Evenly spray release agent (release oil) on the mold surface.
Assemble the mold according to the exploded view.
<img src="https://vzyklpazwxemgkrpkblc.supabase.co/storage/v1/object/public/mold-images/1756639753684-k2qn4v.png" alt="Button Keycap" width="400" />Add an appropriate amount of PVC stock solution and PVC special color paste into the injection machine, set to 170℃, and start heating.
After heating is completed, use the injection machine to inject material into the mold's injection port (push the plunger until it cannot be pushed further and hold for 3-5 seconds to remove larger bubbles).
After injection, wait 6-8 minutes to allow the PVC soft gel to cool.
Once cooled, first pull out each core pin and open the mold, then demold. During demolding, slowly separate the soft gel from the mold to avoid damaging the model by excessive force.
Remove flash and excess soft gel formed at the vent and injection port.
Using quick-drying PVC softgel glue, bond the soft part with the 3D-printed part according to the illustration. Wait for 10–15 seconds for curing to complete, and you will obtain the finished product.
