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Coating Kaowool

Discussion in 'Forges, Ovens, Kilns, & Salt Pots' started by Grizman, Mar 10, 2017.

  1. Grizman

    Grizman New Member

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    Has anyone had any experience coating kaowool with imperial high-temp stove and furnace cement? Do you paint it on or apply it with a trowel? I'm pretty sure I'm getting ahead of myself(as I often do lol) as I have yet to see the consistency of the cement. Can the cement be thined out with water?
     
  2. John Noon

    John Noon Well-Known Member

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    I hope the answer is yes, just following along
     
  3. dancom

    dancom Dust Maker Best Shop Tool

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    I used a stick.


    [​IMG]
    If it's thick, add a little bit of water.


    [​IMG]
    With a thin stick, I am daubing the cement on.


    [​IMG]
    Waiting for the coating to dry.

    Dan
     
  4. Grizman

    Grizman New Member

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    That looks realy good ! Thanks for the info
    Dan !
     
  5. FORGE

    FORGE Maker of the Year Best Knife

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    Go to Walmart and buy a cheap silicon cake mixing spatula, spray the wool with some water then apply cement with the spatula, I have found that to work the best.
    Every time I get that refractory from Canadian Tire I usually have to take it back because it is so hard you can't spread it. So give the pail a good squeeze and make sure it is soft.
     
    John Noon and dancom like this.
  6. John Noon

    John Noon Well-Known Member

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    I can see the looks on people's faces going pail to pail giving it a squeeze
     
  7. Grizman

    Grizman New Member

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    Haha just like the produce section.... Looking for the ripe one lol!
     
  8. Illuminaughty

    Illuminaughty New Member

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    DON'T DO IT!!!!
    call tuckers pottery in Toronto get the rigidizer liquid. It's a silica colloidal suspended in glycol and water. Its what you should use. I coated mine with that cement your talking about and it just cracked and crumbled and now it's flaking off.
    Your best bet albeit expensive would be 2 coats of the rigidizer and a coat or 2 of itc-100
     
  9. FORGE

    FORGE Maker of the Year Best Knife

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    It depends on what you are using the forge for. If you are welding and using borax in it then you better have some ceramic cement like Super 3000 to coat the wool.
     
  10. Illuminaughty

    Illuminaughty New Member

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    I didn't know that. Could you expand on this a bit more. What effect does the borax have on the lining?
     
  11. FORGE

    FORGE Maker of the Year Best Knife

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    It will eat it like cotton candy and it will disappear.:oops::mad:
     
  12. Grayzer86

    Grayzer86 Active Member

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    Forge is correct. Molten borax eats forge lining like cotton candy in boiling water. Also once its in the forge, it melts and continues eating next time you fire it up again, not just the day you are welding.
     
  13. Illuminaughty

    Illuminaughty New Member

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    Do you mean just the splatter and vapors? I have a brick floor and typically don't make contact with the ceramic fiber lining. Except by accident.
     
  14. Mythtaken

    Mythtaken Staff Member CKM Staff

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    It's the drips and splatters that will do in the lining. That's why many of the guys I know that do a lot of forge welding use a vertical forge. All the melted flux falls into a catch pan away from the forge lining.
     
  15. Illuminaughty

    Illuminaughty New Member

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    I may have to look into building a vertical forge. Any suggestions on available plans for one?
     
  16. Mythtaken

    Mythtaken Staff Member CKM Staff

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    A vertical forge is pretty simple. Basically just a forge like yours, turned upright, with a lid on top and holes for the work cut into the side, perpendicular to the burner. With some ingenuity, you can build a forge that can be used both ways.

    Here's a link to Don Fogg's vertical build. His includes a blower. The images aren't great, but his instructions are easy enough.
     
  17. dancom

    dancom Dust Maker Best Shop Tool

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  18. Mythtaken

    Mythtaken Staff Member CKM Staff

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    Good one, Dan. I forgot about Big's forge. Maybe I need more RAM.
     
  19. Illuminaughty

    Illuminaughty New Member

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    Thanks guys. This will definitely be the next build once this one need a refining. Which will be soon haha that firebrick keeps turning into glass on me. And your right about the borax lol.
     
  20. Slannesh

    Slannesh Active Member

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    Probably more of a question for Dan or Forge, but how is the refractory cement holding up?

    I've finally dipped my toes into forge welding and my old refractory doesn't hold up to the heat, It's gone all melty on me so I need to either re line my existing forge or get off my butt and build my bigger one.

    I have the Kaowool and have made some sodium silicate that I could use as a rigidizer, but I also have the Imperial Hi Temp cement you used as well. Planning on using hard firebrick for the floor so I can remove it and replace as needed but wanted to know how the other stuff was holding up?
     

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