Seriously useful for making small things as long as they don't get hot. I've used it for making little wheels, fixings moulded to the shape of things, detail parts for models etcExcellent value product, essential addition to the hobbyists toolkit. Simply guesstimate how much you need, drop it into hot water and mould it into the required shape, this stuff sets solid, it really does the job. Anything you trim off or don't use, simply let it set solid, put it back in the jar and reuse it when you need to.I was keen to get hold of some of this stuff but when I got it and used it I was very disappointed with it. It says it melts at 60degC but it seems to need much higher temperatures to soften and become workable. Working on its claim it would melt at 60degC I put some in a little jar and sat it in a pot over a stove expecting the beads to fuse together and become a gooey liquid in the jar. Well that did not happen! The water in the pot was clearly boiling - 100degC and while the beads were starting to melt down they took their time to do so. It was so slow I couldn't be bothered waiting. I thought of a different idea.
I went back to my workshop and started heating a butter knife with my hot air gun running at the high setting. Then with that very hot knife I was able to shift it around like cold butter to patch some crunched foam. As for the claim that one could work it with your hands - forget it!
The repair was so so. What I didn't like was that it was much harder than my EPS foam. I feel rather diddled. I would have been able to do something similar with my hot glue gun glue and saved about $30 all up cost!