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Making molds and casting in place - Forno Bravo Forum: The Wood-Fired Oven Community

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Photo Galleries are back! Instructions below.

Dear forum users,
Thank you for your patience with the Photo galleries. We've got your galleries online!
We have finished writing a custom script to migrate the PhotoPlog to vBulletin5’s albums.

Unfortunately V-Bulletin killed the "Photoplogs" in their software upgrade which was unforeseen and we're the first development group to have written a script for getting the galleries back... that said, it took some time to reverse engineer the code and get the albums to move over seamlessly!

Forum users will be able to access their “PhotoPlog” images through their user profile page by clicking on the “Media” tab.
They will also be able to browse other albums by going to the albums page. (On the forum site, there is a link in the black bar beside “Forums” to the albums.)

In order for users to create an album please follow the steps below.
1) Go to user profile page and click “Media”
2) Click Add Photos
3) Enter Photo Gallery Title in the first field
4) Click Upload or Select from Photo Album to add photos
5) Click Post
6) Once posted, the album will be created as a “Topic” on the albums page for the public to see. The topic title will be the “Photo Gallery Title” they created before uploading their photos.


To create this migration path we used vBulletin5’s default album structure. Unfortunately, it won’t work like the “PhotoPlog” but is an album/gallery component on the forum now.
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Making molds and casting in place

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  • Making molds and casting in place

    I've been pondering making an oven for almost 2 years.

    I've toyed with a variety of ideas and keep coming back to the idea of using readily available castable refractory concrete.

    I've been sketching on some graph paper and think it would be relatively easy to create a dome and opening shaped mold using sheets of 1" insulating foam stacked and glued in diminishing diameters until the top is reached. One would then use a sander to create a smoothly shaped dome.

    Presumably you would take the negative image created by the process above and create the outside of the mold.

    Has anybody ever done something like this?

    Any comments or suggestions? I have to believe the precast ovens are made in a similar process.

    Thank you for your ideas.

    TM

  • #2
    Re: Making molds and casting in place

    I have seen pics of earth ovens made using a former of wet sand, so maybe you could do the same with castable , the stuff I have used works like a thick mud that could be layereed up maybe ?

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    • #3
      Re: Making molds and casting in place

      I think a mound of sand is a simpler way to go rather than the foam, but you need to cover it with wet newspaper or the castable refractory will stick to it, suck moisture from the castable and leave a rough surface with bits of sand stuck to it. Use 10% water in your sand castle mix to achieve the right consistency for building it. The other major problem with a one piece cast is that there are uneven stresses placed on the dome, with the top getting hotter first. This tends to create cracking, so the dome is better cast in a number of pieces which is more difficult. Also the castable refractory is difficult to work with because it goes off pretty quickly and is extremely temperature dependent, also quite expensive.
      Kindled with zeal and fired with passion.

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