@neilferreri As promised, uploading the file with the treads samples. The S&F are very conservative, but they cut beautifully on my machines. You might need to experiment with the ‘pitch diameter offset’ and dial it to your own machine but this should provide a good starting point. Threads m4-m6 use 1/8 end mill for boring of the minor diameter holes, m8 and m10 use 1/4 end mill.
Hopefully I didn’t mess anything up, because there was a lot of copying and pasting.
I added chamfer tool paths after the thread milling operations. Was told many times to chamfer before thread milling but honestly never encountered any problems while doing it in this order.
threads v1.f3d.zip (160.0 KB)
Wasn’t sure how to upload the file, so added .zip extension. I’m assuming it will have to be removed after downloading? Anyways, hope this works and helps you guys.
I forgot to add, when thread milling blind holes, I like to leave at least 0.5mm gap at the bottom (axial stock to leave) to prevent the cutter from recutting to ‘chips’. They’re more like a dust but still make a very irritating grinding sound, and that can’t be good for the thread mill.