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Seems nice indeed. Cory, do you know what kind of glass tray should be in these?

My RR-2 didn't have one when I got it. I did get one from a newer Amana and it fits there nicely but John showed me an older Radarange with a flat glass tray.
 
The tray...

I was fortunate in that my RR-2 was an all-original, low use model right out of Cedar Rapids, IA. It has the 'early style' tray that was also used in the 3's and 4's with the warning about not operating the microwave without the tray in place.

I've talked with the owner of an RR-1 but his was a curb find so he's unsure about whether his had a tray, or not. We also know there's an "early" and "late" version of the 1, but having not set hands on either, I can't say if the difference is purely cosmetic, or if glass was introduced mid-year. -Cory
 
Flat Shelf for the RR-2 MW ovens

Hi Phil, it would be possible to have a piece of glass cut that would look much like the original tray although it might not be tempered glass, ours also has some strips of tape like material on both sides to make it easier to handle and I guess to keep it from scratching the SS oven interior. If the flat tray that I have didn't have the Amana label on it warning not to use the MW without the tray in place I would almost think that someone made this flat tray themselves. I suspect that a lot of these original flat trays got replaced with the later molded trays which fit perfectly in the RR-2s.
 
Tempered Glass

Any decent glass provider can supply custom cut-to-size tempered glass. You could even get it with ground and polished edges and rounded corners.

I used to work at a small independent hardware store and we would routinely source custom made tempered glass pieces to replace shelves etc. The glass is usually cut to size and then tempered although it may be possible to waterjet cut pieces from an already tempered sheet now.

Do a Google search for Glass Supplier in your area and call them. I was always amazed at how cheap the pieces we sold were.
 
That's interesting Phil!

I just called a local glass provider and they can order any size tempered glass under 3 square foot for $18.40 canadian and the edges are sanded smooth.

Then if your brother could measure the one he has in his RR-2 microwave oven and tell how the edges are (or take a few pics?!), maybe I'd try that!

John?!
 
John, interesting that they had the warning imprinted on flat glass. I'd love to see a picture of this. The later trays (with drip edges) are borosilicate glass, and as such, aren't tempered. In fact, a common failure is that they split in two after years of microwave popcorn popping. Tempering probably helped with strength though. The trays are thick and weigh over 6 lbs each! -Cory
 
Flat Shelf for the RR-2 MW ovens

Hi Cory, actually the warning label is just a red sticker applied to the front of the tray.

 

MW corn popping and broken glass cooking trays.

 

This still happens in brand new MWOs all the time and it can happen the frist time you do it. When I use MWPC [ which I seldom ever do ] I always place a piece of Corning-ware in the MWO and place the PC bag on top of the CW. I would do this especially if you have a vintage MWO, something else to consider is whether your MWO is vintage or new, popping pop corn in any MWO is very hard on the magnetron tube and often causes early and dramatic failures of the mag tube.
 
John, if you have the chance to get the dimensions and thickness of the glass plate in your RR-2, I'd try to have one made to that size.
 
The heat from the popcorn bag is intense and concentrated. I did wonder if the glass shouldn't be a low expansion kind, Pyrex etc. Once I used my infrared thermometer and the glass tray was 450F where the bag sat! I pop on top of an upside down Corelle plate if I microwave popcorn now.

Of course one should avoid microwave popcorn as the high heat leaches lots of nasty chemicals from plastic liner of the bag. I love how people I know freaked out about BPA water bottles, but they still eat several bags of microwaved popcorn a week...
 
Corelle:

Can break under the conditions you describe; if something extremely hot comes in contact with the Vitrelle glass of which Corelle is made, the glass can suffer a "dropout," meaning a chunk of glass the approximate size and shape of the hot item will break loose, leaving you with a hole in the plate. This phenomenon is sporadic; some people never have a problem. Or they go for years without a problem, until one fine day....

My own choice for microwave popcorn is a Corning Ware pie plate (Blue Cornflower, natch!), which can take much greater heat than it's subjected to in the microwave.

Just wanted to be sure you knew - you don't say which Corelle pattern you have, but some patterns are not easy to replace.

Corelle Corner has an article that describes this kind of damage; scroll down to the paragraph titled "Heat Fractures":

 
Thanks Sandy for the warning, I realize that Corelle can have thermal issues. So far no problems though.

The plates I use are some old all white hackers. Some are even off color pieces that came from the outlet store. A failure wouldn't break my heart!
 

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