Exploring alternatives layout for QR.

3D Printing
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1

Exploring alternatives layout for QR. Difficult to make it better than the already excellent original one, but keep trying.
Findings so far:

  1. Vertical beam inside and semi-open carriage allow to free one side of the 20x20 extrusion for fixing Z leadscrew;
  2. Possibility to get rid of on wheel, but have to come up with alternative way to stretch Dyneema (Eccentric? Slotted stepper bracket? Screws on carriage);
  3. An L-shaped or even Y-shaped plate would allow to fix both stepper motor and idler in ideal position;

Let me know your thoughts…

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f8756761374a01b52be146ce54694451.jpeg4128×3096 1.18 MB

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4c5db9a0fbad0e8fe362f8905bc26ba0.jpeg4128×3096 1010 KB

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83ccfc4fc40203d7567f2355e4cfe310.jpeg4128×3096 1.48 MB

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d2276a7cc55f3ae10954324c05dc6597.jpeg4128×3096 1.17 MB

2

I’d like to find a way to easily separate the carriage/wheels from the carriage/dyneema holder/cross beam holder in order to check on clearance easily.
Having always the tension of the dyneema on the system makes it difficult to sense if anything is wrong.

3

Why do you consider it expensive? Due to the springs? Or is it the time you need to build them?