Quote Originally Posted by irving2008 View Post
I hope not... 85degC absolute case temp is the maximum recommended temp you should run a stepper at - higher than that and you risk internal breakdown and demagnetisation.... remember inside its going to be a lot hotter!

an 85degC case is too hot to touch for most people. Maplin do a cheap £19 multimeter with a temp probe thats a useful bit of kit for playing with electrics...
Sorry, yes - 130 degrees max internal which is about 85 degrees on the case. This website seems to think 70-80 degrees is normal - bit of a useless temperature that - hot enough to want to avoid touching but not hot enough to make tea.

80 degrees above ambient is pretty tepid in my garage at the moment so I don't think it will be a problem for a while :-)