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Building a Thermoforming Oven

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I am building a vacuum-forming table and wish to also build the oven. I took apart a Magic Chef stove/oven

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Old 11-14-2011, 10:13 AM
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Default Building a Thermoforming Oven
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I am building a vacuum-forming table and wish to also build the oven.
I took apart a Magic Chef stove/oven and wish to use one of the heating elements form inside the oven. I have the entire wiring harness removed as well as the oven/broil temp control and the thermostat that I will use for my project.
I've disconnected the 4 top burner elements and have the entire wiring harness out and ready to modify.

My questions are:

1 - Can I just disconnect all of the wires (except those leading to the aforementioned oven/bake element) without rendering this thing inoperable?

2 - Since I am now only using one heating element and the thermostat, can I set that up to run on 115v or do I need to find an element that is specifically made to run off 115v?

3) If in fact I do have to use a different element, where can I find one rated at 115v and would that mean that I would the also have to swap out the thermostat/oven control unit for one that works off of 115v as well?

Thanks guys and keep up the good work. I will submit images or a video when this is completed.

Thanks again and be well.

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Old 11-14-2011, 01:08 PM
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I can try to help but do not know if it will be helpful.

1 - Can I just disconnect all of the wires (except those leading to the aforementioned oven/bake element) without rendering this thing inoperable?
Perhaps list the stoves model number so that someone can look at the thermostat you want to use to see if it will do the job. Many of them switch back and forth between the bake and broil elements. This improves pre-heat time and also reduces the temperature gradient in the oven.

2 - Since I am now only using one heating element and the thermostat, can I set that up to run on 115v or do I need to find an element that is specifically made to run off 115v?
An element will run on 115 but you will half the wattage. Note that this is not a linear relationship so halving the wattage is just approximat.

3) If in fact I do have to use a different element, where can I find one rated at 115v and would that mean that I would the also have to swap out the thermostat/oven control unit for one that works off of 115v as well?
You might be better off using the guts out of a toaster oven as they are made for 115 volts.

I do not know how critical the temperature set point is (how much plus/minus can you put up with).
Also how critical is it that the temperature be consistent in the oven.
As mentioned earlier may ovens switch back and forth between the elements so the top and bottom of the oven are close to the same temperature. Perhaps installing a fan in the unit to circulate the air would help with this but now you have added complexity to your project.
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Old 11-15-2011, 09:33 AM
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denman,

Thank you for your reply.
I erred in not providing the model # but due to your responce I decided to simply enlarge the oven space. That would give me the added room to include both of the interior (bake/broil) elements (one top and one bottom).The information you provided about how these two elements work in unison to keep the oven temp consistant throughout makes sense.

Additionally, and regarding my wish to make this using a 115v power supply, I have found that it would be more practical for me to keep with the 220v configuration instead.
In as much I've made an extension cord using the appropriate wire gauge as recomended by my local Hampton Zimmerman outlet.
That issue has been remedied.
I do like the idea of using the heating elements from a toaster and think that I will search Craigslist for the same when I start to build the smaller sized model.
Thank you for your time and consideration in this matter. it's is greatly appreciated.

Be well.

John
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Old 11-17-2011, 12:42 PM
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jpanhalt,

I think I posted this in the wrong place so I shall try again.

As it turns out I just picked up a Magic Chef super capaciy electric stove.
I have broken it down so that I can use one of the heating elements from
the oven as a heat source for my thermoforming oven.

My questions to you would be:

1) Can I simply disconect all of the other wires that go to the top 4
burner elements and the broiler element and still use the oven temp control
and thermostat (which is still connected) as described?

2) Can this singular heating element be set up to run on 115v?

Thanks again.

John
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Old 07-07-2014, 11:28 PM
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Default Building a Thermoforming products

Thanks for reply !!

Thermoforming is a well known manufacturing process where a plastic sheet is heated to a temperature that makes it moldable and then stretched or formed to a particular shape (usually in a mold). Finally, it is cooled, trimmed, and cut to create usable products.
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