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  • Spring meet up in Ontario, April 6/2024. NEW LOCATION See Post #31 Discussion NEW LOCATION

Recent content by Johnwa

  1. Johnwa

    Can this single phase 120v motor's direction of rotation be reversed?

    There may be enough connections but it’s a big MAYBE. Power in goes to the top and bottom terminals. They COULD have hidden connections behind the insulating plate. The reversible winding would then be the two black leads coming from the interior of the motor.
  2. Johnwa

    Tips/Techniques Mill hold downs

    They are “toe clamps”
  3. Johnwa

    Tips/Techniques Mill hold downs

    Cool video, no loud music just the sweet sound of milling and drilling!
  4. Johnwa

    Tool N2M engravers ball vice

    I don’t know if you’ll find a 3/16” socket. Everything I’ve seen starts at ¼” Clock keys come in a number of mm sizes that span 3/16”. Here’s a table of standard sizes. https://www.quicktest.co.uk/blogs/jewellery-and-horology/conversions-clock-and-watch-key-winders
  5. Johnwa

    Another Calgary local

    Welcome from SW Calgary.
  6. Johnwa

    Tool N2M engravers ball vice

    A clock key might get you going.
  7. Johnwa

    Rotary encoders

    About a year ago I was testing the positional accuracy of micro stepping stepper motors. For the first test I used a magnetic encoder with a magnet glued to the end of the motor shaft to measure the step position. The results weren’t great but then I wondered whether it was the stepper and/or...
  8. Johnwa

    All Kennedys are now onsite !

    @ChazzC @Dabbler Thanks for the info. Now I have a better idea of what to look for. i do have a brown/bare metal Kennedy box and yes it is filled with various measuring stuff.
  9. Johnwa

    All Kennedys are now onsite !

    Ok, I have to ask. Where does Kennedy rank amongst boxes?
  10. Johnwa

    SM change gears - Imperial 1120 for metric gears

    For low tooth count gears it isn’t bad but after cranking the mill back and forth for an hour and getting 99 ½ teeth the fun dissapears.
  11. Johnwa

    SM change gears - Imperial 1120 for metric gears

    I don’t know if you could make these work but the prices aren’t bad. I’ve ordered from RDGtools and was happy with them. https://www.arceurotrade.co.uk/Catalogue/Machine-Spares/SC4-Lathe-Spares/SC4-CG127-Change-Gear-127T...
  12. Johnwa

    Adding An Encoder To A Dividing Head?

    it would be a fairly simple standalone project. This video shows how to interface a linear scale. The rotary encoder should have the same signals.
  13. Johnwa

    Round column mill Calgary $1300

    https://www.facebook.com/marketplace/item/368695322719770/
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