Using VCarve Pro, Profile path, On the line my machine shutters & shakes. This moves the centering so if there were follow up profiles they are off by about .25 inch. Depth doesn’t seem to matter. This happens even if i set the Z extra high and am not cutting. XY problem only. Doesn’t matter where I place the center.
If I go a 32nd bigger or smaller diameter this does not happen. Doesn’t happen if it’s an outside or inside profile, only when “on” line. Doesn’t happen if I do a pocket. No errors thrown that I can see.
Is this a controller problem? VCarve output problem? I guess I can avoid .5 profile cuts, but I mean what if there’s some other magic size that does the same thing? I’ve tried several, so far only happens on the .5d.
This gcode causes the problem:
%
T1 (MSG, Insert Tool 1)
G0 G17 G20 G90 G49
G0 Z0.8000
G0 X0.0000 Y0.0000 M03 S18000
M0(MSG, Click ‘Continue’ when the spindle is up to speed)
G0X1.7500Y2.0000Z0.2000
G1Z-0.0313F25.0
G3X2.0000Y1.7500I0.2500J0.0000F50.0
G3X2.2500Y2.0000I0.0000J0.2500
G3X2.0000Y2.2500I-0.2500J0.0000
G3X1.7500Y2.0000I0.0000J-0.2500
G0Z0.2000
M5
G0 Z0.8000
G0 X0.0000 Y0.0000
M2
This 17/32 version does not cause a problem:
%
T1 (MSG, Insert Tool 1)
G0 G17 G20 G90 G49
G0 Z0.8000
G0 X0.0000 Y0.0000 M03 S18000
M0(MSG, Click ‘Continue’ when the spindle is up to speed)
G0X1.7344Y2.0000Z0.2000
G1Z-0.0313F25.0
G3X2.0000Y1.7344I0.2656J0.0000F50.0
G3X2.2656Y2.0000I0.0000J0.2656
G3X2.0000Y2.2656I-0.2656J0.0000
G3X1.7344Y2.0000I0.0000J-0.2656
G0Z0.2000
M5
G0 Z0.8000
G0 X0.0000 Y0.0000
M2
What version of Onefinity controller firmware are you running? 1F has addressed some of the “stuttering when routing circles” issues in 1.0.6 (beta). There was also an issue with the first version of the VCarve - Onefinity inches postprocessor. It may be worth investigating the topics “1.0.6” and “VCarve Postprocessor” and make sure you’re up to speed on those two solved issues.
Hi, thanks for the reply. I’m on 1.0.5. I’ve only had the machine for 2 weeks and downloaded the PP around that time from this page: https://forum.onefinitycnc.com/t/vectric-post-processors-download-links-included/640 dated 12/16/2020. There’s no version number, so really no clue if this is the latest, got there from the VCarve accessories page.
If I install the beta will it self update to release when it comes out? Sorry, new to all this, still learning.
Also, it would be nice if the main support page added a “Onefinity Downloads” section that had links to the latest firmwares, betas, PP’s, all the things with dates & version numbers so we didn’t have to hunt & peck in the forums. Only my 2 cents.
I just tried this with the 1.0.6 beta firmware. Problem still exists, massive stutter on the top half of the circle. As far as I know I’m using the latest PP.
As I was typing “top half of circle” it trigger a new test I wanted to try. I had been using “Direction Conventional” for all my tests. So started over and create two new toolpaths with identical settings for both on a .5d (inches btw), “on” line profile, with only difference being “Direction”; Climb vs Conventional. Only conventional had the problem, climb worked perfectly.
Summary:
VCarve Pro 10.512
1F Firm: 1.0.5 & 1.0.6
PP dated 12/16/2020
This stutters every time:
1/2" diameter vector (center location irreverent)
Profile Toolpath
Depth doesn’t seem to matter, but I only tried a couple (1/32 & 1/16)
Machining “On” vector
Direction Conventional
All other settings the same: changing the size of the circle seems to fix it (at least when I tried 1/32 bigger & smaller). Note: I did try a .5001d circle and it still stuttered.
All other settings the same: changing the direction to “Climb” seems to fix it.
All other settings the same: changing the machining to outside or inside vector seems to fix it.
UPDATE: I read someone else’s post with a similar problem and they fixed it with the MM PP. I just tried that. Problem exists when I tried the same toolpath but exported with the MM.
I had problems with circles when I first started but support suggested switching to metric which I did and haven’t had a problem since. Having switched to metric I have found that I like it so much better than imperial.
Hi alden. Do you mean modeling in metric? I did try saving my toolpath with the MM postprocessor, which didn’t help. Shop is 21 degrees right now, once it’s warmed up I’ll try the same test with a 12.70mm circle.
But for workarounds I think I’ve found them, but obviously there still seems to be a problem somewhere with either the firmware or the PP on some (at least .5") circles that should probably be addressed. I’m not sure this forum is where to report this or not. Initially I was just trying to figure out what was going on.
UPDATE: I just tried a VCarve project using metric units, 12.70mm circle, saving the toolpath with both PPs (Inch & MM) and ran the test twice. The stutter happen with both runs.
I had the same issue whe cutting a 3/4” pocket I could go .030” either smaller or bigger and it would clear. I could also do a profile cut on a 1/4” vector with a 1/4” bit and it would clear. All using imperial or metric PP
After several discussions with support after I created the project in imperial I converted it to metric and created the tool paths with the metric PP, problem solved. I ran it 3-4 times no problems I then created a different project doing the same thing problem reappeared! To be honest I’ve been so busy I haven’t contacted 1F about this I just worked around it.
I was meaning going 100% metric in design and pp. I have not had a recurrence since I went metric. Support told me there was a glitch in the software and would try to correct it.