Vacuumforming in an apartment?

CB2001

Master Member
First off, I didn't know where to post this (not exactly a tips and tricks forum to post this at). So, if I posted this in the wrong topic, I apologize and the moderators have my permission to move it to the appropriate place.

Okay, before I begin, no I do not have a vacuumforming machine constructed or anything like that. I've been considering on doing one, having to have come across my fair share of plans that include the complex and big to one that was simple. And I'm not asking about the designs for one. What I am asking about is in relation to vacuumforming and doing it in an apartment.

Right now, I live in an apartment in Winter Park, Florida while I attend Full Sail University. And after having to have seen lots of props and prop replicas, one of the things I've wanted to do is build a vacuumforming machine of my own so I can scratchbuild original props or prop replicas if I so choose to. Now, as I've stated, I've come across one design that is so simple, all the pieces can easily be stored in a closet. And the only way to heat up the styrene for this design is utilizing an electric oven (which I have). But my primary concerns about heating up the plastic is not only the fact that I worry about the plastic accidentally sticking to the inside of the oven (the tutorial for the vacuumforming machine recommends setting the metal frame with the styrene in the middle on top of four well placed glass bottles, so not to touch the metal rack), but the fumes from the heated plastic. I've heard a variety of different responses in relation to the latter. I've heard some say that "Plastic will only fume up if you're burning it." The closest response that made sense I got was from one user over at Starship Modeler's forums, who used to work for Kenner, when he says "Plastic is going to fume up when heated, no matter what, because your heating it up to near boiling." And, after having to have cooked some food a couple of nights ago, to which I had both the front and patio doors open and ceiling fan on for ventilation, and even after that, I could still smell the food I cooked about a day or so later.

So, my question is this: Do you think it's safe for me to vacuumform plastic in my apartment if I have the front door and the patio doors open with the ceiling fan running and hope that it gets the all the fumes out? Or do you recommend I just buy a heat gun and do the vacuumforming out on the patio where the fumes would least likely cause harm (even though I know using a heat gun to do it would be tricky?
 
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I wouldn't want to eat anything out of the oven after heating plastic in it. Although I have done it (I was desperate and needed 2 parts pulled) but I wouldn't recommend it. Also, it's going to be near imposable to heat up your plastic evenly with a heat gun, unless you're using a very small frame. You can build a small vac-form with a heating element pretty easily.
 
ventilation would also be good, even if its just a big window open. I remember the crashing headaches I used to get whenever I was modelling, the smell of the plastic was unreal.
 
If the part you want to form does not have any curves, then you could cut pieces of styrene and put them together with plastic welder. Lots of people (me included) have built various chest boxes and belt boxes for Star Wars costumes that way with good results, but more often than not, the edges needed to be sanded and the parts painted afterwards.
I have also heat-shaped a few pieces in the household oven without suction. In my experience, the plastic adhesives do emit far more harmful fumes than heated plastic, though.
 
I'd avoid using the oven you cook in if you can, not because heating the plastic releases fumes, i worked for 8 years in injection molding must have been exposed to thousands of tonnes of molten plastic over that time, no respitory equipment is required by law so it must be pretty safe knowing how strict health and safety is these days.
Problem is that accidents do occur and you wouldn't wan't molten plastic all over the bottom of your oven.
 
Thanks for both of your feedback, too.

And I've sent a PM to Spatcave to see if I can get some feedback in relation to this topic as well. :)
 
Well, I don't suggest it. Aside from health issues that will probably affect me in my golden years, it has caused a fire.

If you MUST do it, wear a respirator, ventilate the room, and avoid eating out of that oven until after you clean it thoroughly.

Hope that helps!
 
Well, I don't suggest it. Aside from health issues that will probably affect me in my golden years, it has caused a fire.

If you MUST do it, wear a respirator, ventilate the room, and avoid eating out of that oven until after you clean it thoroughly.

Hope that helps!

Thanks for the input , Spatcave. :D
 
My original vac form machine was a table I built and the oven....I ate out of it...and aside from the twiches, I'm fine.

The second one I did (in an apartment) i took a couple of heating elements out of electric camping stoves, plugging them into separate circuts and heated from the bottom up. That one caught a piece of plastic on fire and sent tons of black smoke billowing through the apartment and the fire department had to be called, and I was on oxygen for a couple hours to clean up my lungs.

The third time I did basically the same thing, except I mounted the heat box above the air table on plumbing pipe, and held on the frame with hooks.

It's not perfect, but it works well except in 2 corners, and it can pull a 24"x24" piece.

I can take pics tomorrow if you car.

Gregg
 
My original vac form machine was a table I built and the oven....I ate out of it...and aside from the twiches, I'm fine.

The second one I did (in an apartment) i took a couple of heating elements out of electric camping stoves, plugging them into separate circuts and heated from the bottom up. That one caught a piece of plastic on fire and sent tons of black smoke billowing through the apartment and the fire department had to be called, and I was on oxygen for a couple hours to clean up my lungs.

The third time I did basically the same thing, except I mounted the heat box above the air table on plumbing pipe, and held on the frame with hooks.

It's not perfect, but it works well except in 2 corners, and it can pull a 24"x24" piece.

I can take pics tomorrow if you car.

Gregg

Sure. I'd like to see it. :)
 
I think the concern is the toxic fumes that can be released during heating the plastic can stick to the inside of your oven, and then be released again when you cook food and make the food toxic.
 
Yeah, like the time my friend's mom was cleaning the oven with eazy-off and didn't tell him. He cooked a pizza directly on the oven rack and got sicker than a dog after he ate it.
 
I got a home vacuum forming machine from e-bay last year and its awesome!

It uses an oven to heat the plastic and a standard vacuum cleaner as the vacuum pump.

I was thinking, would it be possible to also use the vacuum cleaner as a rudimentary air extractor to suck up the fumes from the oven???

Richard
 
I got a home vacuum forming machine from e-bay last year and its awesome!

It uses an oven to heat the plastic and a standard vacuum cleaner as the vacuum pump.

I was thinking, would it be possible to also use the vacuum cleaner as a rudimentary air extractor to suck up the fumes from the oven???

Richard

That's a good question. I considered something similar, which was couldn't you make a vent out of cardboard and and have a fan within it to suck fumes out of the apartment.
 
Here are some pics of the set up I built about 7-8 years ago.


This is the entire rig. The base is built out of 2"x4" legs, 1"x6" skirts with a solid plywood top, 1"x1" riser to lift the bed, and a piece of peg board for the bed itself. Underneath the bed on the bottow, there is a 2" floor flange that the shop vac hose goes into. Also there is foam weather stripping around the outside of the bed.
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P1040867.jpg


The heat box is made out sheet steel I bought at Home depot. I think it's 24"x24"x6". The elements are out of an electric camp stove (2 of them). I had to spread them out a bit to get more even heating. As you can see, there are two corners that don't get much heat. I use a heat gun as needed to get those corners toasty.

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What you don't see is the frame. The frame is 24"x24" so I can get even pieces out of a 4'x8' piece of styrene. The frame is made out of 1"x2" furring held together by L brackets, and hinged on one side, and I use a screw to hold it together. The frame hangs from the underside of the heat box with screen door type latches, and then when it's hot, I unhook it, put it over my piece, make sure it's flush with the weatherstripping and then I turn on the vacuum cleaner.

There are issues with mine. It has to be powered off of two circuits....so a lot of extension cords, and the heat has to be off before the shop vac gets turned on or it will trip the breaker. But for a couple hundred bucks...it works.

Gregg
 
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