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Re: MTO Firebrick Arch entry

From the WFO board

Posted by Rado

In Reply to: MTO Firebrick Arch entry posted by Evert

Picture of Re: MTO Firebrick Arch entry Photo

Leave your entry arch as is at 203mm (10.9"). Exactly as you say; the difference is just in the centre arch top and there will not be any heat loss or change in performance that you could actually notice. Arch is often considered for the reason of making oven's entry higher, where arch sides are lower for the benefit.
If the entry opening wasn't arched but rectangle there would be just a little difference in performance. People often choose to make the entry doors slightly higher (usually by the ~ 1" or 25mm but also higher) to fit special roasters in or lamb as there would be no other way. When you do this type of slow roasting door is closed, same for baking.

E.g. picture shows Ray's oven with much higher entry vault to be able to fit a big pieces in, and close the door. O.9 of inch is not an issue.

I will write more postings during this weekend. r

Oven building details

Re: MTO Firebrick Arch entry

by Rado Hand on Google+

Oven information

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