Hi Art,
The belt grinder turns away from me, its a special model sold by a local saddlemaker supply shop. About the heat, there is always a bowl of water to cool the blade. I use the water every few seconds.
Unfortunatly I had difficulties to translate "unsupported belt" and "platen support"
To sharpen a new knife it is not easy . Especially to learn it without someone to show and assist, no matter what kind of sharpening system is used maybe frustrating.
Gesa