Thinking of a rectangular coreXY
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I have a few nice linear rails and a spare Duet 3 board. Of course, that means that I have to make a new coreXY printer to complement my Prusa Mk4 and Duet-powered Voron 0.
The rails are long 15mm THK with a light preload, and a couple of short 9mm THK. All are second hand but only lightly used.
It seems to me that I have enough rail to make a printer with about 150mm x-axis travel and 250mm y-axis travel. Are there any problems or gotchas associated with a non-square printer?
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@MJLew should not be an issue.
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@MJLew The CoreXY geometry only has one rule to follow: The belt path's have to be square and parallel with the rails.
I always started to design a printer from inside-out. Starting with the bed heater-size.
Nowadays, you can order silikon-heater mats in almost any size if you are willing to wait for it. But in early days, there were only a few PCB-style bed heaters available.In case of your rails, the build volume is pretty small. (like 100 x 200?)
If I was in your shoes, I'd look for longer rails. The affort to design and build a bigger printer is almost the same. -
@o_lampe Thank you for the good design advice.
Yes, I expect to end up with a fairly small build volume, and in some ways you are right in suggesting that I build it larger. However, the space available in my shed is quite small and I would like the new printer to be not much wider than the Voron 0 that it will replace.
I have found the even smaller volume of the Voron 0 to be sufficient for almost all of my printing for years now, and I will still have the Prusa for larger objects.
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CoreXY has no "knowledge" of X and Y being equal.
My example: I have 2 Core XYs. The small one had a bed 150 x 200.
Recently I heavily tweaked everything on the X axis and now have a print capability of 170 x 210, with enhanced rigidity (ie less deflection than the 150mm) along the X-axis. Ideal for off-the-shelf magnetic print beds of 180 x 180.
