I’m trying to slow down the rotary speed when using Lightburn with the xTool D1 10W Laser. The cups are jumping a bit because the startup and slow down speeds are too fast. Things I have read about and tried so far:
Go to the machine settings and lower the Idle Speed. However, I do not see an idle speed under machine settings. I assume this is because the page I found was for a different laser cutter.
I do see an options for Z Max Rate and Z Acceleration which seem like the right values for me to be editing. However, if I try to modify these and write them to the controller, they do not take. The status says it wrote setting successfully, but when reading the values back from the controller, they show as reset back to their original values.
Attached are the relevant setting pages that might be helpful here.
Some of these machines won’t let you modify them and some will let you, but restore the original when you reset or reboot the controller. I think most people try and find a standard grbl firmware replacement.
I don’t know if yours is one of them.
Hopefully they will see you…
I have a rotary for my 50 watt co2, I have to lower all of the acceleration and take off speed to accommodate some mugs and cups.
If you are vector cutting it will all have to be slowed down as the object tends to slip. Most of the best seems to come from scan engraving and slowing rotating the object line by line. Much less chance of slippage…
Using the official Lightbox software that came with the laser, it rotates at a much slower speed. So I imagine it’s a lightburn causing the rotation speed to so high and not the machine settings. The design tools in Lightbox are just not good enough for me tho, so really want to find a Lightburn solution.
Not sure if it’s still the case but it used to be that rapid moves on the D1 could not be modified in GRBL mode. This caused all sorts of issues but this is the first time I’m hearing about a potential problem with rotary.
LightBurn will determine the actual cut speed but not the rapid speeds.
You could potentially workaround this by making your entire engraving an image including whitespace. This will then follow your image cut settings for speed.
I have not. I am also not convinced it’s a hard-coded hardware value or not a LightBurn specific issue causing the issue. The Lightbox software handles spinning the rotary at a normal speed just fine. Hopefully someone with more knowledge than us sees this and is willing to help.
Run $$ in Console. That will list your max move rates in mm/m. Check for $112 which is the setting for Z.
Then create a simple job with that speed for cut setting. Do you get the same jumping? If so, then it’s a problem with the firmware.
The fact that xTool prohibits EEPROM saves exacerbates the problem.
Keep in mind that there are 2 separate firmware in the D1 controller… one for proprietary xTool which is what Lightbox uses… then GRBL which is what all other controllers would use.
This would not be the first firmware issue for D1… it’s had quite a number since the initial GRBL release.
Michael, did you ever get a fix to this. Im assuming you mean the rotary is too fast in the framing? Is this what you’re referring too? I have the same issue, it spins way too fast when framing, but the actual laser engraving is fine, its just when trying to frame the project for me is when the rotary goes about 90mph…
Yes, I was referring to the speed while framing. I was also worried that during the cut between various sections of fill engraving, the cup would jump and get unaligned. I never found any Lightburn options to change the rotary speed.
The solution for me was physically setting the two wheels on the widest setting on the rotary as well as cutting a ring to place on the back of the cup for stabilization. Lightburn was able to do a fantastic job engraving some powder coated tumblers.
