This is a project that I have wanted to tackle for a while, which is making custom charcoal kilns for some of my micro-layout ideas. In this case, I opted to make the core with my CNC mill to show what could be done, but this could have been done by hand. Once the cores were milled, I went ahead and made a 2-part silicone mold so they could be cast in resin.<br /><br />Currently, I can't seem to find the foam that was used to make the cores. If anyone has a link to this, please let me know! <br /><br />You can also directly support the channel through these links:<br /><br />Support me on Patreon:<br /><a href="https://www.patreon.com/makeitwithcalvin" target="_blank" rel="nofollow">https://www.patreon.com/makeitwithcalvin</a><br /><br />Amazon Affiliates: <br /><a href="https://amzn.to/2qeWN3l" target="_blank" rel="nofollow">https://amzn.to/2qeWN3l</a><br /><br />Check out my Shapeways store here: <a href="https://www.shapeways.com/shops/calvin" target="_blank" rel="nofollow">https://www.shapeways.com/shops/calvin</a>'screations<br /><br />Check out my Etsy here: <a href="https://calvinwitt.etsy.com" target="_blank" rel="nofollow">https://calvinwitt.etsy.com</a><br /><br />Donate to the channel directly here: <a href="https://www.paypal.me/MakeItWithCalvin" target="_blank" rel="nofollow">https://www.paypal.me/MakeItWithCalvin</a><br /><br />Proto-Pasta Affiliate link: <a href="http://www.proto-pasta.com?aff=13" target="_blank" rel="nofollow">http://www.proto-pasta.com?aff=13</a><br /><br />Social media:<br /><br />Twitter: <a href="https://twitter.com/MakeItWithCal" target="_blank" rel="nofollow">https://twitter.com/MakeItWithCal</a><br /><br />Facebook: <a href="https://www.facebook.com/MakeItWithCalvin/" target="_blank" rel="nofollow">https://www.facebook.com/MakeItWithCalvin/</a><br /><br />Instagram: <a href="https://www.instagram.com/makeitwithcalvin/" target="_blank" rel="nofollow">https://www.instagram.com/makeitwithcalvin/</a><br /><br />Check out my models:<br /><br />Thingiverse: <a href="https://www.thingiverse.com/MakeItWithCalvin" target="_blank" rel="nofollow">https://www.thingiverse.com/MakeItWithCalvin</a><br /><br />Pinshape: <a href="https://pinshape.com/users/106868-make-it-with-calvin" target="_blank" rel="nofollow">https://pinshape.com/users/106868-make-it-with-calvin</a><br />...<br /><a href="https://www.youtube.com/watch?v=rZ9zvhaAMGc" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=rZ9zvhaAMGc</a>