When I first started Making bows all I had to dry heat my bows was a cheapo heat gun. I rarely got wood to move much with it. Since then I use a space heater I just clamp the bow onto the form ,to keep it from moving, set the heater an inch or two away and leave it for about half an hour ( or untill I remember it
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) since then it's been very easy for me ,recurves and such are no problem.