A friend and I recently decided to give glass etching a try. We had good results on most of our projects, but I had one 9×9 pyrex dish that did not etch at all. Several websites warn of this, but we had other ones that turned out beautifully, so maybe there are different types of pyrex? If you are going to try this, I suggest you do a test dot on your project to save you putting a lot of time into the design only to find it does not work on your particular dish.
It is a nice way to personalize a nice glass jar/canister full of Christmas cookies for gift-giving. We also like that it makes our dishes easier to identify at large potlucks!
Here are simple instructions by Melissa Esplin.
You can also use an electronic cutting machine such as Cricut to design and cut more elaborate stencil designs onto your adhesive vinyl.
Everyday Cheer 
This is a really cute idea. I once bought a box of train light lenses at an auction and then did research on Pyrex. Originally, the application for the invention was, indeed, for train beacon lights. It was the inventors wife who discovered that the glass made an excellent baking dish. The only reason I can think of that some wouldn’t take to the etching process is that some may be older and harder. I sold my flat, circular Pyrex train beacon covers as appetizer trays and they were quite a hit. It didn’t hurt that they could go from oven or microwave to the buffet.
Ginene
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Wow, I had no idea about the history of Pyrex! That is lovely. Thank you very much 😀
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