• 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!

Search results

  1. pdentrem

    Telescope secondary mirror support system

    Printed a couple of mirror clips. They will hold the mirror from flopping out when close to the horizon. Pierre Short YouTube video. It may not be live until midnight?
  2. pdentrem

    Telescope secondary mirror support system

    Whippletree or whiffletree are used in agriculture and also lifting loads.
  3. pdentrem

    Telescope secondary mirror support system

    Since the sky is smoked filled, I continue to work on my telescope build. Made a couple whiffletrees for the support of the 13.1” telescope mirror. Wire EDM cut the crescents and popped a hole for the pivot bearing on my lathe. Next drilled the ends for 5mm threaded shoulder bolts to hold the...
  4. pdentrem

    Telescope secondary mirror support system

    Finished the whiffletrees last night. I have to fit the slots in the 3D printed light/dew shield and make a couple threaded pins to hold them at the right height. Pierre
  5. pdentrem

    Tips/Techniques Show your shop related 3DP

    QUOTE="PeterT, post: 199809, member: 22"] This is an example of something I've been doing more as of late. When you want to fit something with some degree of snugness but the printer tolerance and/or part tolerance can vary a bit so it becomes a trial & error repetition. Sometimes its easier to...
  6. pdentrem

    Telescope secondary mirror support system

    Also mounted the carbon fiber plate and the focuser in the upper section. Pierre
  7. pdentrem

    Telescope secondary mirror support system

    A bit more this morning. Counterbored the start holes and sized for the bearings. Now to drill the ends for the other bearings. Pierre
  8. pdentrem

    Telescope secondary mirror support system

    The mirror was glued a week or so ago. Now I have received the carbon fiber plate to mount the focuser which sits in the grooves that are somewhat visible in the upper section. It will fit in between the two hoops looking to the secondary mirror. I also have the two whiffletrees cut from 1/2” Al...
  9. pdentrem

    Looking into 3d printing

    Sorry, I miss wrote. It was Dabbler not Sasquatch who saw the Prusa XL on his swing through this area. Opps Pierre
  10. pdentrem

    Looking into 3d printing

    One thing for sure, is that the machines are maturing and therefore more plug and play unlike 20 years ago. Pierre
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