I have a Jtech 4.2 laser and I noticed today that the Y axis is cutting with more power than the X axis. It takes 1 pass to cut through on the Y axis but two passes on the X axis. I’m sure it’s a setting issue but I can’t find it. Thanks for any help or guidance.
what kind of material? wood? plywood? and thickness?
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Actually it was a sheet of paper. Going to cut out some cardstock.
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And suddenly an a axis cut more than the other?
If your laser is a diode laser I would say it is because of the beam geometry. This is normally a square and not a perfect circle. You can see this when you’re fare out of focus (~1m or so)
If you can easy remove the laser module and point it to a wall (do not forget to put on the laser glasses 
) you see the beam geometry.
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you didn’t say much about your laser other than who makes it but as M1000 stated, if it is a diode laser and of lowish pricing then the “dot” is really an oval and because these burn based on energy density, there is more power being put into the material along the largest axis of the oval than the shorter axis. a dot shapped like this, " | ", will have the energy spread out moving left/right while in the up/down direction the energy is distributed along a narrower path and therefore more goes heat/energy into the material.
Google around for “3 element laser lens” and you’ll find many articles on this. BTW, the higher power you go the worst the dot shape becomes. 7W better than 15W better than 20W etc. My 15W Ortur has a better dot shape with a 3 element G7 lens than it did with the stock G2 or even a G8 lens.
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Maybe just the video will work
You should be able to look up ortur lens on amazon. Should have them for sale.
Lots of people like to switch to the G8 so there are lots of conversations about this when you search on: “laser diode lens change G8”
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I don’t have an Ortur, but the lenses unscrew and you can swap out for better lenses with different focal points.
If that is who you purchased your machine from then that is a good start. These lens replacements are not ‘one size fits all’ so either you find some posts from people who have your same machine or you try to figure out the details like what thread diamter your lens is, what’s the thread pitch, what is your current focal length, what focal length you are looking for or willing to accept, will the lens stay in place, etc etc. I found lens costs for my Ortur LM1 were around $10-$20 on ebay.
The shape of the laser diode “dot” is pretty well documented across the web. I had found a youtube video which shows the diode substrate excitation which causes this oval dot but can’d find it in my history any longer.
CO2 lasers do not have this effect.
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