• 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!

Search results

  1. C

    It Looks So Easy and Straightforward ON Paper But...

    Hi All, Machining the stainless steel valve spindles. The stainless which I have was not marked but it was not 303 (extremely machinable) or 316 (difficult to machine) and so likely it was 304. I will only show the machining of the two squares on the valve spindles which is the most...
  2. C

    Collets

    If you are talking about collet brands the best are Hardinge or Royal or Royal/PBA or Crawford/PBA (PBA = Pratt Burnerd Association). I use them all the time in my lathe, milling machine and most of my machine tool accessories. I wouldn't be without them. They are both fast and accurate but the...
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    It Looks So Easy and Straightforward ON Paper But...

    Hi All, The valve inner assemblies (consisting of the the valve arm, the valve and the backing spring) are now complete. The last parts involved some interesting machining. The valve backing springs are specified to be 5/32" OD and only 5/64" long! There is no chance of being able to...
  4. C

    The Equivalent North American Meaning of a Bare Fit

    Hi All, LBSC in the construction article on the boiler blowdown valves I am making uses the term "a bare fit" several times in the text. Does this mean a close fit or...? Is this an English/Scottish term for all of you having a UK background?
  5. C

    Missing Images....

    Hi Susquatch, As of today, September 13th, Some of the photo images are still missing on "It Seems so Straightforward on Paper" in Your Active Projects, some images are seen in small size in "Attachments" but when you click on them, they only show half photos and some when you click on them...
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    It Looks So Easy and Straightforward ON Paper But...

    Hi All, Finishing a valve by contouring the outer (peanut) shape. LBSC says to do this by filing but I couldn't do it this way if my life depended upon it! Precision filing is a lost art for me and even using a die filer, I couldn't do it this way either as the part, at this stage, is so small...
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    It Looks So Easy and Straightforward ON Paper But...

    Hi All, The valve flat bottom drilling and depth check. Do not try and drill directly with the flat bottom drill as a drill ground this way will jump all over the place. A flat bottom drill is just used to produce a flat surface on the end of a drilled hole. So, the sequence of operations...
  8. C

    It Looks So Easy and Straightforward ON Paper But...

    Hi Dabbler, Yes, I know but I didn't remove them. They are gone for me also. Apparently, it is a server update issue now being looked into.
  9. C

    It Looks So Easy and Straightforward ON Paper But...

    Hi All, Just for completeness, there are other ways of "broaching" miniature square holes. On Youtube: 1- Clipspring Spare Parts # 13, 2- Joe Pie Mini Milling Machine The Three Ball Crank Arm, 3- Joe Pie Can you Grind Tools on a Milling Machine? YES--Take a Look!, 4- Course You Can How to Make...
  10. C

    It Looks So Easy and Straightforward ON Paper But...

    Hi All, The machining of the valve. I knew this part, though it looked so simple on paper, was going to present me with a lot of machining difficulties. It had two internal features, a 7/64" through square hole and a flat bottom circular hole. The flat bottom hole I can deal with as, in the...
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