• Spring 2024 meetup in Calgary - date Saturday, April 20/2024. discussion Please RSVP Here to confirm and get your invitation and the location details. RSVP NOW so organizers can plan to get sufficient food etc. It's Tomorrow Saturday! you can still RSVP until I stop checking my phone tomorrow More info and agenda
  • We are having email/registration problems again. Diagnosis is underway. New users sorry if you are having trouble getting registered. We are exploring different options to get registered. Contact the forum via another member or on facebook if you're stuck. Update -> we think it is fixed. Let us know if not.
  • Spring meet up in Ontario, April 6/2024. NEW LOCATION See Post #31 Discussion AND THE NEW LOCATION

Recent content by mikefrost

  1. M

    Tool Optical Centre punch.

    Reading this post was great, until the end, when I found that I have NOT received training on how to centre punch "properly". I just try to get it as close as I can , but seldom get it spot on. Any chance of a description of how to do it "manually" ? Mike
  2. M

    Tool Optical Centre punch.

    It wasn't clear to me what the (plastic? ) material is. And does making the 2 ends of it slightly round create the magnification lens ? I think it does, but roughly how much rounding is needed. I scrolled back and forth on that video several time trying to ge answers, but to no avail. Looks...
  3. M

    Open House - David Dunlap Observatory Maker Space

    Opportunity to see / visit the YLab Maker Space at the Observatory https://www.meetup.com/ylab_at_DDO/events/285377328/ Adults only visitors I found the folks there to be really skilled at instructions on the laser XY cutter and the new CNC machine Mike
  4. M

    Churchill Cub Mk III lathe for sale

    Congrats on selling it Mike
  5. M

    Planning a manufacturing class for coworkers

    I really like the idea of what you are doing. Engineers will have learned pV=nRT. So a fire piston would be a great way to make someting "practical" Takes theory and makes it practice including safety. Planning, measuring, machining are all involved, and the results are immediately evident...
  6. M

    Churchill Cub Mk III lathe for sale

    Rauce I'd like to see the video tnx Mike
  7. M

    Churchill Cub Mk III lathe for sale

    Looks like a machine that I could use. I presently have a 13 x 48 South Bend that is a bit to large for my space. Now if I could find a new home for the South Bend ( has 2 HP , VFD, 3 jaw, 4 jaw, steady rest .etc) for $1200, I'd take the Churchill. Mike ( in Toronto)
  8. M

    Spot Welder at PA

    Spot welding is resistance welding. The idea is that you have a path for the electric current that is very very low resistance, i.e. the transformer secondary and the heavy copper bars / tip. The piece to be welded is (supposed to be) much higher resistance i.e. 2 thin pieces of sheet steel...
  9. M

    FS Bench top Cataract Lathe

    OK, to see if there is any interest from lurkers or others, I'm adding my early bench top, shop made milling machine to the deal for the Hardinge Cataract lathe. Again, it is a modest machine, but with some patience and care, does good work. It uses the electric drive from a lawnmower, with a...
  10. M

    Toronto

    Toronto
  11. M

    Benchstar 16 Spindle

    That's good news, I think. Now, all you have to do is find some one to mount in their lathe, in a 4 jaw chuck, and take a skim cut to clean up the taper so it is straight with the rest of the shaft. Using blue dye you will be able to make any final adjustments to the taper, and a final step...
  12. M

    Benchstar 16 Spindle

    How badly is the bend? Is the bend in the middle or at the drill chuck end? Replicating the shaft is a bit of a challenge because of the splines. It might be possible to machine out the "bend' if it's at the drill chuck end. If the bend is in the middle, a few carefully calibrated whacks with...
  13. M

    Bench Top Lathe - help needed

    Help to find it a new home, that is. This is my lathe from years ago when I got started. It is a Hardinge Cataract 7 in lathe. It was a very good lathe to learn on. I have upgraded up considerably over time ( VFD with remote control box, new motor, new flat belt, wood turning capability etc) ...
  14. M

    FS Bench top Cataract Lathe

    This is the lathe I started out on. It is time for it to have a new home. It is complete and in working order, ready to go. Background is here http://www.lathes.co.uk/cataract/ The bearings are good, I added a VFD ( 110V single phase) with a new 3 phase motor so I had variable speed. Includes...
  15. M

    Have you sold the collets?

    Have you sold the collets?
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