Insulated oven door.

[brickie in oz]

Insulated oven door.

Here is an insulated oven door Ive just completed for the new oven.
Its fairly simple, 2 sheets of aluminium, 2 strips for the edges and some calcium silicate board in between.

I had to get some welding done at the local shop and all up with materials cost about $50.

The pic of the door in front of the oven doesnt show where the door really goes as the oven was lit when I took the pic.

[brickie in oz]

Re: Insulated oven door.

With the door in place keeping the heat in.

[david s]

Re: Insulated oven door.

I love the hands. What are they made of?
How thick did you make the door?

[brickie in oz]

Re: Insulated oven door.

The hands are from a child mannequin and made of some sort of resin.
The door is 50mm thick.
Just checked the temp and the outside of the door is 20c above ambient with the oven at 300c

[Lburou]

Re: Insulated oven door.

Only Brickie could have dreamed of those hands

Well and truely done.....Very lyrical Brickie!

[brickie in oz]

Re: Insulated oven door.

Thanks Lee.
My brain seems to be wired in a different way to others...

[david s]

Re: Insulated oven door.

Is that carbon in the corners burning off quicker now?

[brickie in oz]

Re: Insulated oven door.

Is that carbon in the corners burning off quicker now?

Seems to be, as with all ovens the more its fired the sweeter it seems to get.
It doesnt really cool down now between firings as the old oven used to, tonight we have a beef stew in there.

Ive also got onto a good reliable source of free Oz hardwood firewood in the last few days so its all good.

[david s]

Re: Insulated oven door.

I enjoy getting wood and the best wood is free wood.

[SableSprings]

Re: Insulated oven door.

Originally I had a insulated door made for me at a local sheet metal business. I designed it with a capped 1" space between two metal sheets. I then used perlite as the insulating fill. I found that although I liked the "firing door" for roasts, ribs, & beans - its weight made it cumbersome to use during active baking like bread. I had a second, lighter "working door" made that I now use during pizza & bread bakes. Its handle was cut from an old welding tool handle and stays quite cool during use. I can lift the working door with my left hand while I use my right hand to put the loaves or pizza on the loaded peel into the oven.

I've attached a picture showing the two doors together at the oven. The second pic shows the lighter door painted with high-temp black (the dragonfly cutout is high-temp white).

[david s]

Re: Insulated oven door.

I've also gone for a lightweight door. Using it one handed is a big advantage. Mine weighs 1.5 Kgs made from hardwood with a 12mm insulating panel attached with 3/16" stainless steel bolts. Often use it placed half way in the entry.

[mikesuttie]

Re: Insulated oven door.

[QUOTE=brickie in oz;110871]Insulated oven door.

How thick is your aluminium sheet?? I'm looking at making a lightweight door with a similar design, i'll keep everyone posted on how that goes!

Cheers!

[SteveP]

Re: Insulated oven door.

My door is made in the similar manner as yours. It is made of aluminum, two inches thick and insulated with 2" spun ceramic board, but I get a lot of heat transfer through it. It gets so hot that I need oven mits to handle the door. It is made in two sections, one "tub" section that houses the insulation and a second "backer" section with the handle. These two are bolted together. I am thinking of adding ceramic rope between the two sections to cut down on the heat transfer.

[brickie in oz]

Re: Insulated oven door.

How thick is your aluminium sheet?? I'm looking at making a lightweight door with a similar design, i'll keep everyone posted on how that goes!

Cheers!

The sheet is 1mm thick.
Ive clocked the door and it only gets to 20c above ambient on the outside with the oven at 300c.
There will be some transfer of heat around the edges to the outside.

[brickie in oz]

Re: Insulated oven door.

These two are bolted together. I am thinking of adding ceramic rope between the two sections to cut down on the heat transfer.

Its probably the bolts transferring the heat.

I did a second apprenticeship in boiler making long after Id finished my bricklaying apprenticeship.

In the boiler making courses we learnt lots on heat transfer, it doesnt take much to get the heat moving.

The larger the bolt of course the greater the heat transfer.

You couldnt glue the two together with something like this?
Sika? Firestop
http://www.sika.com.au/cmi/pdfs/FIRESTOPTDS360.pdf

http://www.sika.com.au/cmi/marine_products.htm

.