Andrew, both the HME forge/brazing hearth and the Flamefast units are a pretty much standard piece of technology workshop equipment in schools, ive used both makes numerous times,yes they are ok but i always thought there was more flame than heat it was if the air/gas mix wasnt right. and that was the same with every one i used. i never used one on propane only natural gas. I did like the ceramic chip forges a no mess no fuss very usable unit, used to have to check them before lighting because the kids ( little darlings) liked to bury flammable items under them ready for the unwary or green teacher. interested to hear your findinga when its a runner,
John