you don't fix it - you buy another one.
I have seen them on ebay and occasionally in the Thrift Stores.
but of course any repair can hold up for a week or even a year.
doesn't cost anything to at least try.

.

 

That UV activated stuff is supposed to work well with glass… and epoxy probably would as well. Don't know how either of them would hold up to the RF and heat though.

Cheers,
Brad

 

You can try CA glue (aka, Superglue). It repairs glass but I don't know how it will stand up in the MW.
John had the best idea but you might find a new glass plate costs about half as much as a new microwave oven.

 

search on amazon for 'replacement microwave plate'. They're 15-25 dollars though. A new, small microwave can be had for about $50 so you've got to make that decision.

 

My wife broke my favorite plate. I glued the two pieces using West Systems epoxy. It's been about a year now and still good. I wondered about heat because I have my water heater cranked but so far no problems.

 

I'd expect that an epoxy with a loss tangent close to that of glass and capable of handling the expected maximum temperature (212º F, since the microwave works by heating the water, and the latent heat of vaporization would regulate the temperature), so that would probably work. Loss tangent is a measure of the transmissibility of energy through a dielectric substance. Personally, I'd just buy a new turntable. If you glued it and it broke, it would break at the most inopportune time possible.

 

I d expect that an epoxy with a loss tangent close to that of glass and capable of handling the expected maximum temperature (212º F, since the microwave works by heating the water, and the latent heat of vaporization would regulate the temperature), so that would probably work. Loss tangent is a measure of the transmissibility of energy through a dielectric substance. Personally, I d just buy a new turntable. If you glued it and it broke, it would break at the most inopportune time possible.

- Dark_Lightning

Oops, microwave ovens do not just heat water. Google "microwave oven" for more details. Oils and fats, for example, can get much hotter. You can easily make well cooked bacon, or overly browned bacon, or frankly burnt bacon in a microwave oven, You cannot prepare any of these by boiling raw bacon in water at 212 degrees F.

 

I d expect that an epoxy with a loss tangent close to that of glass and capable of handling the expected maximum temperature (212º F, since the microwave works by heating the water, and the latent heat of vaporization would regulate the temperature), so that would probably work. Loss tangent is a measure of the transmissibility of energy through a dielectric substance. Personally, I d just buy a new turntable. If you glued it and it broke, it would break at the most inopportune time possible.

- Dark_Lightning

Oops, microwave ovens do not just heat water. Google "microwave oven" for more details. Oils and fats, for example, can get much hotter. You can easily make well cooked bacon, or overly browned bacon, or frankly burnt bacon in a microwave oven, You cannot prepare any of these by boiling raw bacon in water at 212 degrees F.

- Kazooman

Fair enough. I for one wouldn't liked boiled bacon. :^D I hadn't considered heating anything other than water or water-containing products when I posted this.

 

ebay.

 

Fair enough. I for one wouldn t liked boiled bacon. :^D I hadn t considered heating anything other than water or water-containing products when I posted this.
- Dark_Lightning

I can confirm the bacon statement - I make bacon in the microwave all the time… if you leave it in a bit longer than you normally would, it comes out really crispy (after cooling) and easy to break into bacon bits for salads and stuff. It is also much less greasy than what you wind up with frying in a pan.

Cheers,
Brad

 

I've done a ton of UV gluing glass.
(In fact Friday I should be getting the glass for a case I'm going to glue together for David Copperfield.)

When I start the case, I will glue a couple of scraps and put them in the microwave to test.
I think it would work. Better than epoxy I expect.??
UV turns into a hard plastic like material when it is cured. (Picture polycarbonate material)
Hard as hell to cut with razor blades.

Although, even if it does work, it wouldn't be cost effective for you to buy the UV glue and curing black light.

As said above, thrift stores or just order a new one from amazon or wherever. Or try the epoxy and see what happens, you never know until you know…..

 

There are small kits of UV glue and light for less than $10 near some check out counters.