Uploaded August 2023 | Updated September 2026, 2 weeks ago

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Check out my 2nd channel, TT Racing: youtube.com/@ttracingYT

It’s time for some home based injection molding. I’ve had this machine since 2014, but it has been sitting idle for a while now, due to an error on my part. Last time, I smashed some stuff to get it unseized. This video is all about mold making. Including 3D printing molds for silicone, and CNC milling aluminium molds for plastic using the Carvera desktop CNC. Not everything went as planned..

Please note that this machine is sold to suit 110V mains voltage. In Australia we use 220V, and I’m pretty sure I removed one heater and converted the other. If you also use 220V, you would need to do the same or use a step down converter.

0:00 Introduction
Part 1: youtu.be/4BRNVmtP7Rs

0:43 Replacement washers / o-rings fail
CNC Kitchen silicone sock video: youtube.com/watch?v=O5UiXky85hA
RTV silicone wiki: en.wikipedia.org/wiki/RTV_silicone
Release agent: https://melbourneartdirect.com.au/product/ease-release-200-aerosol/

6:10 Prepping mold material and cutters
10mm aluminium plate in Aus: https://www.makerstore.com.au/product/mat-al/

7:14 Target object

8:05 Designing the mold

9:39 CAM
Kiri:Moto: https://grid.space/kiri/

10:44 Machining and inspecting the mold
Purchase the Carvera CNC (affiliate): bit.ly/3CVfsq3 Use code 'TeachingTech' for a small discount.

12:04 Diagnosing the problem

13:30 Post processing the mold

14:49 Conclusion

Buy quality and affordable filament from X3D. Buy 3, get 1 free and a free sample pack with every order: www.x3d.com.au

Get Quality Resins from 3D Printers Online. 5% off storewide for Teaching Tech subscribers [Code: tech5]
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