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It takes about 1.5hrs to get really hot compared to just 20-30 mins on my dads metal one he bought which is also insulated. It does keep the head really well. Still just warm in the morning is you have your pizza party in the evening :) it can go a lot hotter but my temp probe maxes out at 350. I find it hot enough to cook a pizza in 1-2 mins.
Sorry for the late reply. For the benefit of others... Yes the felt is held down to the dome with chicken wire which you sort of tie/sew together with more wire as you go. It doesn't have to be perfect looking :)
Hello, it's just standard cement. The fireproofing comes from the properties of the vermiculite alone. Ours is still going after many years and cold winters outside - we do protect it from rain with a cover.
It is a very strange material to work with but the strength comes from drying and hardening over time. Yes very crumbly indeed, hard to get the first layer started! (sorry for the delay in reply)
Sorry for the delay in replying...It should be mm so about 20mm - although rereading the instructions it was more like 30mmI will correct the instructions and thanks for spotting the mistake!Pascal
You jig looks perfect for the job! - good luck with it all!
EPIC! I'm doing this! Thanks
It is actually scientifically not a form of asbestos. It was once mined from a mine which also contained asbestos at the site. This mine was closed in the 90s and the vermiculite from it was used to insulate a lot of houses in the states. Vermiculite mining is now regulated and tested. Wear a decent mask and be cool 🙂
No, Vermiculite is scientifically not Asbestos. They are two distinctly different minerals. They are both silicates i’ll give you that… As i have mentioned in the comments: Vermiculite was once mined from a mine which also contained asbestos. This mine was closed in the 90s but that particular vermiculite was used to insulate many houses in the states. Vermiculite mining is now regulated and the product tested. Wear a decent mask and be cool :)
I aim for at least 300ºC but sometimes I get inpatient and put a pizza in at 250ºC which just takes a bit longer to cook... 5 mins vs. 1 min at 350ºCThe surface is made out of the solid dense type of fire bricks and I don't ever have sticking problems thanks to coarse maize/corn/semolina I put on the peel and subsequently ends up under the pizza as it cooks. I covered this step in the Instructable.I just about met the recommendations for dome height / door height yes - take a look at the plans PDF included in the Instructable.
Nice! You've gone to a lot of trouble to make your instructable really good and clear. Great pictures too. well done. voted
Thank you for your vote! - I think your oven would survive if you took measures to protect it. Say October time... wrap it in an old blanket and add a plastic cover. Or as one commenter suggests; building a portable base. all the best!
Hmmm... Tricky one. I have seen someone build a gym ball pizza oven on a wooden base. YouTube I think - I can't remember if it was moveable though. It's pretty damn heavy. I could lift the dome easily although it was awkward 25kg, so I'd guess outer verm dome another 25kg, blanket 3kg, plaster layer 15kg, bricks and mortar 20kg, insulation slab 5kg, fire bricks HEAVY! I'd cast a layer of vermiculite to keep the weight down there (it's another technique I've heard of but not as durable) best of luck
Thanks, I'm pleased it's helping people out.
Thanks for your kind words from one experienced pizza eater to another ;)
I didn't actually answer the question... Back to back. I put pizzas in one after the other - as fast as people can prepare them!
Vermiculite, Gym Ball Dome, Wood Fired Pizza OvenView Instructable »