I’ve watched a few isomalt tutorials, and all seem to use heat lamps to keep the isomalt pliable. I found this site with all kinds of information on isomalt.
http://www.sugarartsinstitute.com/blog/post/isomalt—-the-secrets-of-success
Also a YouTube tutorial on isomalt
https://www.youtube.com/watch?v=t0hwk0f9_vY
Hope this helps.
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