3 ms·

Tangentially related: https://openflexure.org/ https://openflexure.org/

• amelius 2y ago
  Very cool, but I wonder how far you get with something like this: https://nl.aliexpress.com/item/1005004262524839.html https://nl.aliexpress.com/item/1005004262524839.html
  • dekhn 2y ago
    It's not motorized and motorizing that type of stand is painful (there is at least one paper that shows it's possible; I tried it and the results were not great: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0088977 https://journals.plos.org/plosone/article?id=10.1371/journal...)
    • amelius 2y ago
      What was the biggest challenge? I suppose you get some unpredictable backlash in that flexible shaft.
      • dekhn 2y ago
        Yeah the flexible shafts were terrible. I'd get highly variable movement even when making movements in only one direction (IE, home to Y 0, then only move positive ). They were so bad I tried to find ways to mount the steppers directly on each axis, which means the Y stepper is hanging out in air putting a lot of weight directly on the Y stage. Instead, i switched to cloning stages like this: https://www.asiimaging.com/products/stages/xy-inverted-stages/ms-2000-xyz-automated-stage/ https://www.asiimaging.com/products/stages/xy-inverted-stage... but I used off-the-shelf (well, amazon) linear rails, off-the-shelf (stepperonline) steppers, and 3d printed (or machined aluminum) frames. Works much better.