Tealight holders, first prototypes
I finally managed to make a mold for something somewhat useful; tealight holders. My small injection machine is reaching the limit with the volume of plastic needed to fill the mold, and the sharp corners creates a lot of pressure, but it works.
Yes the rough edges is due to the plastic not reaching the very end, however i have not concluded yet why this is happening. There should be enough plastic in the patron to fill it out, air-holes are in place to avoid vacuum. I’m afraid that my gearing, patron and manual power can’t supply enough pressure to fill it out fast enough and it cools too fast – but i’m not yet sure. The machine is designed to shoot 20 grams.
I have also been told that sharp corners are very bad, and this design has very sharp corner very early in the flow.
I will continue on this a bit more, but soon i will design something much smaller more suitable for my machine, just to make it easier to ‘mass produce’ something useful for the mainstream.
Heres some more pictures.
one from (almost) clear PP
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