Ignore Low Z Limit for One Toolpath

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Ignore Low Z Limit for One Toolpath

Postby davemartin88 » Thu Nov 02, 2017 1:39 pm

I want to drill a hole in my spoilboard using a pocket toolpath as part of the alignment for a two sided project. Is there a way in Aspire to ignore the CNC low Z limit on one tool path so I can drill a hole 1/4" deep but have the limit in force for other tool paths? I'm thinking it has to be done at the CNC? (CamMaster CNC w/ WinCnC). Maybe I'm thinking about this the wrong way.
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Re: Ignore Low Z Limit for One Toolpath

Postby 4DThinker » Thu Nov 02, 2017 1:43 pm

If the low limit is a hardware limit then I doubt you can override it. Some controllers put a software limit in place to prevent cuts from digging into their beds. Usually you can override that in settings. If it is just the warning in Aspire that you'll be cutting through your material then you can ignore that.

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Re: Ignore Low Z Limit for One Toolpath

Postby davemartin88 » Thu Nov 02, 2017 3:03 pm

4DThinker wrote:If the low limit is a hardware limit then I doubt you can override it. Some controllers put a software limit in place to prevent cuts from digging into their beds. Usually you can override that in settings. If it is just the warning in Aspire that you'll be cutting through your material then you can ignore that.

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No, it's not the warning in Aspire, it's during the actual cutting, stops on a soft z low limit. Most likely will have to be done in the controller but guess you never know, thanks.
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Re: Ignore Low Z Limit for One Toolpath

Postby highpockets » Thu Nov 02, 2017 9:37 pm

If you're running Mach3 turn off Soft Limits drill your hole then turn them back on. But I'd be careful doing that. If you have a small soft limit set and no limit switch on the Z axis you could do damage to your machine (that would be bad).
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Re: Ignore Low Z Limit for One Toolpath

Postby IslaWW » Thu Nov 02, 2017 10:13 pm

Dave...
In order to cut into the Spoilboard deeper than the loZ boundary setting, you will have to do one of the following:
Use the single tool postP without a tool number (and therefore no measured tool)
Measure a tool lower than the top of the Spoilboard, set G92Z to top
Turn off the soft limits and boundaries (watch for file header turning back on)
Turn off the loZ boundary with a "[" in the ini file
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Re: Ignore Low Z Limit for One Toolpath

Postby davemartin88 » Thu Nov 02, 2017 11:18 pm

Thanks Gary, figured it would have to be done post Aspire but worth asking. I'll look at your suggestions and ask if I have more questions. May be safer for me to just use the file as it is, the path went through the piece enough to mark the spoilboard so I just used an electric drill to finish it off, lol. Thanks again.
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