Recent Content by Tobho Mott

  1. Tobho Mott
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    New member - Ontario, Canada

    Hey, wow! Yup, I'm just outside Ottawa. Rocco's right, I don't have any use for your chips. But maybe we can help each other out sometime as...
    Post by: Tobho Mott, Jan 13, 2021 at 2:59 PM in forum: New member introductions
  2. Tobho Mott
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    Cast-Iron Furnace Build Using Partially 3D-Printed Molds

    Looks tippy to me too, like it could trip over a pebble on your driveway while being moved into position, or worse, while it's hot as you roll it...
    Post by: Tobho Mott, Jan 12, 2021 at 5:12 AM in forum: Furnaces and their construction
  3. Tobho Mott
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    New parts for a 100 year old loco

    So cool. Great stuff OddDuck! Jeff
    Post by: Tobho Mott, Jan 11, 2021 in forum: Sand Casting
  4. Tobho Mott
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    Propane tank/fueled furnace build

    You could even go with a 4" vent. My 1st furnace had a 3" vent (still does) and my little muffin ingots were forever just a little too wide to...
    Post by: Tobho Mott, Jan 11, 2021 in forum: Furnaces and their construction
  5. Tobho Mott
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    New high speed blower modifications

    Looks great and should make setting up a little easier. Nice... You ought to attach a sail, positioned to catch the blower's output. Then...
    Post by: Tobho Mott, Jan 11, 2021 in forum: Furnaces and their construction
  6. Tobho Mott
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    Cast-Iron Furnace Build Using Partially 3D-Printed Molds

    I cast my big furnace's lid like that, if I understand you correctly. The castable refractory lid has a raised 1" thick wall around the vent...
    Post by: Tobho Mott, Jan 10, 2021 in forum: Furnaces and their construction
  7. Tobho Mott
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    Cast-Iron Furnace Build Using Partially 3D-Printed Molds

    Hopefully you have enough clearance; if it doesn't stick, it should be good for preventing flames leaking out and wasting heat. Test it before...
    Post by: Tobho Mott, Jan 9, 2021 in forum: Furnaces and their construction
  8. Tobho Mott
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    1/4 scale '41 Willys

    Wow, close one. My parents live in forest fire country in the Okanagan valley of British Columbia and have come close to having to evacuate on...
    Post by: Tobho Mott, Jan 9, 2021 in forum: Other metal working projects
  9. Tobho Mott
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    Cast-Iron Furnace Build Using Partially 3D-Printed Molds

    Thanks for finding the link Kelly. Now tell us how you really feel! ;) Apologies, it was not my intention to reignite old grudges best left...
    Post by: Tobho Mott, Jan 9, 2021 in forum: Furnaces and their construction
  10. Tobho Mott
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    Cast-Iron Furnace Build Using Partially 3D-Printed Molds

    That looks great, I doubt you will feel a need for more insulation unless you compressed the blanket more than it appears in your pic. I run my...
    Post by: Tobho Mott, Jan 9, 2021 in forum: Furnaces and their construction
  11. Tobho Mott
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    Castable pour questions

    I don't recall how long I waited, but IMO the waiting to let it cure and dry out before firing it is more crucial. It might have been a couple...
    Post by: Tobho Mott, Jan 5, 2021 in forum: Furnaces and their construction
  12. Tobho Mott
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    Hello from Ontario

    I used a 2600F rated ceramic fiber blanket for both my builds, at least the innermost layer. The Red Dwarf (satanite furnace) has 2300F blanket...
    Post by: Tobho Mott, Jan 4, 2021 in forum: New member introductions
  13. Tobho Mott
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    Castable pour questions

    That's how I did mine. Plus another pour for the lid, which I placed on top of the just-poured top ring (with a sheet of plastic between them) to...
    Post by: Tobho Mott, Jan 3, 2021 in forum: Furnaces and their construction
  14. Tobho Mott
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    Carbon Monoxide Poisoning

    Yikes, that is really scary! Glad to hear you made it out. Fear of CO kept me melting and pouring outdoors for several years, and that's the...
    Post by: Tobho Mott, Jan 2, 2021 in forum: General foundry chat
  15. Tobho Mott
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    Tobho's Water Bath Bulk Scrapper for Aluminum

    Yes, it's just a cylinder at this point. Works great, but don't put more than 3 wheels in at once or the whole rig may tip over when they begin...
    Post by: Tobho Mott, Jan 1, 2021 in forum: Furnaces and their construction