New answers tagged

2

In the world of hobbyist milling machines, a DRO accessory is extremely valuable for improving work flow and accuracy of project builds. The Digital Read Out devices run the gamut from affordable to astonishingly expensive and cover one, two and three axis readouts. For single axis purposes, some hobbyists will simply find a means to attach a digital caliper,...


0

What you ask is probably not easily doable: you want to measure distances with no more than 1 micron error! 1 micron because assuming 2 mm leadscrew pitch and full steps only, you have 100 full steps per mm (10 microns per step). With 10% error at most you need to measure 1 micron. What you can do is avoiding measuring distances and rather measure angles to ...


1

This is classic Layer Shift in the Y plane. This happens in one of three cases: Belt too loose Belt too tight Bed movement hindered The belt should ring and resonate when tapped, giving a nice tune. I haven't really tuned mines, but my ender3 (250 mm bed movement in total) has about a G major. The bed movement should be, with motors off, easy and smooth. ...


0

The pitch no matter the screw is the distance between the threads. The lead can be different based on a one or two start threads.


5

Within the realm of Cartesian machines (eg having orthogonal X, Y, Z axis) consider the sort of design you do see: the Ultimaker-like X-Y stage over a build platform which can drop. The question is then, why drop the build rather than raise the mechanism? Likely the reason is mechanical simplicity. The X-Y gantry is the part that moves around quickly and ...


7

As a frame challenge, they kind of are. It's just that the optimal, and in some sense only reasonable, design for a fixed build platform that doesn't move on any axis is the delta robot geometry. This design is not the most popular, but it's far from obscure - there are lots of cheap entry-level delta printers available as well as higher-end ones. What makes ...


4

Why is this so rare? This is rare because machine designers basically copy the designs that work, without trying to innovate too much. As a result of this, Adrian Bowyer's original RepRap design (a travelling type) is currently the most prominent desktop 3D printer design around. Are there flaws in this design? There aren't any flaws in the concept for a ...


10

Why is this so rare? Such kind of printers usually harder to assembles, calibrate, and maintain because 3 axes machine is a bit more complex than 2 axes. For instance, it's can be tricky to move an entire extruder among all 3 axis and some of such printer's designs may require even dedicated exruder's design like Bowden Extruders. Are there flaws in this ...


Top 50 recent answers are included