Image engraving wavy

[clocey (Curt)]

I am new with LB and after struggling with getting image engraving to work I asked a friend for a LB file that he used that looked great for me to try on my machine. As seen in the photo the image is wavy. I initially thought it was due to belts needing tightening, so I checked them and all are good. I can cut great and the cut and engrave tests work well also. I would appreciate any help with this so I can start engraving coasters.
Here are my parameters
[PRODUCER:MKS DLC32]
[V2.30(8M.H35.20221223)]
[VER:1.1h.2022122301:]
[OPT:VMPH,63,500]
Target buffer size found
[MSG:Using machine:MKS DLC32]
[MSG:No Wifi]
ok

ok
$$
$0=6
$1=25
$2=0
$3=5
$4=0
$5=1
$6=0
$10=1
$11=0.010
$12=0.002
$13=0
$20=0
$21=1
$22=1
$23=7
$24=300.000
$25=1000.000
$26=250.000
$27=1.000
$28=1000.000
$30=100.000
$31=0.000
$32=1
$50=0
$38=1
$40=1
$100=80.000
$101=80.000
$102=80.000
$103=100.000
$104=100.000
$105=100.000
$110=6000.000
$111=6000.000
$112=6000.000
$113=1000.000
$114=1000.000
$115=1000.000
$120=500.000
$121=500.000
$122=500.000
$123=200.000
$124=200.000
$125=200.000
$130=450.000
$131=450.000
$132=50.000
$133=300.000
$134=300.000
$135=300.000
ok

[gilaraujo (Gil Araújo)]

Try this a sanity check
reduce the DPI a lot to 150 maybe

then try engraving again with a bit of cardboard or similar, issue gets better?

Also, does the machine sound stutter while engraves the image?

[cggorman (Chris)]

Being slate, I assume this was run pretty fast. I do slate at around 7000 mm/min and 10-25% power. My speeds are above your hard limits. I’d suggest cutting speed by half and see if things start to line up.

[clocey (Curt)]

I tried on cardboard with the same settings but I will try with a lower dpi tomorrow

[clocey (Curt)]

If you got that from my number means I messed up some settings. I ran that tile at 7000. I will play more tomorrow

[cggorman (Chris)]

$110, $111, $112 on your $$ dump are your machine’s maximum speeds in mm/min. X, Y, & Z respectively. 6000 across the board, which is ridiculous for the Z, but whatever. If your layer settings exceeds these values, the machine will still only move as fast as the limiter (6000, in this case.). Bottom line…you are commanding your machine to move faster than it’s (supposedly) capable.

In my experience, acceleration is far more impactful on both job time and quality. $120,121,122 in mm/min². 500 across the board. No idea if that’s appropriate for your machine, but I find it suspect that all your numbers are the same and rounded. My Y accel is 1/4 that of X. It seems Yora did zero test/optimize, so this is likely on you to finish.

[clocey (Curt)]

Thank you for the advice. I am still learning