• Scam Alert. Members are reminded to NOT send money to buy anything. Don't buy things remote and have it shipped - go get it yourself, pay in person, and take your equipment with you. Scammers have burned people on this forum. Urgency, secrecy, excuses, selling for friend, newish members, FUD, are RED FLAGS. A video conference call is not adequate assurance. Face to face interactions are required. Please report suspicions to the forum admins. Stay Safe - anyone can get scammed.
  • Several Regions have held meetups already, but others are being planned or are evaluating the interest. The Calgary Area Meetup is set for Saturday July 12th at 10am. The signup thread is here! Arbutus has also explored interest in a Fraser Valley meetup but it seems members either missed his thread or had other plans. Let him know if you are interested in a meetup later in the year by posting here! Slowpoke is trying to pull together an Ottawa area meetup later this summer. No date has been selected yet, so let him know if you are interested here! We are not aware of any other meetups being planned this year. If you are interested in doing something in your area, let everyone know and make it happen! Meetups are a great way to make new machining friends and get hands on help in your area. Don’t be shy, sign up and come, or plan your own meetup!

Recent content by Johnwa

  1. Johnwa

    Craftex lathe CT043 thread chase gear

    Look on the Grizzly site a similar lathe. They seem to be able to get parts. Busybee does sell a complete thread dial for CX704.
  2. Johnwa

    Calgary summer meetup 2025 RSVP

    I’m planning on being there.
  3. Johnwa

    Help from the electronic gurus

    All you ever wanted to know! https://cxem.net/pitanie/5-366.php LOL I think it is in Russian but could be Greek? I searched for M34. 0305LN-00-0
  4. Johnwa

    2025 Calgary meetup dates

    John I will take a a 10mm if there are any left. John
  5. Johnwa

    Powerfeed for Zay7045FG Mill

    There are some YouTube power feeds using wiper motors. This link is just one of many.
  6. Johnwa

    Machine Tools Warehouse MD-003

    There is lots of Z travel! But I kept bumping into the xy travel restrictions (5x11???j. I think you can get a larger table size now. Other than the size I would say it was a Very good mill...
  7. Johnwa

    Machine Tools Warehouse MD-003

    I had a MTW ZAY7025fg mill. The z axis crank is at the bottom right. It can just be seen in the picture. The gears ran fairly quite.
  8. Johnwa

    LF: Model Engineer & Workshop 2001 Autocollimator project.

    @Gennady Even after skimming the MEW articles I still have no clue what this device is good for! Can you provide a “grade 6” explanation?
  9. Johnwa

    molten metal temp

    I did find similar numbers ranging from about 0.04 to 0.19 depending upon the alloy. These were all for solidified aluminum. This morning I did find this. https://www.williamsonir.com/aluminum/
  10. Johnwa

    molten metal temp

    As far as I’ve been able to find out the non contact pyrometers won’t work with aluminum. They depend on much IR is emitted but molten aluminum IR emission is remarkably low.
  11. Johnwa

    CA-ON Bentone 34 or other “organophilic” clay?

    @Ogmios Forge what are you using for a muller? John
  12. Johnwa

    John W’s tool grinder

    Dan I used thin wall aluminum tubing filled with sand for cores. The tubing will end up being bored out. John
  13. Johnwa

    John W’s tool grinder

    Peter I have a large stash of aluminum. Most of it is is from Toyota transmission cases. Factory castings are the correct alloy and don’t require any additives like silicon or copper. I used the prints like normal wood patterns so no burn out. The molds are rammed green sand. The thickest...
  14. Johnwa

    John W’s tool grinder

    Here’s a pic of a failed casting.
  15. Johnwa

    John W’s tool grinder

    This picture is a closeup of the rocking lever casting. I used a 3D printed pattern with no attempt at post processing. It didn’t pull cleanly from the sand but otherwise was fine.
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