• 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...

    To continue with the build. Producing sharp internal 90 degree corners is not all that difficult IF you know a few tricks. The problem is that at a corner you are cutting on two surfaces simultaneously which suddenly increases the force on the cutting tool tip from two directions. This can and...
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    How to Produce A (Deep/Narrow) Precision Slot

    Hi All, Guys (and ladies)(I guess there are a few). I don't know why I am telling you all of my secrets. Nobody taught me this; it was only learned through the school of hard knocks. It is probably one of the most difficult of all machining operations. There are many ways to do it wrong and...
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    It Looks So Easy and Straightforward ON Paper But...

    Hi All, Yes, I noticed that after I posted the link. Try instead Blogger.com Everlasting Blowdown Valve. I have updated the link in the previous thread.
  4. C

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

    Hi All, OK, here are some photos of the real deal. They all happen to be for live steam locomotives but the first two photos are by far the closest to what the full size Okadee boiler blowdown valves look like. They are for 1.5"/1.6" scale model live steam locomotives and were made in lost wax...
  5. C

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

    Hello All, Yes, I will get to what you are asking about. The square corner flat valve face was done with a boring tool which had to be modified. I have D bits but they are shop made and are not produced from HSS which is what I wanted for this job. I will use a D bit to produce a true circular...
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    It Looks So Easy and Straightforward ON Paper But...

    Hi All, Maybe I complain too much but... Here is something which looks so easy and straightforward on paper but when you get into it... To set the scene. The drawing is of an "Everlasting" (Okadee type) live steam locomotive boiler blowdown valve (it happens to be in 3/4" scale) and the ones...
  7. C

    A Boring Bar Made from an Allen Key

    Hi All, One can, if needed, make a quick boring bar from an any size Allen key. The one shown in the photo is one I made from an 1/8" key. As usual, there are some limitations as Allen key stock is normally made from high carbon steel which was used as a cutting tool steel before HSS was...
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    How to Slice a Thin (or any thickness) Piece from a Short Large Diameter Cutoff

    Hi All, With the price of metal today (any metal) I want to be able to use every last piece of metal which I have. Over the decades, one accumulates a lot of short pieces of bar which cannot be cut further in a regular cut off bandsaw without modifying it heavily as this is just not what any...
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    Making a Single Tooth Square Broach

    To finish. I think that the photos say it all.
  10. C

    Making a Single Tooth Square Broach

    Now to the actual making. I am presuming that the broach is being made from drill rod and is hardened and tempered after forming. The series of photos I think is self explanatory and shows what I did to make one. Only one note, it is important to make the 10-15 degree "hook" indentation as shown...
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