• Mold Fabrication: 3D Printing, PETG, about 460g, about 19h
• Injection Materials: HARD
• Mold Fabrication: 3D Printing, PETG, about 460g, about 19h
• Injection Materials: HARD
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Released 8/30/2025
Description
RC Wheels Injection Molding Instructions
FDM Slicing Settings
Material: PETG/PC
Nozzle Diameter: 0.4 mm
Wall Thickness: 8 layers (≈3.2 mm, high compressive strength, resistant to multiple injections)
Top Layer Thickness: 3 mm
Bottom Layer Thickness: 2 mm
Infill Density: 25% (balance between strength and material saving)
Infill Pattern: Recommended Grid
Layer Height: 0.2 mm
Preparation Materials
0-hardness PVC stock solution
PVC special color paste (yellow, milky white)
Release agent (recommended: PTFE-based release agent; edible oil can also be used, but the release effect is not as good)
Fast-drying PVC soft glue adhesive
3D printed mold
SALTGATOR injection molding machine
Injection Molding Steps
Evenly spray release agent (release oil) onto the mold surface.
Assemble the mold according to the exploded view below.
<img src="https://vzyklpazwxemgkrpkblc.supabase.co/storage/v1/object/public/mold-images/1756638763940-jkk5vn.png" alt="RC Wheels " width="400" />
Add an appropriate amount of PVC stock solution and PVC special color paste into the injection machine, set the temperature to 170℃, and start heating.
After heating is complete, use the injection machine to inject the material into the mold's injection port (push the plunger until it cannot be pushed further, then hold for 3-5 seconds to remove larger bubbles).
After injection, wait for 6-8 minutes to allow the PVC softgel to cool down.
Once cooled, first pull out each core pin and open the mold, then demold. During demolding, slowly separate the softgel from the mold to avoid damaging the product with excessive force.
Remove burrs and any excess softgel produced at the exhaust port and injection port.
