Colin, Thank you. It was set to 80%. Changed to 100% and fixed it for now. Now I know where to look if it comes back again.

It has a much higher tensile than pure Nb, and contains Titanium. We are only going 0.06 deep, so ramping is a good option I had not considered. We were able to get a HSS endmill to plunge, but there is a lot of tool deflection. Carbide tends to wear really fast, and galls badly in the grade. So HSS is preferred.

Yes. I can ONLY longhand drill on the control. Very frustrating. Base post would be MC version 9. But even when I start with a clean MC post it still happens, but not consistently.

What would you start with for plunge milling a 1/16" HSS endmill in C-103? We are having issues with carbide 4FL tools. They just load up. Switching over to HSS, but need some advice on S&F.

We need to plunge, then circle mill some 0.087 holes on a slope in C-103 using a 1/16" endmill. Should we use Carbide or HSS? So far Carbide 4FL are just loading up then fail. What kind of S&F would you recommend starting with?

Your threadmill tips are worn. Likely way too high sfm. We had this same problem a few weeks ago with a single form tool. For the really small shank threadmills use 1/4 the recommended SFM. I would also add a spring pass. The tiny shank tools deflect. 0.50 deep for a 4-40 is ridiculous. If you can find a Tri-form 4-40 that is long enough go with that, or grind the shank to get the clearance you need. Single-form threadmills are not great for the small & deep holes. Way too much cycle time.

See the below code snip. Anyone else have this problem, and have a solution? When peck drilling in Mastercam Lathe, the peck increment basically decreases to infinity, making for VERY long files... This same problem has followed me from multiple versions since at least 9. It does not appear to be post related, as a brand new post still causes the error. Only thing I have ever found to eliminate the problem is change the hole depth. But that does not always work. 2nd peck, retract etc, none of them change the error. % O8905 N100 G20 / TEMP / / DRILL 1 / / / DRILL / / N110 G0 X1.0 Z6.0 N120 G0 T0606 M41 N130 G97 S200 M03 N140 G0 X0. Z.05 M9 N150 G99 G1 Z-.2 F.01 <First Peck is 0.25 deep, N160 G0 Z.05 N170 Z-.2 N180 G1 Z-.45 <0.25 peck N190 G0 Z.05 N200 Z-.45 N210 G1 Z-.65 <0.20 peck N220 G0 Z.05 N230 Z-.65 N240 G1 Z-.81 <0.16 peck, Subsequent pecks keep getting shorter, until they are 0.0001" eventually N250 G0 Z.05 N260 Z-.81 N270 G1 Z-.938 N280 G0 Z.05 N290 Z-.938 N300 G1 Z-1.0404 N310 G0 Z.05 N320 Z-1.0404 N330 G1 Z-1.1223 N340 G0 Z.05 N350 Z-1.1223 N360 G1 Z-1.1879 N370 G0 Z.05 N380 Z-1.1879 N390 G1 Z-1.2403 N400 G0 Z.05 N410 Z-1.2403 N420 G1 Z-1.2822 N430 G0 Z.05 N440 Z-1.2822 N450 G1 Z-1.3158 N460 G0 Z.05

Actually, i think the g76 thread is supposed to use fs 19, or fs 18. (See below) But for some reason my post ignores pfr_l, and is using fs 17 instead. (which is 2/1 place) If I change fs 17 to 4/3 place it will affect all the other feed statements. (format for lathe thread) pfr_l #Format feedrate for lathe if opcode$ = 104, [ #Format feedrate for lathe thread result = nwadrs(strf, feed) result = newfs (19, feed) ] else, [ result = nwadrs(strf, feed) result = newfs (18, feed) ] Curiously the change to the fs 17, 0.4 0.3 worked, but didn't affect the other feed rates. Makes no sense.

My lathe post creates the following for peck drilling. Peck depth is supposed to be 0.05". Any suggestions on what to fix in the post, or why this is happening? And no, I don't have G83. That is why this is longhand. Peck drilling is turned on in the machine definition. This is a random error, that happens most of the time. (And, is it possible to get the subsequent rapid to stop just before the last drill depth, without writing a custom drill cycle?) N110 G0 X1.0 Z6.0 N120 G0 T0707 M41 N130 G97 S2000 M03 N140 G0 X0. Z.05 M8 N150 Z.1 N160 G99 G1 Z.04 F.005 N170 G0 Z.1 N180 Z.04 N190 G1 Z-.02 N200 G0 Z.1 N210 Z-.02 N220 G1 Z-.0506 << this is where it gets off. It should be 0.05. N230 G0 Z.1 N240 Z-.0506 N250 G1 Z-.0662 N260 G0 Z.1 N270 Z-.0662 N280 G1 Z-.0742 N290 G0 Z.1 N300 Z-.0742 N310 G1 Z-.0782 N320 G0 Z.1 N330 Z-.0782 N340 G1 Z-.0803 N350 G0 Z.1 N360 Z-.0803 N370 G1 Z-.0814 N380 G0 Z.1 . . . to infinity pecks...

