Remix Easy-Print Helical Gears Cup with Expandable Round Bases
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Update : If you print anything other than PLA, there is a chance of failing in the spirals. To further improve this, the cup now has 3 rings inside to reduce failure. I also added a 3 way middle cup in case you want to build a 2x2 or more complex system ---------- I thought the spinning Helical Gears Cup was a great idea, and so was the expandable base remix, but I found that the original cups were difficult to print as the print seems to fail near the top due to movement in the helix spirals which could flex too much during the print. I decided to add an inner ring near the middle like the top one and stability improved which made it much easier to print. So far no print has failed. Note all can be printed with no support. You might as well use 0.3mm height to speed up printing it won't make much difference in quality but everything prints faster. Use 20-50% infill if you use 3 walls (1.2mm) and it should be ok for most non load-bearing use.
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