I seem to have a problem with sizes of shapes. When creating a simple “box” say 50 x 100 mm and locking in that size, the final cut becomes 48 x 98 (approx). The kerf setting is zero. This has only happened recently, I havent made any adjustments to settings etc. Running latest LB ver on Sculpfun s30. Would welcome any advise on fixing this. Cheers Max
Hi @dropbear
Have you recently run a saved file or changed the device profile or machine?
try this.
- open the Console tab on the right side of your window
- Type:
$and press Enter - try to find the values for $100 and $101 these are the steps set for each axis X and Y
$100 = [X axis steps/mm]
$101 = [Y axis steps/mm]
Sculpfun S30 should be about
- $100 = 80.000
- $101 = 80.000
If yours are lower, that would explain the size shrinkage.
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Hi Dominic, Firstly thankyou for help and quick responce.
I have checked the settings and they are all good. There havent been any saved files or profile changes.
We have 2 machines 1 x S30 22w & 1 x S30 33w, have tested the 22w & it is also doing the same as the 33w. This is very anoying to say the least. We also have 2 extra Lightburn Licences not running any machines … any ideas would be appreciated.
Cheers Dropbear Max
ps.. at startup Lightburn is asking me to re enter our licience number as our trial has expired, our licence is up to date and due around October. Could we have a glitch? Thankyou.
Depending on what you’re cutting, a rectangular diode laser spot will cut differently along the two axes. While it’s unusual for the cut width to be 2 mm, something like EVA foam would do that.
As a quick check, set the laser to mark cardboard, draw a 100 mm square, and measure the result with an accurate scale (ideally, digital calipers) between opposite sides, being careful to measure parallel to the other sides of the square. Doing that eliminates the cut width from the problem and gives you the actual motion.
If those answers don’t come out right, then the axes are in need of calibration: