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Make a custom drink coaster mold with the X-Carve CNC from Inventables

By April 22, 2021July 6th, 2021CNC, DIY, How-To, Start to Finish
Neo7cnc Coaster Mold 1

I recently did some urethane casting to recreate some small bumpers that were no longer commercially available.  The process was new and interesting so I thought that I’d make some custom drink coaster molds using the X-Carve CNC from inventables.  For the first time, I used a tapered endmill. The taper of the endmill naturally creates a relief angle to the mold, making coaster removal easier once the urethane has cured.  I made several different designs.  The Fusion 360 design file links are below as well as links to other items used in the project.  Thanks to Inventables for sponsoring my creative adventures!


Affiliate links to the items used in this project: (Thanks for your support!)

X-Carve CNC Machine –​

Easel Design Software –

Vacuum pump –

Vacuum chamber –

Silpak Urethane – I used RU-385 –

Tapered Endmill –

Designs created using Fusion360 CAD/CAM software

Bubble coaster mold –

Curve coaster mold –

Help support the channel: – PayPal

David Burrell

David Burrell - A lifelong inventor, designer and creator. Besides being a CNC enthusiast and maker, he also invented the LoopAlien and patented QuickIT cord attachment devices that were successfully launched on Kickstarter.