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Author Topic: scaling of project in Mach3 ??  (Read 2556 times)

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scaling of project in Mach3 ??
« on: December 04, 2013, 04:14:25 PM »
Hi Guys,

My mach3 controller seems to think my model is bigger than it is - all tool paths display correctly on the table screen, but it jogs the machine out to a size that seems about twice as big as the file was set up.

I've spent about 8 hours working this but just can't figure it out.

I am creating code in inches in Cut3d and using my Mach3 software in MM native units - could this be it?

I am cutting this on one of the Chinese 3040td desktop cnc machines.  And no, this is not my first experience with CNC - previous owner of full sized shop cnc over the years!  :D

Thanks for your help!

Joe
« Last Edit: December 04, 2013, 04:16:06 PM by joewinslow »

Offline ger21

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Re: scaling of project in Mach3 ??
« Reply #1 on: December 04, 2013, 05:51:09 PM »
First thing I'd do is try one of the Cut3D mm posts, rather than an inch post. Is the model in inches? If so, scale the model to mm's in Cut3D if you can.
Or even better, configure your machine in inches if those are the units you work with.

A bug was discovered last week when running inch code on a metric Mach3 setup, but I don't know if that's what you're seeing.
Gerry

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http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: scaling of project in Mach3 ??
« Reply #2 on: December 05, 2013, 10:28:12 AM »
Thanks Gerry - gave it a shot and still have same problem.

I created a new profile completely in metric on Mach3 and created complete metric tool-paths in cut3d - do you think this is the bug? 

Offline ger21

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Re: scaling of project in Mach3 ??
« Reply #3 on: December 05, 2013, 10:41:43 AM »
I have no idea, as I don't use a metric profile.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html

Offline Chaoticone

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Re: scaling of project in Mach3 ??
« Reply #4 on: December 05, 2013, 11:27:30 AM »
What are your steps per set to and how did you arrive at that number?
;D If you could see the things I have in my head, you would be laughing too. ;D

My guard dog is not what you need to worry about!
Re: scaling of project in Mach3 ??
« Reply #5 on: December 05, 2013, 11:49:54 AM »
for some reason I can't open the Motor Tuning window - can click on it but it wont open.

my previous settings were
400
400
400

these were provided by the manufacturer of the CNC

Offline Chaoticone

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Re: scaling of project in Mach3 ??
« Reply #6 on: December 05, 2013, 11:58:34 AM »
I have sent you a PM.
;D If you could see the things I have in my head, you would be laughing too. ;D

My guard dog is not what you need to worry about!