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  1. C

    I'm a Stud

    Nitric Acid dissolves steel, but not aluminum. (maybe alloy dependent) CarlBoyd
  2. C

    How do you clean or unclog non woven abrasive belts?

    Wild guess here, try throwing them in a washing machine at the laundromat and not at home. CarlBoyd
  3. C

    single phase motor not starting- capacitor?

    Capacitors normally start low with an ohm meter and then go up. Starter caps are cheap. Starter caps don't last forever. Go 240 Volt. CarlBoyd
  4. C

    Looking for some one who can make bridge for russian bass from 1960s

    You have a couple of pictures of 4 string bass guitars, and drawings and pictures of a 6 string bridge. What exactly do you want? CarlBoyd
  5. C

    RIP: craigs list

    The complaint link is generally listed on the receipt for payment. CarlBoyd
  6. C

    FS: Flex Shaft 5/8M x 5/8F x 49"

    Looks like it would work with a shopsmith multi tool. I had on once. CarlBoyd
  7. C

    how are large custom machine foundations removed?

    They did this at the place I work several years ago, BIG foundation. It took weeks. CarlBoyd
  8. C

    What's the Best Tap for my Application?

    In my shop the #1 cause of broken taps is not starting the tap straight with the hole. Check your fixturing on the drilling and tapping steps. CarlBoyd
  9. C

    SB 10L Thread dial hits lead screw right-hand bracket

    You are very welcome here Frank. Some previous owner broke the thread dial housing on my LeBlond. I am sure that happened when it smacked into the lead screw support. I don't let that happen, neither should you. CarlBoyd
  10. C

    SB 10L Thread dial hits lead screw right-hand bracket

    What am I missing here? Stand at the lathe and don't let it happen! Just be careful, I doubt you can make it idiot profe. CarlBoyd
  11. C

    Any shops in Florida hiring

    Orlando https://www.lockheedmartinjobs.com/job/orlando/machinist-sr-cnc-gd-and-t-g-and-m-code-setup-orlando-fl/694/35291882976
  12. C

    Machining to sales

    My best friend is a salesman.He sells industrial process and control equipment. He says he needs 10 sales a month to make a living. To make a sale he needs to make 10 factory visits. To make a factory visit he needs to make 10 phone calls. 1000 calls a month, 990 rejections, 1000s of miles and...
  13. C

    checking end mills for runout

    Wmpy 2 questions on your measuring method. 1) The picture looks like you are measuring on the relief and not at the cutting edge. Where on the end mill are you measuring. A close up photo would help. 2) The picture shows you are measuring pretty close to the tip, are you on the tip radius...
  14. C

    Start Contactor Sizing

    From my response to your last thread. "Impedance of a capacitor is 1/2*pi*freq*C, so 0.88 Ohms for 3000 uFd. Baldor data says 600-700% full rated current to start. For 30 HP That's in the 600 Amp range, but you can't get that through the cap. my guess would be > 200 amps. Will a 30 AMP contactor...
  15. C

    Nesting Collets

    https://www.ebay.com/itm/284958774581?hash=item4258ddd535:g:C1YAAOSwI6FjGOKE&amdata=enc%3AAQAHAAAAoOVDxozEJKkVi77L0ddptHc3un7OMMiN4qAw0V9mBQlUBr5GgGFqcJ9x7RBLD7GIfQ6C2tEwBmGjYnsuhAy9GUKlpMoCxGB1fNAbhedichGdGTSO169ytsvWc0Wn6SdNZtrCjgcT9cfEwgZS34EtBMiv8H7LNXTEMgQaT%2Br1KLP4mfSuME4IZAqteWeNymzTT8eiy...
  16. C

    Start Capacitor Contactor Advice Please

    Impedance of a capacitor is 1/2*pi*freq*C, so 0.88 Ohms for 3000 uFd. Baldor data says 600-700% full rated current to start. For 30 HP That's in the 600 Amp range, but you can't get that through the cap. my guess would be > 200 amps. Will a 30 AMP contactor last? CarlBoyd
  17. C

    New structural tube pricing?

    I priced qty 5, 20 Ft, 2x4x3/8 A500 steel tube from Alro online store, 1217 lbs, $2657 US. $2.18 per lb. CarlBoyd
  18. C

    VFD running a air compressor and regenerative effects causing over-current faults?

    Correct, but as JST pointed out regen will cause over voltage, but not over current. If the motor is running faster than the input frequency it is more likely the VFD is slowing down than the motor speeding up. CarlBoyd
  19. C

    Runn and Start Capacitors for Doerr 5HP 1740 RPM motor... Nidec bought Emerson which had bought Grainger which had bought Doerr everyone says buy new

    The tolerance on the capacitors is probably 20% or so, stop overthinking this. CarlBoyd
  20. C

    Leblond Lathe Brake Voltage/Diode Issues?

    Another thought. What you can do with the meter is measure the current through the brake by putting the meter inline, the current will always flow in the same direction. Then measure the resistance of the brake coil. Then multiple the resistance by the current and you should get a much better...

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