Just a point of interest if you've bought one;
I disassembled mine today and found the nut holding the belt spindle and the grinding wheel were both very lose. The spindle nut had come undone by several turns which was a bit worrying.
I'm altering mine to take a longer belt. If anyone needs to take theirs apart, be warned that the heads on all the screws are rubbish. The steel is very soft and heads will round very easily. Some have a nut on the backs so it's easier to remove the nut first from behind.