Author Topic: Tool Change Codes  (Read 401 times)

Offline buggalugs

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Tool Change Codes
« on: March 13, 2025, 12:06:35 pm »
A good while back when sing Mach3 there was a G-Code process which halted the the current task, stopped the spindle allowing you to change the tool, hit commence and it would continue where it left of.

For the life of me I cannot remember the code sequence or more to the point I cannot find anything about it on here. ::) 
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Offline lloydsp

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Re: Tool Change Codes
« Reply #1 on: March 13, 2025, 13:21:13 pm »
M9  ; COOLANT OFF (optional)
M5  ; SPINDLE OFF
M25 ; PAUSE
G28 ; GO TO MACHINE RETURN POSITION (OPTIONAL)
T6 M6 ; ESTABLISH NEW TOOL ID (t6 IN THIS CASE)
G43 H6 ; FETCH TOOLING HEIGHT AND OFFSETS FROM MACHINE DEFININTIONS
M3 S1800 ; SET NEW SPINDLE SPEED, AND MOTOR ON
G4 P6.00 ; OPTIONAL WAIT DELAY FOR SPINDLE TO RUN-UP (SIX SECONDS, HERE)
M8 ; COOLANT ON (OPTIONAL)

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Offline buggalugs

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Re: Tool Change Codes
« Reply #2 on: March 13, 2025, 13:41:58 pm »
Thank you so much Lloydsp
I'm sure this will help others wishing to do the same.

I love using Mach3 on my other CNC machine but this Fox Alien Machine will only talk to a USB connection and I'm blowed if I'm going to spend more on Mach4  :-\     
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Offline EddyCurrent

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Re: Tool Change Codes
« Reply #3 on: March 13, 2025, 14:46:48 pm »
Howay man these are just G Code and M codes used by all CAM software.
There's a good resouce here, https://machmotion.com/documentation/Software/Mach3/Mach3%20G-Code%20Manual.pdf
« Last Edit: March 13, 2025, 14:49:26 pm by EddyCurrent »
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Offline lloydsp

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Re: Tool Change Codes
« Reply #4 on: March 13, 2025, 16:45:01 pm »
Yeah, Buggs.  I only answered your question.

But the real problem isn't Mach3.  It's your post-processor in CamBam.  Those codes are generated by the post-processor.

There's are 'tool change' and 'tool definition' sections in your post-processor definitions that can be edited to contain the necessary codes.

Lloyd
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