Here is a link to my most recent fix (including the stl files) which are much stronger and closer to how batch 4 and greater are made. However, This fix requires shortening the hoop sections because the arms are shorter.
Paul said batch 4 would have the new arm design but as far as I know they haven’t shipped batch 4 yet and I doubt you could order them till they do. You shouldn’t need the new arms if you use my connector design and a set of 4 arms is quite pricey. However, if you want a modification that is as strong as the batch 4 arm I created yet another design. It requires the hoop pieces to be trimmed a little because the arms are trimmed a little shorter:
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Here are the files:
Hoop …
The stl files for the design that doesn’t require shortening the arms are here:
Important! Sorry guys but there is design flaw with my design created by the intended print orientation. I was hoping if I printed them solid that the layer adhesion would be strong enough but while removing the hoop I broke a tip (I leveraged on the tip too much with the hoop). It split through the layer lines like wood splits with the grain.
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As a solution to prevent the others from breaking I installed a 1-5/8 inch long grabber screw.
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I just pre-drilled and countersunk…
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