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Type: Posts; User: brownandsharp

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  1. Replies
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    2 smallest ones on the right.

    2 smallest ones on the right.
  2. Replies
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    I only use upspiral endmills for acrylics. for...

    I only use upspiral endmills for acrylics. for delrin, nylon, and abs. i use hi helix hss with great results.

    typically for a 1/2 cutter, .5 doc 40% tool dia. i'll feed 160 ipm @ 7000 rpm

    also...
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    if you are adamant on sticking with 2800 rpm. go...

    if you are adamant on sticking with 2800 rpm. go 20-25. ipm. on that drill.

    don't worry it wont break.

    what you can do is give it a tighter tip angle .. and make sure it is SHARP!!
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    i machine delrin alot and don't use any coolant...

    i machine delrin alot and don't use any coolant just blast it with 2 air nozzles about 90-110 psi.

    sharp cutters cannot be emphasized enough when cutting plastics.

    2800 rpm is too much rpm for...
  5. bestline auto feed problem on a series 2

    hi all.

    i crashed the power feed motor on my bridgeport. I hadnt noticed the stops werent were they were suppose to be and WHAM.

    right into the motor.

    now it wont work

    i opened it up to...
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    whats the highest rpm your machine can go?

    whats the highest rpm your machine can go?
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    Poll: NTMA, 8 months pre-employement training. then...

    NTMA,
    8 months pre-employement training. then they sent me to work @ $8 an hour, employer sent me back to NTMA for cnc programming 1 & 2, then I went back for mastercam 1 & 2.
    now I make 3 times...
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