We use Scientific Cutting Tool thread mills, they work great, and they have a huge variety of sizes and lengths to choose from, Harvey Tools also has a large selection. The advantage with the Harvey Tools is that there is a library available to download from them into your Fusion 360. What I usually do is look for a Harvey Tool that is close to what I have and use that for the tool model. Regarding feeds and speeds, remember that interior hole work, the feeds need to be adjusted. I use this as a guide, tm_sptmun.pdf (sct-usa.com)
When I choose a thread milling operation, I get an option to set cutting feed rate separately from plunge feed rate, these are not tied together. If I type in the surface speed in the box and type in the suggested chip load per tooth, and then override the spindle speed, it does change the feed rate in my Fusion.
7000 RPM for a thread mill operation seems awfully fast, but I have no idea what material you are machining. I would suggest doing a test on a scrap piece of metal to dial in your settings for the thread mill. Always sucks to spend so much time on a part and the last thing you do is put threads in it, by hand tapping or thread milling and then have the project go sideways. I guess that is why Helicoils and thread inserts were invented, 😃.
LeoC
LeoC
Fusion
