Q&A for How to Make Cracked Marbles

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What if I don't have a glue that strong? Is there any other way I can make a necklace without it?

Community Answer

You should use a glue that is specifically for glass, such as 9001 High Strength Adhesive. This is not too expensive and can be found at a craft store. You can also use an epoxy, but that's a lot of extra work as you have to mix two adhesives together.

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Question

Can I do it in a microwave instead?

Community Answer

No. The tiny air pockets in the marbles, even if they are not noticeable to the naked eye, will expand and the marble may explode.

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Question

How long do the marbles need to stay in the oven?

Community Answer

20 minutes, according to the article. You might want to check on it every once in awhile, though.

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Question

I know it said that it exploding was unlikely, but exactly how big is the risk of that?

Community Answer

The risk is minimal. You can always take precautions, such as protecting your eyes and body.

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Question

Can I use a cookie sheet on the oven tray?

Community Answer

Yes, this is a good idea to provide extra protection for your oven tray/rack.

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Question

How and why do the marbles crack as soon as they enter the cold water?

Community Answer

Thermal shock. When allowed to cool on its own, the marbles cool down evenly inside and out. When cooled fast, e.g. by placing into ice water, the marble glass cools down unevenly. This causes the glass to crack.

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Question

Is there anything clear I can put on the cracked marbles to keep them from crumbling?

Community Answer

The marbles shouldn't be crumbling. I bake mine at 500 degrees and for 20 minutes, then dump them all at once into a bucket of ice water, and I have never had a problem with crumbling.

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Question

Can I make a necklace without using glue?

Community Answer

Yes, if you have tools that drill into glass.

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Question

Can I use a candle instead of an oven?

Community Answer

No, they need to be in the oven to heat evenly. Using a candle would not achieve this effect.

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Question

If I had colorless marbles and I had food dye in the cooling bowl, would it potentially infuse the color into the cracks?

Community Answer

Yes, but the color would just seep out in about 5 minutes because the cracks do not close.

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Question

Besides making jewelery, can you make other things with these marbles?

Rae

Community Answer

You can make bracelets or add them to sandals and/or shoes, or add them to a box as a decoration. There are all kinds of fun things you can do with your baked marbles if you get creative.

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Question

I actually want my marbles to break into little pieces instead of just cracking. Is there a trick to making them break into small pieces?

Community Answer

After cracking them, try hitting with a hammer. The marble should break where the inside cracks are. Put them in a closed bag before you hit them so the pieces don’t fly all over.

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