40mm Coin CNC Vacuum Pod - Universal Fit CNC Workholding For Coins
Easy to print, and designed for repeatable accuracy, this pod is a simple but powerful upgrade for CNC coin projects.
Please read full description! PLEASE DO NOT MODIFY MY PROFILE AS I PUT IN ADDITIONAL MODIFIERS FOR STRENGHTH
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This 3D-printed vacuum pod is designed to securely hold 40 mm coins and medallions during CNC machining. By using vacuum pressure instead of mechanical clamps, the pod keeps your coin flat and stable, reducing vibration and improving engraving, relief carving, and finishing accuracy. Great for custom coins, challenge coins, and precision milling projects.
Video Of Pod in Use:
Requirements:
Minimum 3.5 CFM vacuum pump (works well — I cannot guarantee performance with a lower CFM pump)
Additional hardware:
Rubber O-Ring Sealing Gasket (37 mm OD / 32 mm ID – 2.5 mm width – exact size required)
PC6-01 Push-to-Fit Pneumatic Connector
Teflon Tape
6 mm OD Pneumatic Hose
Accepts up to M6 Screws (I use M5 for my Carvera CNC)
Assembly Notes:
The pneumatic fitting self-threads directly into the pod. Use caution on first install—do not overtighten, as this may crack the pod.
For initial threading, I used a drill with a 5 mm hex bit (3/16" works as well) to cut about 75% of the threads, then finished by hand with a matching Allen key.
Once the initial threading is done, remove the fitting, wrap with Teflon tape, and reinstall by hand—again, without overtightening.
The O-ring must be exact at 37 mm OD / 32 mm ID – 2.5 mm width to ensure an airtight seal.
If you print this model and benefit from it please consider leaving a positive rating and boosting the model.
Thanks for looking and I hope this help you as they did for me.
Happy milling.
If you download and use please like/boost this model and upload a make picture.
Boost MeHi there! If you have a spare boost, I’d be so grateful for your support. While bigger creators often get lots of attention, boosting smaller creators like me truly makes a big difference. Your boost would help me keep sharing unique, niche models for everyone to enjoy. Thank you so much for considering it—it means the world! 🙏💖
GabrielMaker
