ednisley
September 1, 2025, 10:44am
6
Which means there’s still some mechanical looseness to be found.
Assuming those pictures are oriented the way they were made, then the machine has a millimeter or two of backlash in both the X and Y axes:
The test pattern I linked to has backlash test patterns in the corners. Run that, take a good picture of the results, and show us what’s happening.
Running that same pattern as you find and fix problems in the machinery will let you compare the before-and-after results whenever you change something.
Although the sellers don’t tell you this, part of owning a laser machine is learning how to maintain it. In this case, you must train your fingers to feel a tiny looseness, which takes practice.
Some previous discussions may suggest other places to look and feel for problems:
Found the reason, it was one of the roller wheels.
While disassembling and reassembling the machine, I didn’t really see anything wrong. The pulley wheels and belts looked good, and just a precaution, I switched the pulley from X-axis to Y-axis. But then I noticed something when assembling the laser carriage.
Even though the pulley and belt were not connected, I felt something odd when putting the top rail between the wheels. A little bump roughly every 4cm, and the only thing making contact w…
Hello,
I’m having the following problem my laser is engraving some words in my design like double and when is time to cut the edge in some corners it goes like a s instead of a straight line. How can I fix this issue?
I attach some picture above
[IMG_2643]
[IMG_2644]
To start, I am brand new to this. I have a twotrees TTC 450 pro cnc with the 20w laser. I have lightburn and lasergrbl. I have simply typed a word in arial font and drew a circle to send to the machine. It engraves fine with power and speed settings working good, but the font does not look like arial and the circle is not a smooth circle, it’s kind of flat on the sides? The font does the outline of the letters half right. For instance, a capitol H will have the bottom right part of the letter t…
@Woodcraft Problem solved, thank you so much for the article,
I did a couple of things:
Rechecked the belt tightness and found that when compared to the maintenance video my belts were too tight.
There was a bit of movement in the X axis frame, the M4 screws used to mount the X axis to Y axis are countersink type and over time the hole on the metallic frame has probably got slightly enlarged and it was not holding it firmly even though the screw was fully tight. After replacing it with a…
Hello:
I have a non-linear scale problem when patterning an alignment grid on a waste board.
I am using the newest Light Burn version V1.5.01 with an extended version (400 mm x 800 mm) Ortur Laser Master Pro 2.
On my first grid pattern attempt, I made a 1 in grid pattern in Light Burn. The line width was narrow measuring a 7 mil in line on test burns. I offset the line on both sides, removed the reference line, and filled the offset line to make a 20 mil in line. I set the direction of the fi…
