Do you need some sandblasting gloves?  If you sandblast a lot, then odds are you will need to buy gloves every once in awhile since they tend to wear out because of all the abrading of the sand that hits the exterior part of the gloves.  Also the inside of the glove can get become unsanitary because hands usually sweat from each use.

Changing the sandblasting gloves will be needed after lots of blasting.  Whether your using a sandblaster cabinet or not, gloves should be used to prevent the abrasive from cutting your hands and arms.  It can be very painful if it strikes your body and skin can come off easily.  Best practices are always safety practices.