Fill operations are shifted from Line cuts

[ednisley]

@zachrabbit15

noticed all the fill operations were shifted roughly .1" off from the Line cutting operations

This may be another instance of the PWM Rising Edge Valid misconfiguration that tends to appear only on complex layouts:

Fixing Skewed Engraving - Configuring a Ruida Controller - LightBurn User Guide

Previous discussions:

Image shifting and bunching up but cut out is OK

Red-Black 90w Laser Ruida controller engrave 400mm/s 25% Fill 450mm/s 20% Cut 25mm/s 65% Birch ply held down pins belts are tight so are stepper motors When doing a engrave/fill and cut I get the fill shift while the engrave bunches up, cut out in just fine. This is repeatable, and all come out the same, like it was meant to be, how do I attach image?

Intricate cuts shift gradually, but simple shapes are perfectly accurate

Hi everyone, I’m struggling with a strange alignment issue on my CO₂ laser with Ruida controller and LightBurn. Problem: On intricate layered mandalas / decorative cuts, each layer ends up slightly offset (typically around 1–2 mm). The strange part is that the offset often appears in roughly the same direction and distance, almost like it is systematic. What I have tested so far: Simple shapes (triangles/rectangles) cut perfectly, even at high speed Step calibration is spot on in both …

X axis drift apparent at higher speeds

I have a project with both cutting and engraving. The cutting is 10mm/sec. I have some line engraving at 20mm/sec, but I have letter engraving at higher speeds (see below). Because the inside of the letters falls out at 20mm/sec 10% power, I’ve been trying higher speeds. Examples of inside are for letters R, A, B, 8, i.e. the part of the letter completely enclosed by the engrave line is falling out. I’m measuring error as the X offset from the top point of an “A” to a line that should be vertic…

@JimNM

using the overscan option

Remember: Ruida controllers handle the overscan internally, so LightBurn has no control over it.