same concept, though this fabulous design was a little too
involved for me. But I was able to take inspiration from it to design my own, simpler and smaller
version using Fusion 360. Just like with my John Wick coin, I worked
in layers to create depth. There’s an Ironing setting in Cura that
I’ve been experimenting with. It melts and smooths the top layer a little, and I’ve
tried that here. It’s quite pleasing except for around the Wolf’s head… that didn’t
look very nice to me. So I used just the end of a file to lightly scrub away any print
lines. There’s no other sanding or wax filling… other than a light sanding of the back. I
want some blemishes this time. I wasn’t sure how many I could make with
I kilogram of copper, so I printed off 12 from ordinary PLA.
Some folks have said to me that joining things to the sprue with wax is difficult. It just
takes a little practice, but how’s this for an alternative. Simply take a wax sprue,
drill a few holes, insert the 3D print, and then lightly melt the wax around it. This
creates a waterproof join. The bottom section of the sprue base with
its built in pouring basin can still be used. The wax sprue is simply pushed into this and
then melted a little in the same way. I used old copper piping for my metal source
and weighed out exactly one kilogram. Let’s have a quick look what my mates are
up to. That has to be one of the prettiest pours
I’ve seen. One of these bottom ones doesn’t look too
good. I’m very pleased with these. They’ve polished
up nicely. They’re not perfect, but they’re rustic,
just like Stark coins would be. Of the eleven I have here, this is the worst.
And this is the best. Not bad. Folk have been asking me if I’ll sell some
of the things I cast. So I’ve set up an Etsy store if you’re interested. I’ll
post anywhere in the world and the proceeds will help support my channel, so thanks to
those that make purchases. These coins weighed 25 grams each on average,
so with the metal that’s left over and by re-melting the one failure, I could have potentially
made 22 coins here. I hope you enjoyed this one guys. Do please
check out my fellow challengers BigstackD and ArtByAdrock. And check out my Etsy store
if you can… and send in any suggestions for things you’d like to see on sale there.
Thanks for watching guys. Take care.


  1. I gotta admit Iā€™m pretty bloody jealous with that pile of copper coins they are friggen awesome. šŸ‘šŸ»šŸ‘šŸ»šŸ˜

  2. Amazing that you were able to capture the solidification process of the metal. Just like the textbook description; from the mold walls into the center of the metal with the center where the columnar grains are meeting solidifying last.

  3. Watching metal freeze never gets old. Awesome filming. Nice coins too. Makes me think I'll have to try the lost PLA for some coins of my own.

  4. Hey the shows not over. Now you can find out what that show really symbolized. Let me help you, a show where the good guys are the bad guys! And the bad guys are the good guys.

  5. Your videos have inspired me. There are so many people casting on youtube but your's are honest and you show your failures in details, which we can all learn from.
    I have all the parts for an electric furnace EXCEPT the ceramic heat-proof bricks but I have all the electronic parts, SSR and heating coil wire and I hope to get that up and running before this Autumn. If only it would stop raining!
    I built my own 3d printer, have half a CNC milling machine I have designed so far… so how hard can an electric furnace be? <8^0

    I do my own 3d design using Fusion360 and your videos are very informative about how to move from PLA parts to cast Al parts.
    Thank you. Keep up the good work. Keep posting. Keep making…
    BTW You make coins and nik-naks. Add some copper to your Al (not Zn as your furnace is indoors and we don't want you poisoned!) and make something in an alloy?
    Thanks again…

  6. Nice work Geoff. Glad that the pour went smoothly this time around. Don't need any more heart starters like last time.

  7. Would you mind sharing your simpler coin print file? Id love to try this for some early casting attempts šŸ˜€

  8. You've come a long way since my last visit brother. Very nice result and I hope the sales go well…. We still need to talk about the brass stuff that I want to have made if you are still up for it. Well done!

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