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02-02-2008, 06:13 PM #1
Inexpensive single point thread mill source?
I've got some parts I need to make a couple of - with oddball very fine threads: 1" 32. The parts are aluminum. I can get a tap and die from mcmaster but that'll cost a couple hundred bucks. I need like three of these parts.
I'm thinking using the single-point style of thread mill, I just can't get over how expensive they are. Again, I'm making -32 threads in aluminum. Solid carbide isn't going to be necessary.
Before I just start grinding on a standard 4-flute end mill, does anyone know of a place I get get, say, one high speed steel or inexpensive carbide single-point thread mill?
02-02-2008, 06:19 PM #2
Could you take a 10-32 tap and grind all but one set of the teeth off? I think I've seen people mentioning doing that for a quick threadmill job.
That would be pretty inexpensive to try. Of course, thats a pretty small diameter tap so you may not be feeding quickly or deeply.
02-02-2008, 06:21 PM #3
how about using a turning tool ! thats what I use in my mill it works fine . single point hss or even a hand ground one . easy
02-02-2008, 06:47 PM #4
Grinding a tap sounds like a great idea for what I need. Thanks!
02-02-2008, 06:55 PM #5
02-02-2008, 08:00 PM #6
Scientific Cutting Tools has a great line of fairly inexpensive thread mills in single tooth, staggered tooth, multiple flute straight, and multiple flute helical designs. For your aluminum application, I'd suggest their TM395-32C, in T15 HSS with TiCN coating.
02-02-2008, 11:10 PM #7
If you have a small dia lathe threading bar, put it in a collet chuck and your good to go,, works very well for small qty parts,,
02-02-2008, 11:29 PM #8
Hmm, I wonder if we are making the same part ( just kidding). I am doing a job in Alum that I am thread milling 8 holes. It have a 1.0-32 thread. I use a thread mill for a 8-32 thread. Works great. One thread mill lasts me about 5 months. The thread is only .25 deep and the L.O.C on the mill is .3 so I just make one pass and I am done. Using a single would be a pain. Too many circles.