Home injection molding part 1: Machine tear down and repairs @TeachingTech
Home injection molding part 1: Machine tear down and repairs  @TeachingTech
Uploaded August 2023 | Updated September 2026, 2 weeks ago
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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. In this video, I start the process by cleaning and repairing to get it almost back to working order.

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.

Hopefully the new o-rings work well, but in any case, I’m considering casting some high temp silicone washers so I can push the temperature as necessary.

In part 2, the plan is to machine and mold and create something.

0:00 Introduction
Precious plastics shredder video: youtu.be/NL-k8kJ8yig
3D printing vs injection molding: youtu.be/xW1Ob5uzfF8

1:01 My home injection molder: stores.jacobsbaits.com/injection-press-standard-series-1
Demo video: youtube.com/watch?v=F6HidmU6pQI
Plastisol wiki: en.wikipedia.org/wiki/Plastisol

2:34 Modifications

3:04 Cleaning

3:28 Height adjustment mechanism repair

4:51 Tear down and Valve rod unseizing

9:53 Rewiring the heating element

11:20 Basic testing
PID controller manual: maxwell-fa.com/uploadfile/downloads/User%20manual-Rex%20C100,C400,C700,C900.pdf

12:01 Conclusion

Recycling logo image by Ilmari Karonen: en.wikipedia.org/wiki/File:Recycle001.svg

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Home injection molding part 1: Machine tear down and repairs

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