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deejayoh 07-17-2013 01:59 PM

Show us your Door Thread
3 Attachment(s)
There are lots of questions about oven doors, but no official door thread. I thought it would be useful to consolidate a bunch of examples that showed different ways to build oven doors.

I'll start it off!

Door material:
Face is HOT ROLL SHEET / PLATE 0.060" (16 GA) Hot Rolled STEEL
Thermometer protector is HOT ROLL TUBE - SQUARE
0.625" OD x 0.065" Wall A36 Hot Rolled Mild Steel Square Tube

Insulation: Two inches of ceramic fiber blanket

Handles: Gate handles purchased from Home Depot. I was cautioned about using metal but they don't seem to get hot.

Cost: ~$55 if I don't count the welder. About $25 for the metal from; $5 for the handles; $25 for the thermometer (from our hosts); Insulation was leftover from build

Weight: 10 pounds

How it's built: I cut the metal with a metal blade in a jigsaw. Outside plate was based on my entry arch form less 1/2 inch all the way around. The inside plate was based on my oven opening arch less 1/4" all the way around. I cut a 2" strip of steel to go around the outside and welded the whole thing together with a HF cheapy welder that I bought off of craigslist. The door was the first thing I ever welded - and it took a lot of grinding to get it smooth, but it came out pretty well. Took an afternoon to weld it.

How does it work: Pretty well. My temperature ramp about 100 degrees loss a day from the oven; third day temps are in the 250-300 degree range. Thermometer reliably reads 50 degrees lower than the temp my IR thermometer shows for the inside of the oven.

Favorite thing about the door: the weight.

What would I do to improve my door design: I could have made it deeper. Making it 2 1/2 or 3 inches deep would have given more insulation and not cost any more or taken any more time. And I still might add some rope gasket around the door to get a better seal.

Attachment 37343 Attachment 37344Attachment 37345

mrchipster 07-17-2013 02:26 PM

Re: Show us your Door Thread
I will post about my doors a little later...
How about answering the question, What would I do to improve on my door design?

Ken524 07-17-2013 03:10 PM

Re: Show us your Door Thread
Here's my door:

UtahBeehiver 07-17-2013 04:14 PM

Re: Show us your Door Thread
4 Attachment(s)
My door is very similar to DJs except made from stainless steel and cut with a plasma cutter. My cost was a six pack to the welder, the other materials I salvaged or scrounged with the exception of the Fu dog which I brought back from the Great Wall in China. Stuffed with leftover CF too. Weighs about 11 lbs. Hold temp similar to DJ. I would also make slightly deeper for more insulation.

Les 07-17-2013 04:43 PM

Re: Show us your Door Thread
Here is a link to mine. .062 aluminum filled w/ loose vermiculite. I think the copper on the handles was 14 ga. It's pretty light and retains the heat very well.

brickie in oz 07-17-2013 11:47 PM

Re: Show us your Door Thread
My insulated door, its made from aluminium and has 40mm of cal sil inside.

My blast door.

mrchipster 07-18-2013 04:14 AM

Re: Show us your Door Thread
1 Attachment(s)
DJ, thanks for the great idea.

I have two doors one is heavily insulated and one is a window door (minimal insulation) for baking.

Insulated door----
Stainless steel interior and sides
Aluminum exterior

4 inches FB board in door
Rope gasket on flange

Square U brackets cut in half and clothes closet rod cut for handles holes drilled in ends

out of pocket direct cost
Rivets - $8.00
Square U-bolts - $4.00
Thermometer - $12.00 (eBay)
Stainless - free from friend
Aluminum - scrap from another project
FB board - left over but value probably $35
Wood overlay - left over from sauna build

This thing is heavy - 17 pounds

how it is built
I used an angle grinder with thin metal cutting abrasive disks. The metal cuts easily with this method.
I made tabs which were bent over to then drill and rivet the panels together.
Using the rivet method allowed me to custom fit the door to the opening, I was able to adjust the shape to closely fit the inner arch because I drilled and riveted the transition panel for a very close fit adjusting between each tab. See my post "Chip's 42 in Minnesota" for more details on the build.

How does it work
I am very happy with the heat retention, in the summer I can be 250 at day 5 or 6.
Thermometer reads consistently 100F low at high temps and 50F low at under 300 but I know that so "No problem". Probe should extend into oven further for proper read - but I think if it was to long it would get inthe way.

Favorite thing about the door
It really holds in the heat.
It is holding up well even after lots of use and 1.5 years of being outside the whole time.

what would I change
I would attach the door handles to the exterior panel only. The handle posts go thru to the interior and transmit a lot of heat to the outside. (Note char on wood)
I would have a thermometer with a larger dial so I could read it from a greater distance (old eyes).
I am still trying to figure out a good place to put the door when I am not using it. It is big dirty and often hot and it is hard to find a good place to put it close but safe from little hands.

My window door

What would I change?
Thermometer not needed for the window door

Sent from ipad so only one photo......

mikku 07-18-2013 06:54 AM

Re: Show us your Door Thread
3 Attachment(s)
Here is my work in progress door.
No handles yet, but will be wood (some sort --yet to be determined)
Can be disassembled now to install insulation inside--yet not installed.
Will have a (wood stove type) rope gasket around top sides when finished.
Thermometer will be attached by threaded coupling in door.
Not enough time to gather misc. supplies...

Photos attached:

Attachment 37360

Attachment 37361

Attachment 37362

My camera is over the hill- Canon cannot repair it and I'm too cheap to get another right now--some photos come with pink color--free!

Dino_Pizza 07-19-2013 01:29 PM

Re: Show us your Door Thread
Nice door mikku:
Is any part of it welded? Or is it all bent stainless steel with screws?

I'm just asking because I'm trying to build my door now but I have no idea how to weld and would like to make it without welds.

thanks, Dino

deejayoh 07-19-2013 01:34 PM

Re: Show us your Door Thread
Nice selection! Keep 'em coming!

Dino - looking forward to seeing what you come up with. I'm sure it will be nice based on your oven build. Even though it didn't work for me, I still think that you could find someone through CL Gigs to weld a door if you've already cut the parts.

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