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Oven build advice; Using a large plant pot as a plinth?

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  • Oven build advice; Using a large plant pot as a plinth?

    Looking to build my first pizza oven as cheaply as possible. To the experts here, how does this sound as a plan…?

    Place a large 100 × 100 cm concrete tile (ideally pre-bought but may need to create a mould) on top of an empty plant pot. The pot is 55 cm wide. So there would be an overhang of approximately 17 cm.

    On top of the tile I would arrange a single insulation layer with fire bricks surrounding glass bottles and sand, topped off with concrete.

    Then a layer of fire bricks, held together loosely with sand.

    On top of this — a clay dome with an archway.

    Question is, would the plant pot be wide enough to accommodate the oven and provide optimal insulation?

    Or...am I better off going to the extra expense of building a plinth from ordinary red bricks and/or breeze blocks? The insulation layer and cooking base would still make use of fire bricks.

    Last edited by UtahBeehiver; 10-06-2025, 08:37 AM. Reason: removed commercial hyperlink

  • #2
    Given that most plant pots have a smaller diameter foot, your 50 cm pot with a 100 cm slab as well as a fire brick floor and oven sitting over that will be a lot of weight on a much smaller foot.What's its diameter? My guess would be around 35cm. It sounds potentially structurally unsound to me. Will the pot be anchored to concrete it sits over?
    Kindled with zeal and fired with passion.

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