I worry a bit about the heat break fan or its cable failing. Ideally, printing would then stop. How do you deal with this scenario? Just accept the risk? Or is there a standard way to detect and deal with such a failure? (not sure whether this is the right forum, but I use a Duet 2)by build3r - Duet
Thanks for your detailed answer, that clarifies a lot. Quotethe_digital_dentist Yes, two linear guides for the Z axis. No, no alignment or thermal problems. The linear guides are bolted to t-slot that is bolted to the printer's frame. There is a t-slot cross bar at the bottom and the bed support is also a t-slot that runs across the two Z guides. I was concerned that with the chamber being heateby build3r - CoreXY Machines
Recently, I have been studying CoreXY builds. My longer term goal is to build one, and while it is clear to me that this will include some trial and error, I hope to learn as much as possible from others. Right now, I don't have the time to start and thus keep reading and thinking ;-) Reading through digital dentist's blogspot pages, in particular the ones about the "UMMD" printer, I wondered abby build3r - CoreXY Machines
Thanks, this is more or less what I had thought about. I think I will use some sort of rail on one side to prevent the wobble between the axis, and a PTFE or POM guide as you used it with the sand table. I am not so much concerned about absolute positioning accuracy, but more about repeatability (for example, when plotting a circle, start and end point should be as close as possible).by build3r - CoreXY Machines
QuoteStlLooking I don't understand the question. What do you mean by "floating?" All four end-points of the belts are fixed to the carriage so I cannot see where "floating" might come in. Well, unless the carriage is made of TPU! :-) With "floating" I meant with no fixed connection of the X axis to the two Y rails. Specifically, I thought on running it on wheels (vertical ones that run either oby build3r - CoreXY Machines
Quotethe_digital_dentist Have you ever used or built a 3D printer before? As a first project a 1m x 1m machine is extremely ambitious. Dual use as a laser cutter adds another level of complication. Thanks for your thoughts and the warning. Yes, I have a 3D printer I built from a kit. What I actually want to build is not a 3D printer, but a plotter (with a pen) that can also cut paper or thinby build3r - CoreXY Machines
As a first project, I would like to build a large (1m x 1m) plotter / laser cutter. The idea is to get familiar with all kind of topics before I begin my build of a 3D printer. Also, I have some actual use for this device. Now to the coreXY mechanism: It seems to me that the belts keeps X and Y axis orthogonal (given that the pulleys are at the right place and firmly anchored). My question: Isby build3r - CoreXY Machines