Proper use of rotary chuck when object diameter is longer than bed

[kirk-ap (Kirk H)]

Hello,
We have a Boss LS 1630 and we are using the Piburn rotary attachment to try and engrave dog bowls. I have been able to use the roller to engrave cups just fine but I have tried to use the chuck for the dog bowls which are much wider in diameter. Rotary mode is turned on, steps are set, and the proper diameter and circumference of the object are set. The issue I am having is the image is being cut off because the diameter of the bowl is much larger than the length of the Y axis of the bed. When I frame the image, it stops at a certain point and I know it has reached the limit because I see the Y value on the machine at its max point (400 mm). I tried creating a new machine with a bed much larger in the Y (900 mm) but the machine still stops at its known limit of 400 mm. I am looking for help with the proper way to engrave any item when its diameter is larger than Y length of the bed. Any help with this is appreciated! Thank you

[thelmuth (Tim Helmuth)]

Not suire if this will work, but on my Omtech, If I reset the machine with the rotary attached and hit esc a couple times after it attempts to home it gives a bed dimension of 10,000x10,000 because it didn’t home properly. Try running it from there.

[kirk-ap (Kirk H)]

Unfortunately that didn’t work for us…still trying to figure this one out

[jkwilborn (Jack Wilborn)]

@kirk-ap

I tried creating a new machine with a bed much larger in the Y (900 mm) but the machine still stops at its known limit of 400 mm

It has no known limit … except what it’s told.

These values are set by the device configuration. If it’s still stopping at 400mm, then you didn’t modify the work area size as you thought.

It’s going to count from where it thinks home is, so interrupting it’s home operation might buy you some space.

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I don’t know if this will help, but have you tried to disable this?

[thelmuth (Tim Helmuth)]

@kirk-ap

I tried creating a new machine with a bed much larger in the Y (900 mm) but the machine still stops at its known limit of 400 mm.

You need to go into Machine settings to change what the machine knows. Changing it in Device settings only changes your work area in Lightburn and does not write anything to the machine.You will need to scroll to the bottom and click Vendor Settings which will pop up a warning. Click through it. Backup your current settings BEFORE making any changes.