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Mounted Points ?????

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  • Mounted Points ?????

    Anyone know fo a source for mounted points with 1/4"-28 studs??

    I have a small ID grinding job to do, my T&C grinder has 3 arbors I can use, one uses a 1/8" collet, one is internally threaded 5-40 and the other is internally threaded 1/4"-28 and that is the arbor I need to use. I found some stones with a 1/4"-20 thread but can't find any with 28 tpi stud.
    I have some small 1/2" stones with a 5-40 stud but the stone is too small and would require 18K rpm's plus. I need a 1" to 1 1/4" dia stone with a 28 tpi stud. Are they still made??? they must have been at one time.


  • #2
    If anyplace may have them it's here
    Been there, probably broke it, doing that!
    I am not a lawyer, and never played one on TV!
    All the usual and standard disclaimers apply. Do not try this at home, use only as directed, No warranties express or implied, for the intended use or the suggested uses, Wear safety glasses, closed course, professionals only


    • #3
      If the OP has collets why does he need threaded shanks to his points? I can see the need for them in a "production" environment but not a home shop environment if the speed, "hang-out" and depth of cut are not too aggressive.

      Its the same as for threaded shank end-milling cutters.

      (see maximun speeds)


      • #4
        oldtiffie, the collet arbor I have will only take 1/8" shanks....... it's for real small points like Dremel stuff. You won't find a 1" dia. stone with a 1/8" shank. I was thinking of running a 28 tpi die over the 20 tpi shank, I know it will chew it up abit but it will work so I can use it on my arbor.