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  1. 23rd Jul 2021, 08:32 PM #1
    envirotronics
    envirotronics is offline New Member
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    Default Thread cutting on a HAFCO AL960-B Lathe

    Hi,
    I am new to thread cutting and having done a few today fell short of the mark when it comes to appearance.
    The threads work OK but look like the dog has chewed them. Very coarse / rough finish.
    I was doing 3/4" Imperial- 14TPI on Tool steel bar
    Chuck rotation speed 270RPM
    I have watched videos and disappointed that I cant get my threads to look so smooth.
    Any clues?
    Graham
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  2. 27th Jul 2021, 04:02 PM #2
    Grahame Collins's Avatar
    Grahame Collins
    Grahame Collins is offline Super Moderator
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    Default

    I have moved this post from Terms of Use to MetalWork General

    How you managed to post it there in the TOU is beyond me.Your question can be answered here in MetalWork General.

    Grahame
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  3. 27th Jul 2021, 05:49 PM #3
    elanjacobs
    elanjacobs is offline Gear expert in training
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    Default

    @Grahame Looks like it was reposted in the proper forum the next day and has been responded to https://metalworkforums.com/f65/t206...finish-threads
    Gear cutting specialists and general engineers www.hardmanbros.com.au
    Fine pitch gear cutting from 0.1 Module www.rigear.com.au
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