Chipmakers, Here is a new version of the threads program which I posted last year. The new feature in this one is that it also calculates the depth of feed for a compound set at 29.5 degrees. (I didn't think of this before, because I was running a small CNC lathe. Now, I have a 12" Clausing manual one, and need that additional data.) This one has the C source, the makefile for linux, the makefile for a Sun, and the executable for the Sun bundled in a gzipped tar file. If you have any other unix system, this should work to make you an executable with little additional effort. The file name will be DoN-threads-II.tgz, and this text will be DoN-threads-II.txt For whoever needs just the source for compiling under MS-DOS, let me know, and I'll e-mail the source alone to you. I don't remember who it was who compiled the previous version under MS-DOS and put it in the dropbox, but whoever it was -- could you please contact me for the source and repeat the operation. Thanks and Enjoy, DoN.