Hi, I think I had the opposite problem of this last time. Last time it looked like it was skipping lines, now it looks like they are doubling up. I changed the belts and the places left blank seemed to disappear and now it looks like every say 50 passes they are doubling up, see my first pic. Anyone have any experience with this? I changed some of the values you will see because I purchased the Z-axis extension and followed the instructions on a previous post but this was a long while back and should have nothing to do with this I would think, then again, I did have to reflash the firmware a bit back so I had to reset a bunch of values and this might have been doing it since then, not sure.
IMHO it’s the texture of the wood. Unless I’m not seeing what you’re looking at…
Anywhere there is a grain change, the laser does different amount of damage. I can see the patterns…
The ‘Device Settings’ additional settings tab, is only used in the ‘preview’ to emulate the machine operations.
Generally the cut layer and the ‘basic settings’ are viewed to ensure there is nothing obvious. You can also ‘drop’ the .lbrn2 file on the reply window and it will upload it… Wait for the upload to complete
Thanks for the response Jack! I don’t believe it is the texture it seems to be doing it at the exact same position every so often. If you look at the new view I’m including, the red checks show the position where it seems to start the cycle. The blue is the grain which I believe you are thinking. Yes for sure I will upload those as well when I get home. Thanks again!
I have a feeling that this is just a timing value I need to mess with. Can anyone suggest a couple settings I can try playing with? I’ve tried searching every key phrase I can think of and I’m coming up short.
I think what you’re seeing is curtaining. It may not be that straightforward to resolve. When you replaced the belts did you get a like for like belt or did you get one with a different tooth pitch? Were the teeth a different profile than the ones you replaced?
Does the effect change with speed or acceleration? Is the effect worse/better with Constant Power setting on in the cut layer?
Hi, the belts are straight 1:1, they’ve been working fine since. I think I might have actually found something related though, I just don’t know where to go with it. I tried printing something else and found that it was burning way further down than it was supposed to be. I drew a box and measured and my X dimensions were correct but my Y axis dimensions were out by almost 6mm (350mm total). Is there some type of scale for each axis that can be changed? I also tried constant power on (blue) vs off (red), see the pic, much darker but same end result
It’s likely that the tooth pitch was just slightly different than what you had before. Good practice to always at least test calibration after any mechanical operation.
So did this also address the banding issue or just the calibration?
