by Shrub » 8 Jan 2007 8:38
Nothing to worry about, once it gets big enough to be touching the wheel turn off and unplug the machine and then scrape the gunk out with a screwdriver or such like,
You may get away with that or you may have to take the wheel covers off and get at it that way but even if it touches the wheel al it does is stop it getting any higher, its only fileings and if any hits the wheel like falling off for example it just instantly breaks back to the dust it once was,
Dont worry but keep your grinder clean as much as possable, when things build up clean them out,