i have what i think is an "iron on" patch that has started to peel off. would this work to glue it back on?

Yes, Pull the patch off a little more, Be Very carful with this Aleene's glue it is Very Runny. Squeeze out just enough, Once you glue right up to the Edge of the Patch Press firmly, It's better to put something Heavy on it. BEFORE it is Totally Dry, say about 15 minutes take some duck tape and dab at any excess that has escaped from the edge of the patch. then put your weight back and let it dry, a good 8 - 12 hours.

Does this fabric glue stiffen the fabric after application?

it is a little stiffer, but still flexible.i used it to reglue patches on jeans that were coming up.i found no other glue that was better.

Does this glue degrade the backside of plastic gemstones and give them a "cracked" appearance, like E6000 does?

To my experience, Aleene's Platinum Bond Adhesive (now called Aleene's Super Fabric Adhesive, but the UPC number is still 0-17754-15271-8), does not cause plastic gemstones to degrade and have a cracked appearance. I have made many costumes for my children with this Aleene's product. Over the course of fifteen years, I have never seen any gemstones take on an unusual appearance even after ten years or more. I've attached plastic jewels to fabrics ranging from real and fake leathers to satin, chiffon and netting (butterfly wings). I can't say enough good things about this particular Aleene's product. I have never tried the E6000 product of which you speak, so I can only imagine the cracked appearance you describe in your question, but I can say the plastic jewels I've mated with this glue look just as good as the day I applied them to the fabric, even years later. I have used the Allene's Tacky Glue (in the gold colored bottle) and it doesn't work at all. Delta Jewel Glue and Beacon Gem Tac are slightly better than totally worthless, but just aren't in the same league as Aleene's Platinum Bond. The Platinum Bond Adhesive also really does work in the context of running things through the washing machine (in a lingerie bag), and plastic jewels don't look any different afterwards and two fabrics glued together don't fall apart.

ASIN	B00XECBU64
Best Sellers Rank	#63,846 in Office Products ( See Top 100 in Office Products ) #493 in Art Glues
Item model number	33097
Language	English
Manufacturer	iLoveToCreate
Product Dimensions	8.89 x 3.81 x 17.78 cm; 45.36 g

Super Fabric Adhesive, Platinum Bond, Super-Strong, Ultra Flexible, Permanent, UV and Waterproof, 1 Pack, 1.5 fl oz - Clear

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