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Injection Molding Silicone Components For Below $50

You’ve possible seen many tutorials on making silicone components utilizing 3D printed molds on-line. The overwhelming majority of those strategies use a easy pour technique to fill the mildew. This depends on cautious degassing and mild pouring to cut back the presence of bubbles within the last end result. [Jan Mrázek] has been engaged on another technique nonetheless, that allows for injection molding at low cost in the home shop.

The method depends on using printed resin molds. [Jan] notes that this usually necessitates using condensation-cure silicones, as additive sorts don’t remedy effectively in resin molds. The condensation silicone is blended up, degassed, and poured into a typical cartridge. From there, it’s put in in a silicone supply air gun, which makes use of compressed air to power the silicone out of the nozzle and into the ready mildew.

It’s principally utilizing a bunch of house DIY gear to create an affordable injection molding answer for silicone components. [Jan] notes that there are a number of mods wanted to mildew design to swimsuit the method, and that 400-800 kPa is an effective stress to inject the silicone at.

Having the silicone injected beneath stress is nice for advanced mildew designs, because it forces the fabric into all of the little troublesome nooks and crannies. In fact, we’ve seen other methods for making silicone parts before, too. Be sure you pontificate within the feedback with your personal favored methods for producing high quality silicone components. Video after the break.

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