• 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 Ontario GTA West area meetup is planned for Saturday April 26th at Greasemonkeys shop in Aylmer Ontario. If you are interested and haven’t signed up yet, click 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 12- carbon

  1. 1

    In Need of: machining small component

    Big thanks to @John Conroy for turning this around so fast. After some modifications to simplify the milling it became a much simpler part to fabricate.
  2. 1

    In Need of: machining small component

    Photo of the component mounted to the bike.
  3. 1

    In Need of: machining small component

    Its a non standard chain running on non standard components, and needs to be held at a constant fixed length.
  4. 1

    In Need of: machining small component

    It's going to be a adjustable tensioner for a chain drive on a electric bike.
  5. 1

    In Need of: machining small component

    Thanks for the suggestions. Would the end areas need more thickness than the side areas? I designed it with the thickness being uniform around the fastener. The reason for the counterbore on the bar side was that to leave me with options to use a lock nut on the back side if threading wasn't an...
  6. 1

    In Need of: machining small component

    Oops , looks like the pdf doesn't show, makes you download. I've screen captured and attached below for dimension reference. Also took a couple pics of the 3D printed part in hand. I would think this piece would just need a mill and could be made from 1 piece of stock. It will be a sliding...
  7. 1

    In Need of: machining small component

    I have drawn up a component and tested it by printing a 3D version. Seems to work for what I need but now need it made from some type of aluminum. Please see my drawing of the part. I've also linked a 3D images. Remember, this is amateur hour... excuse my drawing/lack of convention. lol Please...
  8. 1

    In need of: machining small component

    I have drawn up a component and tested it by printing a 3D version. Seems to work for what I need but now need it made from some type of aluminum. Please see my drawing of the part. I've also linked a 3D images. Remember, this is amateur hour... excuse my drawing/lack of convention. lol Please...
  9. 1

    Help understanding machining tolerance

    I have an electric motor on my mountain bike. The cycloidal gear reduction was damaged and I needed to mate a new reduction unit(planetary) to the said motor. Which means I need to create a brand new housing for the motor onto which the new planetary reduction can mate. That's what this piece is.
  10. 1

    Help understanding machining tolerance

    Great reply, thanks for the insights! Now to my fundamental misunderstanding. How should I be interpreting a quoted tolerance of +/-X.XXmm when it is quoted? Is that the tolerance between to points 10mm apart 100mm apart? And how does that change with a whole number of features on a certain...
  11. 1

    Help understanding machining tolerance

    Thanks for the link! But what I it still dont understand is if the machining tolerance is for example 0.02mm Then will my part have a possible "growth" or "shrinkage" of 0.02mm/mm or 2% across a critical dimension? 2% difference across the bolt hole mounting locations will put me out almost...
  12. 1

    Help understanding machining tolerance

    In my case this piece will only be bolting up to mate with a different component. Nothing like you describe for a shaft/bore scenario.
  13. 1

    Help understanding machining tolerance

    To start, I'm a hobbiest amateur. I have a component that I have modeled. I'm looking to have this sent off and machined but I'm not sure I understand machining tolerances etc. There are a few things like the 4 peripheral mount holes, central mount holes, center bore that need to be...
  14. 1

    Edmonton- Small lathe/milling work; Advice, insight, recommendation?

    @John Conroy Big thanks John for your efforts! Also, thanks to the group and those that had a look in on the thread! Was a pleasure meeting you and getting a glimpse of your shop. Turned out nicely! Tip: Being a very strong magnet I was initially a bit worried about how I would clean the...
  15. 1

    Edmonton- Small lathe/milling work; Advice, insight, recommendation?

    John, I would be grateful, PM sent.
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