All. Thought I could figure this out on my own. Guess I am not that good. I am still stuck on getting 4Ax-Rotary to work the way I would like - which is possibly not the way it is intended to work...


In short, for a cylinder aligned with the rotating axis, BoB chops "A" axis post moves into 2 or 3 degree segments regardless of settings including "Machining Tolerance" or "Multi-Axis Posting/ Feed Move" settings. This really slows down the work by a factor of 10 or so.

What I was hoping for is that BoB would take line 11 through 25 shown below (none of which have a "Z" axis move), and combine them into something like:

N11 Z0.9995 A-45.216 F143.6157

I can't seem to get the "A" axis moves to be greater than one to three degrees.

Segment of post for "Machining Tolerance" set to 0.001:

(FIRST CUT - FIRST TOOL)
(JOB 1 Feature 4Ax-Rotary)
(FEATURE 4AX-ROTARY)


(TOOL #1 0.5 ENDMILL ROUGH)
N04 T1 M06
N05 A0.
N06 G90 G54 X1. Y0. S595 M03
N07 G43 H1 D1 Z1.35 M08
N08 Z1.0996
N09 G01 Z0.9996 F3.3369
N10 G93 A-2.79 F137.1254
N11 A-5.4 F146.584
N12 Z0.9995 A-8.1 F141.7005
N13 A-10.71 F146.5854
N14 A-13.5 F137.1297
N15 A-16.2 F141.6998
N16 A-18.99 F137.1279
N17 A-21.87 F132.8446
N18 A-24.66 F137.1286
N19 A-27.54 F132.8425
N20 A-30.51 F128.8191
N21 A-33.39 F132.8442
N22 A-36.36 F128.819
N23 A-39.33 F128.82
N24 A-42.3 F128.8206
N25 A-45.27 F128.8209

Also, I can't tell if the most recent version of V27 addresses this issue, as it will not post as a Demo, so not sure getting the latest and greatest BoB will address this.

Regarding the "Why" question: I work with wood (think round Queen Ann table leg), and a last pass of 4Ax-Rotary pretty much finish-sands the part for me.

Thanks in advance for any advice/ assistance.
-STrack

V25 Build 996
BC_4X_MILL (Unmodified post output shown above)