This machine can be very troublesome if not operated properly. The primary problem is that sanding spindles can be very difficult to remove from the machine if not installed properly. The tapered spindle shaft can be jammed so tightly in the main shaft of the machine that extraordinary force is required to remove them, and this almost always results in galling and scoring of the spindle and main shaft and distortion of the jam nuts at the top of the main shaft. So far, we have been able to repair most of the damage we have experienced, but we have been lucky. If damage occurs that is not repairable, it is likely that the machine will be out of service permanently, because most parts are no longer available from the manufacturer and part retailers. If members want to retain the use of this machine, they must closely follow the instructions that are posted above the machine. (See photos below.) As with all the machines in the shop, make sure you have had a check-out, read the owner's manual before operating the first time and contact a monitor if you have questions. If you think a spindle is jammed in the machine, contact a monitor or club officer. Our thanks to Larry Miller for making the sign and keeping the machine in operating condition.