So I think it is safe to say, two coats of Mod Podge Super Gloss - Brilliant on your paper beads will keep them more than adequately water resistant. Even one coat (which is what it is designed for) will be fine.
On the other hand, how do you make Mod Podge with paper beads?
Cut a length of chain to use as the base of the necklace.
Slide rosy quartz beads onto a head pin. ...
Locate the middle point of the chain and attach the bead charm you just made to this point. ...
Slide paper beads onto the chain, putting one on each side of the charm.
How do you glue beads?
Place a small dot of glue on the bead rather than the material you're gluing it to (this will give you the most secure hold and avoid using too much glue). Make sure the glue is placed so that the hole in the bead won't be sticking up and visible in your project, unless this is the look you're going for.
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In a bowl mix the flour, salt, food colouring and then add water. Knead the dough for about 15 minutes. Using a small amount of mixture, shape a bead into the size you like. Using a skewer, make a hole in the bead and place on a baking tray.
Varnish is usually used for sealing wood or other hard surfaces that are absorbant but you can asl house it for paper. Varnish will usually dry transparent and hard and it will make the surface shiny after it has dry.
Bend materials, such as forks and spoons, knitting needles or vinyl records, into necklaces, bracelets and rings. Heat these items until they're pliable and then bend them around a glass jar. Drill a hole or two into Scrabble tiles or keyboard and typewriter keys. You can mod-podge over them or leave them as is.