1. Guards

Notes

1. Guards on bench grinders should cover a) 1/4 of the wheel. b) 1/2 of the wheel. c) 1/2 of the wheel. d) 5/3 of the wheel. 2. The gap between the tool rest and the grindstone on a bench grinder should never be more than a) 1.6 mm (1/16"). b) 3 mm (1/8"). c) 6 mm (1/4"). d) 12 mm (1/2"). 3. A grinding wheel is classified by a) The size and type of abrasive and the type of bonding agent. b) The size and width of the stone. c) The outside diameter and the size of the arbor hole. d) The shape and colour of the wheel. 4. A safety specification to consider when selecting a grinding stone or disc is a) The grit size of the abrasive. b) The type of bonding material used. c) The rpm rating of the stone or disc. d) The size of the tool. 5. A dressing tool is used for a) Putting a fine finish on ground edges. b) Refacing the surface of grindstones. c) Squaring the tool rest to the grindstone. d) Checking the clearance between the grindstone and the rest. 6. Bouncing or heavy vibration of the workpiece when grinding are indications that the grindstone is a) A coarse grit. b) Travelling too fast. c) Out of round. d) Worn out. 7. Before installing a new grindstone, you need to a) Install...