where in the post do I edit to get lathe thread feed to be 4 places, instead of 2pl? N970 G76 X.3937 Z-.1 P0219 Q0100 R0. F.04 <<< supposed to be 4pl. (F.0357)

Where in the .pst file does this custom cycle get inserted?

My lathe post creates the following for peck drilling. Peck depth is supposed to be 0.05". Any suggestions on what to fix in the post? (And, is it possible to get the subsequent rapid to stop just before the last drill depth, without writting a custom drill cycle?) N110 G0 X1.0 Z6.0 N120 G0 T0707 M41 N130 G97 S2000 M03 N140 G0 X0. Z.05 M8 N150 Z.1 N160 G99 G1 Z.04 F.005 N170 G0 Z.1 N180 Z.04 N190 G1 Z-.02 N200 G0 Z.1 N210 Z-.02 N220 G1 Z-.0506 N230 G0 Z.1 N240 Z-.0506 N250 G1 Z-.0662 N260 G0 Z.1 N270 Z-.0662 N280 G1 Z-.0742 N290 G0 Z.1 N300 Z-.0742 N310 G1 Z-.0782 N320 G0 Z.1 N330 Z-.0782 N340 G1 Z-.0803 N350 G0 Z.1 N360 Z-.0803 N370 G1 Z-.0814 N380 G0 Z.1 . . . to infinity pecks... claya

Drill cycle does not work on my fanuc lathe control. Can I use the custom drill cycle #9 for peck drilling? Is there a simpler custom cycle that will do the same thig as a G74? Or preferably G83? clay

Can someone please help with cleaning up some of these post errors? Some (like the home position, spindle rotation & feed error ) obviously are more critical than others (comments), but it would be nice to not have to edit ALL the time. I would be happy with just a fix to the home position, program number. I am very experienced at milling post editing, but these specific lathe errors elude me. Mori Seiki Lathe (Fanuc OT Mate) Mastercam X See the sample below: % O7900 <Where is this OLD program number coming from? It is 7805 in the tool settings N100 G20 / samplepost_2 / <is there a way to strip the first 5 characters in the file name, output the title of the program as a comment? / CNMG / / / MARTINFOOT /< Group comment, why does this repeat for every operation? / <What comment is this? / / RUF / / <Where is the toolpath group comment? N110 G0 X1.0 Z6.0 N120 G0 T0303 M42 N130 G50 S3500 N140 G96 S200 M03 <Spindle direction should be M04, Post ignores spindle setting, or alternate post leaves off M-code completely N150 G0 X.9213 Z.18 M8 N160 G99 G1 Z.08 F.012 . . . / DRILL .166 DIA. / / / MARTINFOOT / / N110 G0 X1.0 Z6.0 < Post always ignores the home position, regardless of operation setting N120 G0 T0606 M41 N130 G97 S450 M03 N140 G0 X0. Z.05 M8 N150 G74 R.250 <Change to 2500 N160 G74 Z-1. Q.370 F.2 <Change to 3700 N170 M9 M05 / 10-32 TAP / / / MARTINFOOT / / / / TAP / / N180 G0 X1.0 Z6.0 N190 G0 T0808 M41 N200 G97 S300 M03 N210 G0 X0. Z.05 M8 N220 G32 Z-.875 E.03125 M05 <Post uses E instead of F, for tapping only N230 G32 Z.1 M04 N240 M05 N260 G0 X3.0 Z3.0 M9 N270 M30 %

All Mcam experts, In Mcam X, or 9 for that matter. How do I force cutter comp to happen BEFORE the -Z plunge. In X there is a switch on the machine def/post options to enabe comp ABOVE the part. The default is no. It makes no difference in my output code with the switch on or off. It always comps with the tool in the material. this is not good. Is this one of the bugs in X that got fixed in X2? According to a friend, in Mcam 9 there is a Misc real value that controls the same feature. Any one know how to do that in 9? ca