Have you tried thread milling? I've found that it works super great!
The Fusion 360 Thread program generates fine tool paths, once you tune it in.
The two things to pay most attention to is setting the "diameter offset" to the same value as your thread pitch (for standard threads,) and turning on "lead to center" in the linking settings.
Micro 100 has some reasonably affordable single point thread mills. The 100 tool might be about right for 1/8" clearance #6 threads?
https://amzn.to/2KdHZx8 Or the 120 tool (TM-120-8) I've used their 180 tool for M6, and their 250 tool for M10 threads. I've also used a Sandvik Coromant M2.5 thread mill, which has multiple teeth and thus can only do exactly 0.45mm pitch, but it cuts nicely, with no special preparation, cooling, or holding solution needed. Tool pressure is quite minimal, too.
Yes, thread mills are more expensive than taps, but I haven't had one thread mill break yet, and if it does, it's smaller than the clearance hole and thus just falls out without ruining the part.
I'm a convert, and big fan :-)