oven

[bzer1]

I knew if I looked long enough I would find something. Here it is for your reading pleasure.


Why don't you use galvanized steel?

In short, zinc oxide is bad for you.

Heating galvanized steel can result in an unpleasant condition called welder's fever. Caged animals can develop illness brought on by swallowing or licking galvanized parts. We've known many people in the metal working profession forced to take extended sabbaticals due to various kinds metals poisoning. We work intimately with our construction materials and avoid galvanized steel out of concern for both our own health and that of our customers.

Additionally, the zinc coating on galvanized steel, used as a rust deterrent, is by no means permanent. The coating will often corrode into white rust which then results corrosion of the steel underneath. Due to the nature of the process the steel used in galvanizing is rarely of premium quality.

For those interested in the nature of galvanizing process, here is a description from Intl. Chemtex Corp: In the galvanizing process, the steel to be coated is first cleaned in a caustic bath followed by pickling in a dilute hydrochloric or sulfuric acid bath. The steel is then subjected to a fluxing operation with a zinc ammonium chloride solution.

Sorry for the bad news but it's better to find out now than to be on your back sick as a dog...or worse.

[Hemi-T]

I would also be concerned about the foam insulation in the freezer panels. They are likely to be even more hazerdous than the zinc from the galvanized sheet metal. Foam handles cold real well, but not heat. Fiberglass works for hot and cold.

Hemi-T

[senna-the-great]

Thanks for all the help guys. I guess my good idea wasn't very good.
I dropped some powder coater off to a customer who has a high
restoration shop who also does alot of fabrication and he gave me
so good idea's on fabbing the frame.
Thanks again,
Art

[DALE]

This thread didn't take long to fill up. The only one missing is non-stick . These guys all have good points. Avoid galvanized! I use fiberglass because it's cheap and works well just don't compress it.You can go another way if you want--block walls then get high temp foam board to insulate it(not home depot board, get someting like fiberfax thats used in burn off ovens and rated at 1000 plus degrees. This would require no liner inside, it's very rigid and high r-factor. Light sounds ok and build with what ya got works for me.

[senna-the-great]

Hi,
I'm about to order steel today or tomorrow. The company I work for
build's diecast machine's that use industurail 220v emement's around the
melt pot's so there's a lot of electrical knowledge at my disposasal. I'll
keep you posted and add so pic's to the gallery if anyone would be interested.
Have a good day and hope it's warmer where you are,
Art

[etyrrany]

Yes, please post some pictures. Everybody who says their going to build an oven also says their going to post some pictures, they never do. Hopefully you'll be the first.

If you feel so encourage a whole build photo documentary would be nice too.

etyrrany

i know this is off the subject: but when i build my foundry to pour cast alum... i build up a fire box with fire brick and cast iron that hold a cast iron box .. that way all the heat stayed in one area .. but lik i say that is off the subject... but sand casting is not powder coating

[non-stick]

Originally Posted by DALE

This thread didn't take long to fill up. The only one missing is non-stick .

lol... I've been so busy lately I'm afraid I haven't been able to keep up with things around here lately. I see you all need no special assistance from me though . I see you are in capable hands and ther are some VERY good things here to make note of. I'd pay creedance to what these guys say.... some of the most ingenius things I've seen have come from this place.

[senna-the-great]

Hi All,
I gave must of the frame welded up for the oven. It's looking pretty
good. I'm putting it on caster's becauce I'm limited for space and
I can roll it into my spray booth area when It's not in use. I'll post
some pic's later in the weekend once I mount the caster's and get
it right side up.
Have a good weekend,
Art

[senna-the-great]

Hi,
I finished my oven yesterday and had to do an ATV frame right away.
It worked great. I'll take some pic's and add them to the photo album
in a day or so.
Art