Originally Posted by Geof
Why can't you just use this to make a very fine pitch thread with a very steep taper?
Well I can, but that dosn't realy help cncsr does it? :P

He dosn't have my cam package and has expresses and interest in Macros not cad/cam.

Originally Posted by HuFlungDung
The Haas manual doesn't address a conical interpolation that I can find, but I was wondering if there were any undocumented moves that it can be tricked into making. I have not attempted to find out thus far on my own machine.
I can post the code but graphicaly that dosn't tell you anything. unless you have a reverse g-code reading thingamajig.

how it ends up looking is a G2 or g3 lets say you start at point x,y with a radius of say .5". Notice that the increment in z is same as the increment in R but the starting point in each helix has also changed (its a function of trig, which I have still been to busy to write out for CNCSR in the form of a macro, sorry) the code would go something like:

O8000
( PROGRAM, UNTITLED.NCF )
( WORKGROUP001 )
N1T1M6
G0G17G40G80G90
G0G54G90G94X1.115Y0.S3438M3
G43Z.1H1M8
Z0.
G41G1X.9125F27.5D1
G2X-.9134Z-.01R.9129
X.9143Z-.02R.9138
X-.9151Z-.03R.9147
X.916Z-.04R.9156
X-.9169Z-.05R.9164
X.9178Z-.06R-.9173
X-.9186Z-.07R.9182
X.9195Z-.08R.9191
X-.9204Z-.09R.9199
X.9213Z-.1R.9208
X-.9221Z-.11R.9217
X.923Z-.12R.9226
X-.9239Z-.13R-.9234
X.9248Z-.14R.9243
X-.9256Z-.15R.9252
X.9265Z-.16R.9261
X-.9274Z-.17R-.9269
X.9283Z-.18R.9278
X-.9291Z-.19R.9287
X.93Z-.2R.9296
X-.9309Z-.21R.9304
X.9318Z-.22R-.9313
X-.9326Z-.23R.9322
X.9335Z-.24R.9331
X-.9344Z-.25R.9339
X.9353Z-.26R-.9348
X-.9361Z-.27R-.9357
X.937Z-.28R.9366
X-.9379Z-.29R.9374
X.9388Z-.3R.9383
X-.9396Z-.31R-.9392
X.9405Z-.32R.9401
X-.9414Z-.33R.9409
X.9423Z-.34R-.9418
X-.9431Z-.35R.9427
X.944Z-.36R.9436
X-.9449Z-.37R-.9444
X.9458Z-.38R.9453
X-.9466Z-.39R-.9462
X.9475Z-.4R-.9471
X-.9484Z-.41R.9479
X.9493Z-.42R.9488
X-.9501Z-.43R-.9497
X.951Z-.44R-.9506
X-.9519Z-.45R-.9514
X.9528Z-.46R.9523
X-.9536Z-.47R.9532
X.9545Z-.48R.9541
X-.9554Z-.49R.9549
X.9563Z-.5R.9558
X-.9571Z-.51R.9567
X.958Z-.52R.9576
X-.9589Z-.53R-.9584
X.9598Z-.54R-.9593
X-.9606Z-.55R-.9602
X.9615Z-.56R.9611
X-.9624Z-.57R-.9619
X.9633Z-.58R-.9628
X-.9641Z-.59R-.9637
X.965Z-.6R.9646
X-.9659Z-.61R.9654
X.9668Z-.62R.9663
X-.9676Z-.63R.9672
X.9685Z-.64R.9681
X-.9694Z-.65R.9689
X.9703Z-.66R.9698
X-.9711Z-.67R.9707
X.972Z-.68R-.9716
X-.9729Z-.69R-.9724
X.9738Z-.7R-.9733
X-.9746Z-.71R.9742
X.9755Z-.72R-.9751
X-.9764Z-.73R.9759
X.9773Z-.74R.9768
X-.9781Z-.75R.9777
X.979Z-.76R.9786
X-.9799Z-.77R-.9794
X.9808Z-.78R.9803
X-.9816Z-.79R-.9812
X.9825Z-.8R.9821
X-.9834Z-.81R.9829
X.9843Z-.82R.9838
X-.9851Z-.83R.9847
X.986Z-.84R.9856
X-.9869Z-.85R.9864
X.9878Z-.86R.9873
X-.9886Z-.87R.9882
X.9895Z-.88R.9891
X-.9904Z-.89R.9899
X.9913Z-.9R.9908
X-.9921Z-.91R-.9917
X.993Z-.92R.9926
X-.9939Z-.93R.9934
X.9948Z-.94R-.9943
X-.9956Z-.95R.9952
X.9965Z-.96R.9961
X-.9974Z-.97R.9969
X.9983Z-.98R.9978
X-.9991Z-.99R.9987
X1.Z-1.R.9996
G40G1X1.2025
G0Z.1
M9
M5
M30


Now the steps will vary depending on your stepover, in this case my thread pitch becuase I am using a thread making plug in.