• 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 Calgary Area Meetup is set for Saturday July 12th at 10am. The signup thread is 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

    10th Annual Rust Junkie Fest

    Anyone else coming this year? I'm here early, people are still setting up but it's looking to be a good day. Jeff
  2. Tobho Mott

    Iron Casting

    Day 2 with the new artist client. We used the heavy duty oil fired furnace that was actually built with iron casting in mind this time. Takes longer to heat up for the first melt of the day but holds up a lot better over time and becomes more efficient on subsequent back to back melts because...
  3. Tobho Mott

    Giant metal boulder sculpture (art casting with sand molds)

    The annual sculpture garden celebration was a nice day. Hot and sunny and not a lot of shade but it was cool to see the sculpture in place. Sculptor and foundry guy for scale. I also got to meet Roch Smith, who does lost wax casting and runs the foundry at York U. Autocorrect REALLY wants...
  4. Tobho Mott

    Giant metal boulder sculpture (art casting with sand molds)

    Looking forward to the gallery event tomorrow. It ends at 6pm, so unfortunately I won't get to see it all lit up at night, but they did post some footage at least: Then it's back home for an iron pour on Sunday with a new to me artist from Montreal. :) Jeff
  5. Tobho Mott

    Iron Casting

    Artist lady from Montreal stopped by on Wednesday for an iron casting session. 7 back to back iron melts in a day is a lot, it's hard to explain how hot it gets. I don't think it's a good idea to go that hard again, for the sake of both my body and my wood framed casting shed...
  6. Tobho Mott

    Lost foam aluminium casting issues

    FWIW I just got a tip from a friend in Montreal that you can buy the same top quality crucibles from Asbury Wilkinson in Chateauguay as they have at Foundry Supply Source in Milton ON, for as much as 40% cheaper. Edit -John Papaionnou, the sales guy in Milton, is a great guy to deal with, very...
  7. Tobho Mott

    Iron Casting

    Awesome! If you can add a couple degrees of draft, fillet/radius any sharp corners, and add any machining allowance needed, I'd be happy to give it a try. Send me a DM if you want to try and set something up. My weekends in July are pretty slammed this year but for this kind of thing I can...
  8. Tobho Mott

    Iron Casting

    I've been waiting years for my father in law to realize he's never going to use his old pottery kiln again that's been used as a shelf in his basement since the late 80's... :) It should be possible to use a home heating furnace burner with a bit of tinkering if you stick to burning...
  9. Tobho Mott

    Lost foam aluminium casting issues

    Those wheels came out great, Gippeto! :) I cheated. Made mine out of cheap set of 4 double ended cake decorating ball tools. Close as I can measure they range from 5/32" to 3/4" in diameter. I just had to cut the shafts in half and make some nicer handles for them. Well I didn't HAVE to...
  10. Tobho Mott

    Iron Casting

    No nozzle at all, it's a gravity fed drip injector that requires a preheated furnace, not an atomizer that requires compressed air or a fuel pump. I use a little propane to preheat, and once the furnace is glowing hot enough to vaporize oil drips I ease the oil on and the gas off and add more...
  11. Tobho Mott

    Lost foam aluminium casting issues

    Kelly Coffield has lost foam all figured out, +1 for that, you can't go wrong by following the methods he's documented in his videos and many forum posts on THF. Ie..dry unbonded sand packed by vibration, top gating, sufficient head pressure, and a dip coat that's barely thick enough to be...
  12. Tobho Mott

    Iron Casting

    Following up after buying ingredients for iron rated greensand here: https://canadianhobbymetalworkers.com/threads/the-great-ontario-foundry-road-trip-2025.15069/ And mulling up ~450 pounds of the stuff... https://canadianhobbymetalworkers.com/threads/casting-sand.4444/post-195510 And...
  13. Tobho Mott

    How Not to Produce a Simple Wood Pattern

    Nice work on the pattern! There's a foundry guy from Sarnia who used to post now and then on a couple of foundry forums as Foundry Joe and Joe C... I wonder if they know each other. Patternmaking-related, (I may have mentioned this elsewhere) Joe's wife runs Village Impressions, a rubber...
  14. Tobho Mott

    Giant metal boulder sculpture (art casting with sand molds)

    And off it goes to the Oeno gallery in Prince Edward County... With 2 of us and David's gantry crane and genie lift, getting the heavy base, cap assembly, and stone blocks loaded into his van yesterday after work was pretty easy I hope to be able to make it to the gallery for the unveiling...
  15. Tobho Mott

    Giant metal boulder sculpture (art casting with sand molds)

    I'd love to cast more functional parts. Started my casting hobby in 2013 with Dave Gingery's 'build your own metal shop from scap' book series, but loved making molds so much when I got done with book 1 (the charcoal furnace book), instead of starting book 2 (build the cast aluminum lathe) I...
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