CoreXY experimentation, testing movement by hand

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Based on the CoreXY concept and ideas from FABtotum to avoid crossing belts, I'm experimenting to see if I can get away with as few mounting-points for belts/pulleys as possible. This video shows that my prototype moves, as well as showing the CoreXY movements. Moving resistance feels very low, even if this is very simply built (no linear rollers/brass bearings, no attention made to precicion...). Next step: moving the parts using the motors :)

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That's actually a really good way of showing off the principle. The simplest other video tries to explain the equations behind it, and while it's understandable it's... not the best for a tired mind :'). Subscribed just for this.

TuxieBSOD

thank you SO much... been trying to wrap my brain around this concept for about 24 hours and couldn't get it until I saw this.

ericframe

Thanks so much!!! I am building a coreXZ and couldn't understand how it works. Your video is the only one out there that shows it off. THANKS!

juarmistech

I looked for a video like this and yours is the best. Congratulations on the project!

ricardorodrigues

non perpendicular belt can cause distance error (manhattan vs euclidean), that's why the original CoreXY design uses 2 pulleys

yongliangqin

Looks like you've got a 3D Etch-A-Sketch.

DavidSchneiderPlus

Great demonstration of how corexy works.

adriancollins

I wonder how fast creep sets into those bands?

vadapallichaitu

Hola es posible realizar un impresora 3d XY con una shield V4?

jahhjahhjahh

Nice use of extrusions. Make sure the top-ends of the rods where the pulleys are on, are also supported. The belts need to be tight to ensure stable movement, your pulley-pins will bend out of the printed parts. Just finished my own CoreXYL(aser)

MarinusMakesStuff