• 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

    The Hoffman Hudson Story - An All Canadian Design

    Hi All, So how many of these Hoffman live steam locomotives exist completed or partially completed? While I have never been able to determine the exact number, I would estimate around 50 or so with 25 being constructed in Canada and 25 in the USA and elsewhere. Carl said that he sold many...
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    How Not to Produce a Simple Wood Pattern

    Hi All, The Hoffman Hudson single steam brake cylinder pattern, casting and machined cylinder made by me decades ago as shown on the Hoffman main drivers brake print but never produced by Hoffman. The brake system as drawn is incomplete and cannot work and will have to be modified (many new...
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    The Hoffman Hudson Story - An All Canadian Design

    Hi All, There is a very long history to all of this truly Canadian design so let us get started. It goes all the way back to the 1930's. If you go to the IBLS website (the International Brotherhood of Live Steamers) of which I am a member, I wrote about how Carl Hoffman from Kitchener, Ontario...
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    How Not to Produce a Simple Wood Pattern

    Hi All, Pushing on to where I am now. The two cylinder pieces were first glued to the base block cutouts with some white glue letting the glue dry for about 24 hours and then the contour fillets were added in small thin incremental layers (approx. 4 in total). I let the filler dry for at least...
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    How Not to Produce a Simple Wood Pattern

    Hi David, This will be the new double steam or air brake cylinder pattern for my 3/4" scale Hoffman NYC Hudson live steam locomotive. I now have the design for this and Carl Hoffman never had the casting for it. The original Hoffman brake cylinder drawing shows a single cylinder only which is...
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    How Not to Produce a Simple Wood Pattern

    Hi All, To finish the cutouts in the base block, I switched to a boring head tool as seen in photo 35. To ensure everything remained square in both planes, I used the setup shown in photo 36. Afterwards, I checked the accuracy of the work and to my surprise the vernier height gauge shows both...
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    How Not to Produce a Simple Wood Pattern

    Hi All, Well, it started off very badly. As I had the right (odd size commercial hardwood dowel of approx.1-3/32" dia) I said right, I will use that for the two cylinder pieces. So, I got to the stage shown in photo 30 when I started to measure things more closely and I discovered that this...
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    Best Product to Use for Fillets and Curves in a Simple Aluminum Pattern

    Hi All, Many thanks for all of your very helpful comments on this simple pattern making job. I really needed the education in this area and for all future projects will go the route you have suggested. But, being as stubborn as ever, I decided to stick with the devil I know for the time...
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    Best Product to Use for Fillets and Curves in a Simple Aluminum Pattern

    Hi Peter, Attached is the drawing of a very similar part. I just want to make a fully male 3 degree taper mold where the flat bottom surface is attached to one side of a matchplate and the male outline is pushed into the sand to create the female cavity into which the molten metal will be...
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    Best Product to Use for Fillets and Curves in a Simple Aluminum Pattern

    OK here is my crude sketch of what I am trying to do. The pattern is a uniform x-section and will be 1-1/16" long, 3" wide at the base and 1-1/4" high. Is this feasible or am I out to lunch? I want to keep it as simple as possible so that I don't need to use both sides of a matchplate.
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