A10M A20M silicon sock (thick walls, screw assembly) - casting mold

thingiverse

This mold features an effortless print and easy casting setup, thanks to its M4 screw design. The screw ensures a secure press-fit for all casting die parts, while also providing sufficient leverage to remove the insert and hold it in place as you take off the silicone sock. To prevent air bubbles from forming inside the sock, the insert and lid come equipped with strategically placed air holes. Additionally, the silicone sock is designed to provide extra insulation between the heater cartridge and thermistor wiring, a crucial safety feature that prevents short circuits, which can damage your mainboard if not handled properly. To ensure a successful casting process, you'll need to add a few extra parts: M4x8-10 screws to secure the lid to the insert. It's also essential to apply anti-adhesive spray to the mold before casting the silicone. I recommend using baking spray like PAM for optimal results. When it comes to choosing a temperature-resistant silicone, you have several options. I personally use "TFC Dubliersilikon S-ROT mittelhart Shore 33 1 1 HB," but other suitable alternatives include Mold Max™ 60 Silicone. For casting, you'll need approximately 10-15ml of silicone, as shown in the accompanying picture. To eliminate air bubbles and ensure a smooth casting process, I recommend using an ultrasonic cleaning bath to shake the air bubbles to the surface. Alternatively, you can attach an ultrasonic toothbrush to the mold using tape and gently vibrate it to remove any remaining air pockets.