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  1. 509Maker liked Al2O3's post in the thread New oil burning furnace build.

    The sizes on the cardboard tubes are all over the place because they nest them to conserve space for shipping. Nominal sizes are almost...

    Jun 23, 2024 at 8:52 PM
  2. Al2O3 replied to the thread New oil burning furnace build.

    All the dense castables I know of are setting formulas. In fact, some limit the recommended casting thickness due to exothermic...

    Jun 23, 2024 at 5:09 PM
  3. Al2O3 replied to the thread New oil burning furnace build.

    The sizes on the cardboard tubes are all over the place because they nest them to conserve space for shipping. Nominal sizes are almost...

    Jun 23, 2024 at 5:01 PM
  4. Mark's castings liked Tobho Mott's post in the thread New oil burning furnace build.

    The dense castable I used in my oil furnace is 3200F rated Unicast-70, not Mizzou, but from what I've seen in builds that did use...

    Jun 23, 2024 at 4:19 PM
  5. Tobho Mott replied to the thread New oil burning furnace build.

    The dense castable I used in my oil furnace is 3200F rated Unicast-70, not Mizzou, but from what I've seen in builds that did use...

    Jun 23, 2024 at 3:13 PM
  6. Mark's castings liked Tobho Mott's post in the thread New oil burning furnace build.

    I backfilled my Sono tube inner bore form with sand, as extra anti tube-buckling insurance on top of cling-wrapping the outside of it,...

    Jun 23, 2024 at 2:30 PM
  7. Mark's castings replied to the thread New oil burning furnace build.

    I'm wondering if commonly available American dense castables have enough strength to cast a liner the way I've been doing?. I'd...

    Jun 23, 2024 at 2:30 PM
  8. Mark's castings replied to the thread New oil burning furnace build.

    It's interesting to note the different concrete building methods: the 12" PVC tube I have was an offcut from a building site where it...

    Jun 23, 2024 at 2:17 PM
  9. Tobho Mott replied to the thread New oil burning furnace build.

    I backfilled my Sono tube inner bore form with sand, as extra anti tube-buckling insurance on top of cling-wrapping the outside of it,...

    Jun 23, 2024 at 1:59 PM
  10. Tobho Mott liked Mark's castings's post in the thread New oil burning furnace build.

    So 48 hours after the bore refractory was cast, I flipped it over onto a XPS sheet to cushion the edges and rolled it out of the way and...

    furnace bore plastic.jpg furnace bore plastic 2.jpg furnace bore plastic 3.jpg PVC tube 2.jpg Jun 23, 2024 at 1:46 PM
  11. HT1 replied to the thread New oil burning furnace build.

    Ive never had that issue ( failure) but im sure its a possibility especially if your refractory is too wet V/r HT1

    Jun 23, 2024 at 12:21 PM
  12. HT1 liked Al2O3's post in the thread New oil burning furnace build.

    The IDs of those tubes are waxed, water resistant, and self-releasing. The ODs are not and if not sealed can become weakened and...

    Jun 23, 2024 at 12:20 PM
  13. Tops liked Al2O3's post in the thread New oil burning furnace build.

    The IDs of those tubes are waxed, water resistant, and self-releasing. The ODs are not and if not sealed can become weakened and...

    Jun 23, 2024 at 9:34 AM
  14. Tops liked HT1's post in the thread New oil burning furnace build.

    dont bother just burn them out much easier then trying to remove V/r HT1

    Jun 23, 2024 at 9:34 AM
  15. Al2O3 replied to the thread New oil burning furnace build.

    The IDs of those tubes are waxed, water resistant, and self-releasing. The ODs are not and if not sealed can become weakened and...

    Jun 23, 2024 at 8:40 AM
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