Kerf Compensation??

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APCNC
Posts: 25
Joined: Thu Oct 24, 2024 7:04 pm
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Kerf Compensation??

Post by APCNC »

Hello, Im setting up a new acorn plasma system. Very basic 2 axis system. Ive just noticed that there is no allowance for kerf in the Profile Manager. Looking in manual it doesnt show kerf codes listed. Then I notice sample programs do not have any kerf compensation. CNC12 didnt have an issue with the program using G41. Will CNC12 kerf compensate left for G41 or ignore? Do I need to add a kerf value in the program or can it be added to profile manager? I get that alot is done in CAM software especially now but reading about loading all values through profile manager to keep a basic NC that will work for all materials current setting etc, Im perplexed. If this is the case why is kerf left out defeating that purpose? You surely cannot have the same kerf compensation with 40A Nozzle as used with 100A,200A or 300A etc with any accuracy. Can the Profile Manager be modified? Does compensation have to be done in CAM? For this current system Im working on it will not be a huge problem with with 65A being the largest but still has multiple kerf values. Thanks


APCNC
Posts: 25
Joined: Thu Oct 24, 2024 7:04 pm
Acorn CNC Controller: Yes
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CNC Control System Serial Number: 3484E42058CE-1025248741
DC3IOB: No
CNC12: Yes
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Re: Kerf Compensation??

Post by APCNC »

Update:
I put a 5X5 square into the intercon to test. Ive found the intercon just compensates the size but also found a bug you may be interested in.
This is the Code generated:
--- Header ---
; CNC code generated by Plasma Intercon
; Description: TestKerf
; Programmer:
; Date: 06/03/2025
N0001
G17 ; Setup for XY plane
G20 ; inch measurements
G90 ; absolute positioning
M65
; --- Line ---
N0002 The way this compensates we should have a 'G0 X-0.03 Y0' between N02 & M61 to offset
M61
G1 X-0.03 Y5.03 This is not a square 90° line without the offset needed above as it runs from 0,0 to -0.03,5.03
; --- Line ---
N0003
G1 X5.03 Y5.03
; --- Line ---
N0004
G1 X5.03 Y-0.03
; --- Line ---
N0005
G1 X-0.03 Y-0.03
M62
; --- End of Program ---
N0006
M30


APCNC
Posts: 25
Joined: Thu Oct 24, 2024 7:04 pm
Acorn CNC Controller: Yes
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AcornSix CNC Controller: No
Allin1DC CNC Controller: No
Hickory CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: 3484E42058CE-1025248741
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Kerf Compensation??

Post by APCNC »

TestKerf Dimensions
TestKerf Dimensions
These are my dimensions in Plasma Intercon.


Joey
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Re: Kerf Compensation??

Post by Joey »

Kerf comp is on the future feature list.

I'll check out the lack of offset on the G0


APCNC
Posts: 25
Joined: Thu Oct 24, 2024 7:04 pm
Acorn CNC Controller: Yes
Plasma CNC Controller: No
AcornSix CNC Controller: No
Allin1DC CNC Controller: No
Hickory CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: 3484E42058CE-1025248741
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Kerf Compensation??

Post by APCNC »

Thanks, The G0 line doesnt exist. Thats just my comment to add on N00002 and end of first G1 after M61.
So does it ignore G41-2 at this point? Or will it work with a value in the program?


ShawnM
Community Expert
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Location: Clearwater, FL

Re: Kerf Compensation??

Post by ShawnM »

I use Vcarve Pro for my plasma CAM drawings and created a tool database for "Plasma Cutting" with all the kerf values from .018" through .1" that were listed in my Hypertherm Powermax 85 manual. There's settings for "kerf width" in the cutting parameters in my plasma tool library. :D


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