Brainfart

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monalek49
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Joined: Tue Aug 06, 2019 5:41 am
Model of CNC Machine: Laguna IQ

Brainfart

Post by monalek49 »

Here it is Sunday night and since we have not had very many trick or treaters, I am on candy coma. I cannot remember the formula to set cutting depth Z +.03
Any help out there

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SteveNelson46
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Re: Brainfart

Post by SteveNelson46 »

Try Z+.03=
Works for me.
Steve

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Adrian
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Re: Brainfart

Post by Adrian »

Depends if you want to use it as a one time setting or to have it update whenever you recalculate the toolpath if the material thickness changes.

For the former you would use

Code: Select all

Z+0.03= or T+0.03=
The zero before the decimal is optional

For the latter it's the same but don't enter the = sign.

Code: Select all

Z+0.03 or T+0.03

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adze_cnc
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Re: Brainfart

Post by adze_cnc »

You can also combine all this with documents variables in various ways,

For example: when cutting "Baltic Birch" plywood (profiles or pockets) I'll use a down cutting bit for the first pass to prevent splintering the top as BB tends to end up looking like a frightened porcupine if you don't. Then I'll cut the rest with an up cutting bit.

I define three document variables:
  1. ps = pre-score depth
  2. oc = amount to over cut into the waste board (this value generally stays at 0 because if you set up things right you'll cut fully through without needing an over cut. Rarely does it ever get set to anything larger than 0.004 inches or 0.1mm.)
  3. lp = small amount for ''Allowance" when using the "Do Separate Last Pass" option of the profile toolpath (maybe 0.01 inches).
The down cut toolpath uses start depth 0 and cut depth {ps}

The up cutting toolpath will use start depth {ps} and cut depth t-{ps}+{oc}

That way I can change the document variable values in one place and re-calculate all the toolpaths at once.

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