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nice addition, id affectionately call that the mad scientist version haha outta curiosity why do you heat it up is heat the catalyst for the reaction?
that reflection is amplified in the photo but that effect does show to the naked eye and gets more defined the the thicker the glass
if it predates pryrex then most likely it is not tempered. I believe pryrex was some of the first heat strengthened glass manufactured long long ago for use on railroad lights, that kept breaking from the heat of the bulb and sudden cold from rain/snow. Don't quote me on that but I'm pretty sure you'll be okay. If your worried about breaking them I'd recommend using the cream and only doing 1-2 coats to avoid breaking the outer layer. plus the blasting gun can break thin glass just from the force.
thank you and yes the grit I use is between 70-90
great info on sand blasting pyrex thank you.
great suggestion sand paper can actually be used in more advanced etching to add shading effects.
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Turned Bottle Opener...
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awww the struggle! I have that sort of problem all the time on top of that I live in California where the VOC restrictions are ridiculous.
Hi I am the author of this instructable and would like to clear the matter of etching tempered glass up with you. Tempered glass under goes a heat treatment that causes interior tension and external compression. If the outer layer of compression is worn down too the tension layer (by etching) that tension is released resulting in the piece shattering into many little pieces. I've attached a diagram of a cross section of tempered glass so you can see these layers. While you are correct that you can etch tempered glass' outer layer the danger of doing so is too high and should not be attempted for safety reasons. Please don't advise people to do so.
great addition :) I use those to do more delicate work harbor freight actually sells one as well.
thanks for letting me know about the link issue. I'll fix those asap. and that's interesting that it's called something completely different in Germany Ill add that to the note section.thanks for your comment if you do make one please post a pic of it I'd love to see it
of coarse I'm glad to here it helped somebody out hopefully you'll be able to use it next time you etch
You can use glass beads if youd like. but even though glass beads will work and crushed glass will work they will dull significantly faster than the aluminum oxide and work slower because the hardness (moh) of the glass bead is the same as the glass your etching.
thanks :) I guess you could say I use the old school technique of etching. I usually light mine up too with color changing RGB LEDs I plan on making that instructable later. but heres a pic of that sign on the base
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