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Israel franco Novice
Joined: 22 Sep 2005 Posts: 51 Location: mexico d.f.
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Posted: Wed Nov 23, 2005 1:11 pm Post subject: i have a problem of the oven |
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I have a problem with the corners of the oven. when I warm up the plastic the corners do not smooth the sufficient, and if I wait the corners are warmed up, the plastic melts in the center (plastic burn !!what a mess!! ) some body have this problem too?
I believe this happens because the walls of my oven are in 90o angle |
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jegner Site Admin
Joined: 30 May 2003 Posts: 2144 Location: Texas, USA
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Posted: Wed Nov 23, 2005 4:20 pm Post subject: |
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Hello!
The oven heats in two ways. 1. Direct heat radiating from the heater elements, and 2. convection heat. The corners are heated with the convection heat. Convection heat is the movement of hot air around and up the top of the oven. A tapered wall forces the air, much like that of a chimney, to circulate up and around.
The base of my oven is 28 inches, and the top is 24 inches. This taper allows for convection.
Preheat your oven for 20 minutes, then heat your plastic. |
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Israel franco Novice
Joined: 22 Sep 2005 Posts: 51 Location: mexico d.f.
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Posted: Wed Nov 23, 2005 5:00 pm Post subject: |
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thanks for the information i will try preheat the oven but i have another cuestion my oven base is 24 inches, and the top is 24 inches (i think i don't follow the instructions very well he he he!! ) the preheat can work anyway? |
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jegner Site Admin
Joined: 30 May 2003 Posts: 2144 Location: Texas, USA
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Posted: Thu Nov 24, 2005 7:13 am Post subject: |
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Yes, 24 inch base would taper to a 20 inch top. Thats one reason the corners are not hot enough. |
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ANH trooper Master
Joined: 20 Oct 2005 Posts: 305 Location: UK
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Posted: Thu Nov 24, 2005 2:08 pm Post subject: |
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Yeah you will need to taper your oven walls.Not a big job,but it will make your usable forming size smaller unless you remake your oven bigger to 28" base.
What is the distance between your heating elements/coils to the plastic?
Jim,do you really have to preheat your oven for 20 mins?
All I do is just turn on the burners full for a minute or two with the lid on,then turn them down half way and place the plastic on top and it only takes a couple of mintues before it's ready to form.
On my set up I have to actually watch the edges as they heat up quicker than the middle Obviously the thicker you go,the longer it takes to heat up.
Just my .02p
-Paul. |
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Israel franco Novice
Joined: 22 Sep 2005 Posts: 51 Location: mexico d.f.
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Posted: Thu Nov 24, 2005 2:41 pm Post subject: |
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nooooo!! i dont want remake the oven maybe i use a heater gun or something to heat the corners because remake is a lot of job
the distance between the heating elements and plastic is about 4.5'' |
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