Has anyone else noticed that their initial rapid (after you press carve) is super slow? All my rapids after the router gets the the carve location are normal. it’s just as soon as it starts off. This just started happening yesterday (Dec. 18 2015).
yes mine just did that yesterday
What $$ settings do you have?
I haven’t changed anything always worked fine before I can look
Are you using Easel?
Same Problem
Here’s what my settings are:
$0=10 (step pulse, usec)
$1=255 (step idle delay, msec)
$2=0 (step port invert mask:00000000)
$3=3 (dir port invert mask:00000011)
$4=0 (step enable invert, bool)
$5=0 (limit pins invert, bool)
$6=0 (probe pin invert, bool)
$10=3 (status report mask:00000011)
$11=0.050 (junction deviation, mm)
$12=0.002 (arc tolerance, mm)
$13=0 (report inches, bool)
$20=0 (soft limits, bool)
$21=0 (hard limits, bool)
$22=1 (homing cycle, bool)
$23=3 (homing dir invert mask:00000011)
$24=25.000 (homing feed, mm/min)
$25=750.000 (homing seek, mm/min)
$26=250 (homing debounce, msec)
$27=1.000 (homing pull-off, mm)
$100=40.000 (x, step/mm)
$101=40.000 (y, step/mm)
$102=188.976 (z, step/mm)
$110=8000.000 (x max rate, mm/min)
$111=8000.000 (y max rate, mm/min)
$112=500.000 (z max rate, mm/min)
$120=500.000 (x accel, mm/sec^2)
$121=500.000 (y accel, mm/sec^2)
$122=50.000 (z accel, mm/sec^2)
$130=790.000 (x max travel, mm)
$131=790.000 (y max travel, mm)
$132=100.000 (z max travel, mm)
I haven’t changed anything since prior to this issue. It’s just on the initial rapid from home, all rapids afterwards are normal.
Hi Rusty
I’m not at my computer. Can you please make a simple shape in Easel like a square using on the path carving. Then first test to see if it is still happening and if so export the gcode and see if the gcode is telling the machine to slow down on that move?
It does look like the first move is very slow in the gcode, see below.
SlowRapid.nc (802 Bytes)
@rodovich @paulkaplan @EricDobroveanu did something change in a PR on Friday that would make the first rapid really slow?
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While you are there, any reason for the G21 and G90 commands at the end of the file? Noticed these the other day which are also new (ish).
Cheers
Ian
Yes using easel
$0=10 (step pulse, usec)
$1=0 (step idle delay, msec)
$2=0 (step port invert mask:00000000)
$3=3 (dir port invert mask:00000011)
$4=0 (step enable invert, bool)
$5=0 (limit pins invert, bool)
$6=0 (probe pin invert, bool)
$10=3 (status report mask:00000011)
$11=0.050 (junction deviation, mm)
$12=0.002 (arc tolerance, mm)
$13=0 (report inches, bool)
$20=0 (soft limits, bool)
$21=0 (hard limits, bool)
$22=0 (homing cycle, bool)
$23=3 (homing dir invert mask:00000011)
$24=25.000 (homing feed, mm/min)
$25=750.000 (homing seek, mm/min)
$26=250 (homing debounce, msec)
$27=1.000 (homing pull-off, mm)
$100=40.000 (x, step/mm)
$101=40.000 (y, step/mm)
$102=188.976 (z, step/mm)
$110=8000.000 (x max rate, mm/min)
$111=8000.000 (y max rate, mm/min)
$112=500.000 (z max rate, mm/min)
$120=500.000 (x accel, mm/sec^2)
$121=500.000 (y accel, mm/sec^2)
$122=50.000 (z accel, mm/sec^2)
$130=790.000 (x max travel, mm)
$131=790.000 (y max travel, mm)
$132=100.000 (z max travel, mm)
Ouch! Is this intentional?
This can cause the stepper motors to lose steps. If you set this parameter to 255 ($1=255) grbl will keep your motors enabled and you won’t lose steps.
This parameter is used to turn the motors off after a delay if they tend to over-heat, but if they are turned off you may lose position.
1 Like
i have never touched any settings but i did notice it was diff the rustys setting
It does look like the first move is very slow in the gcode, see below.
SlowRapid.nc6 (802 Bytes)
Maybe I’m reading this too literally. The only rapid move in this file is at the end where the G-code returns to Zero.
Do you have an earlier G-code file produced by Easel that has faster feed rates in the beginning?
I would recommed that you change $1 to 255 unless someone gives you a good reason not to.
i will change it to 255 thanks for noticing
i was cutting older parts today and still slow at start but after first cut normal rapids all the way to going back to home
I"m having the EXACT same issue here. Was using it just fine prior to the 18th and on it today to run another job and it’s starting slow… mine skipped a few steps after I let it go, but then works other times.
They must have changed something.