Tusy B1 10W laser Y axis issue

My laser had been working fine. I decided to create a waste board. When it was finished I noticed the Y axis did not seem to be working correctly. I had made some 4" by 4" squares and when it was done, the squares were 4" by 3.25" I checked all the connections, drive belts and rollers and all seem to be in good working order. I manually homed and did get position and it is showing 0:0. When I move laser to center position of 205:205 it moves to the correct position. Just when I am trying to cut or engrave, the dimensions on the screen to do match the output. I have removed and reinstalled the machine as well. I am running the latest version of lightburn.

any chance you toggled Rotary mode?

I will check. I did test out my rotary tool the other day and this is the first time I engraved something that the measurement mattered.

odds are Rotary is on
Settings you can set a “add rotary to Laser panel” settings (word to effect) easier to find

Rotary was not checked. I uninstalled Lightburn and reinstalled and still no luck. I manually move to points and then I measure. Y is only moving 3.68". But when I move to 0:0 it moves to the home position and hits the limit switches. I am going in install LaserGRBL tomorrow and see if it moves the correct distance

if you type
$$ in console
press enter
COpy/paste the whole output

Did you use the Calibrate Axis tool?

The only other thing that comes to mind is. assuming your miss is on Y, your X belts not being fully tightened, therefore your 0.75" is being lost in tensioning. SEems TOO much though if i am honest
Dot Test with Angle.lbrn (46.3 KB)
Try running this in cardboard
and post apicture, might give clues

I have not done the calibrate axis tool. Not sure how to do that.I will do the $$ in console and post in the morning. I am in for the night.

I will try the test in the morning. First thing I did was checked belts and rollers for tension. They seem to be good.

$$

$0=10

$1=25

$2=0

$3=0

$4=0

$5=1

$6=0

$10=1

$11=0.010

$12=0.002

$13=0

$20=1

$21=0

$22=1

$23=3

$24=200.000

$25=2000.000

$26=250.000

$27=3.000

$30=1000.000

$31=0.000

$32=1

$37=1

$38=1

$39=1

$40=200

$41=40

$42=300

$43=5

$44=1

$100=80.000

$101=65.000

$102=250.000

$103=100.000

$104=100.000

$105=100.000

$110=9000.000

$111=9000.000

$112=1000.000

$113=1000.000

$114=1000.000

$115=1000.000

$120=500.000

$121=500.000

$122=10.000

$123=200.000

$124=200.000

$125=200.000

$130=410.000

$131=410.000

$132=200.000

$133=300.000

$134=300.000

$135=300.000

ok

problem might be here
X steps per min 80 (is normal)
Y steps per min 65 (not normal

Do in console
$101=80
press enter
Once done try the box again

Works perfectly now. Will it stay that way or will I have to adjust each time?

Try 2 things
$RST=*
press enter
$$
press enter
Scroll to 101 zone, is it still 65?
If so, this is a firmware bug and you could - should - inform company so they patch it

Then $101=80
Press enter

It will persisnt as long as you dont reset ($RST=*)

Thanks. I shut down light burn and PC and then restarted. $101 was still at 80 so I should be good. I will validate after each start up to ensure and if not I will reach out to company. Thanks for all you help.

maybe i explaned wrong
If you $RST=*
then check again you can see if the defaults of company firmware are wrong
If they are NOT then means something changed but now is fixed

if you dont want to do this, you dont need to validate it on each startup, unless you change somehting it should persist forever until reset or firmware update

I understand now. Thanks

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