• 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 Tobho Mott

  1. Tobho Mott

    Pouring shanks for crucibles

    The welding tips are appreciated! I got the tongs and pouring shank just about finished. Planning to stop by a friend's place after work tomorrow to go over the welds again, and also as much to see how the boulder sculpture. Is coming along (I made several of the molds and helped pour a bunch...
  2. Tobho Mott

    Pouring shanks for crucibles

    Just about done the tongs, Instill want to bend the reins closer enough together to lift or set down the crucible one handed without crushing it if I need to. And some grinding. Going to see my friend who just upgraded his TIG welder situation in a couple days and give my unsightly welds...
  3. Tobho Mott

    Pouring shanks for crucibles

    A bit of progress on the liftout tongs for the A12. Still needs the upright handles. I'll give them a few good whacks and throw them at the driveway a few times to see if I can break them before I trust my plugs-into-a-110v-outlet power-fister fluxcore machine "welding" (emphasis on "my") on...
  4. Tobho Mott

    How Not to Produce a Simple Wood Pattern

    The pattern looks great so far! Jeff
  5. Tobho Mott

    The Great Ontario Foundry Road Trip, 2025

    This guy's muller is a car and a tarp. Talk about working smart not hard! :) Jeff
  6. Tobho Mott

    The Great Ontario Foundry Road Trip, 2025

    Thanks. I'm not sure if Doug is on here, was wondering the same. I'll ask next time I'm talking to him, or maybe someone on here knows him. Petrobond is expensive, no way around it. Luckily like greensand it can be reused again and again if you know how to maintain it. Ingredients for the...
  7. Tobho Mott

    The Great Ontario Foundry Road Trip, 2025

    I drove out to Foundry Supply Source in Milton ON a couple weeks ago to pick up ingredients to make some iron rated greensand. John P. The sales and lab guy gave me a great tour and showed me just about everything they sell there, Wow! I had not been out to Milton since 2015 when it was still...
  8. Tobho Mott

    Casting sand

    Back from Foundry Supply Source (Formerly Smelko Foundry Products Ltd) in Milton ON with greensand ingredients and inoculant needed to finally give iron casting a try. For cast iron, John P. (sales and sand lab guy from the supplier) gave me this recipe: 88% 56GFN sub-rounded silica* 10%...
  9. Tobho Mott

    Cast Bronze Plaques

    A little smaller than you're looking for I guess, but FWIW Village Impressions out of Sarnia makes custom photopolymer stamps and has been friendly to hobby metal casters. You supply an all black and white image and she can make up to I think about a normal sheet of paper sized (last time I...
  10. Tobho Mott

    Hello from Saskatoon

    Ottawa area foundry guy.saying hello! Jeff
  11. Tobho Mott

    Pouring shanks for crucibles

    The Wayne furnace came out of Bill Jurgenson's art foundry in Beamsville after he retired, along with 300# of 20 year old brand new petrobond sand and as much of his investment casting stuff as I could cram into a 16ft rented truck. It served him well for 40 years. He had the furnace set up in...
  12. Tobho Mott

    This is why I have a 3D printer

    There's a 2 year old printed thingiverse PLA impeller in one of my bathroom fans, still chugging along surprisingly. The new fan kit didn't fit in the old hole in the ceiling when it's old motor died, so rather than butcher another drywall job I put the new motor into the old frame. The old...
  13. Tobho Mott

    Pouring shanks for crucibles

    I used to use steel crucibles too when I was running a charcoal furnace. But I can't find a pic of the hooks I used to use to lift and tilt them. These bigger crucibles need custom made tools but I find that a set of 3 fingered fireplace log tongs, off the shelf or perhaps with some slight...
  14. Tobho Mott

    Tips/Techniques Super easy durable cast aluminum match plate patterns

    Really, I was just playing around with production patternmaking here for fun, I'll never cast enough pattern rappers to justify making this permanent production pattern. Or even mounting the patterns on a wooden matchplate for that matter. I have another one made the same way for making sprue...
  15. Tobho Mott

    Tips/Techniques Super easy durable cast aluminum match plate patterns

    The matchplate is sandwiched between the cope and drag and the drag is rammed up first. Meanwhile, the muller is running, processing the sand from the matchplate casting session. Once the drag is made the cope is rammed up, with the sprue pin in place. After the pin is pulled and the cope...
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