Hello I am hoping you can confirm if I am on the right track before I mess with a working machine (kinda)
I have a atomstack A5 that has a a Laser Tree K30 module on it. I have also upgraded the controller to TinyBee running FluidNC.
Because the new module is so powerful I have been having issues finding the right mix of speed and power.
I have been using LA Hobby guys universal test cards and I am starting to notice that even at 6000mm/min & acceleration_mm_per_sec2: is 1000.00 (This is max setting currently) I can’t get any satisfaction but started to get better. from the 5000mm/min test. So more speed or less power is in order.
Correct me if I am wrong:
As far as I understand I would change the X&Y max rate from 6000mm/min to 7000,8000 and so on until the machine stalls or argues. Same for acceleration?
At this point, Would you recommend I just move the max speed and leave the acceleration @ 1000?
Will I see the “Max speed” during jogging or will I need to send a job to laser at the 7000 speed?
The crappy part is messing with the fluidNC I can’t just change $110 in lightburn I need to write the YAML file and send it to the machine.
I realize there will be a point the machine (steppers & belt drive) just won’t be able to supply the speed. But is it possible the machine can move upwards of 9000-10000mm/min? Even if the laser couldn’t keep up? (although this K30 is a beast more power than I expected)
You are forgetting your laser frame, you have to test but likely you´re not getting the speed/acceleration you´re wanting, your laser frame may vibrate and your steppers may loose steps.
Really you have to test your system by upping your machine speeds/acceleration and when you have issues lower the values 10% and try again. The values found are your machine limit.
Yes there is that as well.
I have plans for building a larger frame with linear rails and eventually will become a C02 or RF laser.
But at the moment I need to work with what I have. I just need to speed it up a little bit to see if I am headed right direction. But if the machine is capped out at 6000 in the settings I need to start there.
The grayscale test was to dark in the 5% range at 6000mm/min. The image test look better around 20% power @ 6000mm/min.
I am about to mess the settings. Hopefully I can gain a little bit.
Fine with simple shapes first, images are more difficult.
You can make material tests and then place only 2 squares at 4 corners with the found settings near your laser frame-10cm.
Well you called it!
The machine has a wobbly line at any speed tested between 2500-4200.
This is with the max speed in settings set at 10000 & 1000 acceleration. Same accel. as started.
I was able to get the machine moving around 18000mm/min but obviously that is a bit fast.
I have chased this symptom before and I am 80% sure it is in the front to back wiggle of the laser mount @ the gantry.
I HATE these V wheels and my machine adds more stress to the upper wheels because it uses them as belt idlers as well. The tighter I make the belt the more it pulls the v wheel settings out…
I am going to get rid of the laser wobble once and for all LOL… Of course it is partially due to the larger heads mass.
I just ordered some linear rails and have a Thingiverse file to do the conversion. .
I am not ready to build the larger frame just yet so hopefully the X rail mod is enough. To smooth out the side to side movement.
