3 ms·
I don't understand the decision not to use CoreXY. I have a very very similar plotter that also cost me next to nothing using essentially the same BoM as this.
by errantspark 7y ago
I don't understand the decision not to use CoreXY. I have a very very similar plotter that also cost me next to nothing using essentially the same BoM as this. It's directly descended from this one [0]. It can absolutely fly, I've spent some time tweaking it but I can reliably and accurately drive it at something like 20cm/s. That's largely a factor of the low inertia of the CoreXY design, which keeps both the main steppers stationary during operation.
Anyway, plotters are dope and to anyone thinking of building one of these, I highly recommend a CoreXY based design.
[0] https://www.thingiverse.com/thing:1514145 https://www.thingiverse.com/thing:1514145
- edge17 7y agoNot sure if this is a dumb question, but what is CoreXY?
- grzm 7y agohttps://corexy.com https://corexy.com
- microcolonel 7y agoCoreXY is interesting, and seems especially well suited to plotters, where you don't need to worry generally about the speed of the tool. I've seen CoreXY machines doing circles at two or three linear meters per second (!) with print heads on them, I can only imagine how fast a light pen plotting head could go. Is there a reason why people aren't using thin cables or wires instead of belts at this point? If you used wires you could have a simpler crossover, I think (wouldn't need the extra pulleys); this could also reduce belt inertia, if that's of any importance.