Rotary Axis as "Z Axis" / lift table- Galvo Fiber

Hello, is there a function in Lightburn like
" rotate the rotary for xxx steps after every finished Layer "

I could build something to connect a little Z-Lift Table to the machines Rotary.

When i do 3D Coin Engravings then i could set that the rotary moves for lets say 200 steps and this moves my z axis lift table 0.01 mm higher.
So my coin is always in focus.

I think this would be very simple to implement in the Lightburn software.

EXAMPLE

The problem I see with your concept is that the beams between the face of the lens and the work piece are not parallel with each other (and the lens axis) across the field of the lens. Changing the Z distance to maintain focus may significantly alter the size and location of the engraving.

If you have a lens with a working area such that the beam spead is near enough to parallel and the workpiece is aligned with the lens axis, perhaps it could work.

(I haven’t done the math, but this is what came to mind while I was musing the possibility of a moving Z to maintain focus on deep engraves with very shallow depth of field.)

@ClayJar
When i build something like shown above,
i definitly have to use linear rails to maintain as much accuracy as possible.

I think then there is no problem with allignment while the job is running.

My license is not for galvo and I am with 1.4.05 version.
But I find this settings (available only if you have “Z Axis” enabled on the “Device settings” window) on “Cut Settings” window I think they suits your needs if combined with several sub layers or in each single different layer.

@Kuth thanks for your answer. But the „Z-Axis“ Option is not aviable in the Galvo Version.

You’re welcome.
Form my low knowledge of “galvo” I assume i was possible that Z-axis was not an option.
Just trying to help. :+1: :wink:

You could do the same thing with a motorized Z and repeat marking. I don’t think focus or shifting would be an issue because you are moving the coin to the same place the surface was in the first place. Problem I see is wobbly / poorly constructed lift table, but if you built one specifically for the purpose should be good. Other problem to overcome is exactly how far to move it each time, and it would be the same amount each step.

It would be much less costly and time consuming to purchase a longer lens…

:smile_cat:

Hmm, a simple solution to doing deep etching. Interesting idea. I’d love to see it work. This should be doable. You’ll want a rock-solid Z though. Linear rails.

2 Likes

@Colin Lightburn could simple add a Funktion like „run Script After every finished layer“ so you could Programm the Rotary and its steps by yourself. If i do a 3D engraving with 256 Layers, the Rotary would do 256 Little Little steps.