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--- mp:post_dev [2021/04/21 19:09] – old revision restored (2021/04/01 12:47) russell
+++ mp:post_dev [2023/06/29 16:06] (current) – russell
@@ Line 1: / Line 1: @@
-====== Post-Dev pre-Wiki Discussion Notes ======
+====== Post-Dev tips & tricks ======
+== Lathe G112 face interpolation mode ==
+\\
+Zoho ticket #24002 see 6/29/2023 response to client:
+The coords are not output Polar, just C Axis. The generic post functions fine.
+Thankfully, it is actually polar, it's just the C outputs are the Y positions.
+The post has this toggle because frequently, machine's need a C in front of the Y-axis polar positions, and on other machines as you mentioned, Y is required.
+\\
+''g112address   : 1    #0 = Y, 1 = C''\\
+\\
+So I have just switched this toggle and tested and I am returning a new PST/PSB to you with the Y label on all the Y polar positions.
+Please also note, if the rotary axis control setting in the toolpath is set to "no rotation" or "Y-axis" the post will respect this selection and initially position in XY, rather than XC, which I believe is not what you want, since the Y will not be at Y0:
+\\
+<code>
+G98 M134 P1000
+M154
+G0 C0. Y0.
+G0 X1.4142 Y-.25 Z.25
+G112
+</code>
+\\
+It's important to set the rotary axis control to C-axis, since for polar, you're only using XCZ in reality:
+\\
+<code>
+G98 M134 P1000
+M154
+G0 C0. Y0.
+G0 X1.5 Y0. Z.25
+G112
+</code>
+\\
+The above wouldn't matter if your machine didn't have an actual Y-axis. In that case the post would force XC always regardless of the setting.
+\\
+== Post-Dev pre-Wiki Discussion Notes ==
+\\
 A link to the document containing previous post-dev channel discussion is below:
 [[https://docs.google.com/document/d/1wnNZhUMV2odXw2TCqSOLHTeagObDSOTaBKPWdW5OxCQ/edit#heading=h.hvrythw3zzsx|Post-Dev History Doc]]

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