Question

1. a bar clamp has an advantage when:

a) thick metal is being clamped.
b) clamping over greater distances.
c) material needs to be clamped to a bar.
d) pressure is applied in one spot.

1. a 32 teeth per inch hacksaw blade is the best choice for cutting:

a) hard material.
b) soft material.
c) thin stock.
d) thick stock.

1. clamping the work - piece between two pieces of wood is an effective way to hacksaw:

a) soft material.
b) hard material.
c) thin material.
d) non - ferrous material.

1. files are classified by the:

a) job you have been asked to do.
b) length, shape and cut.
c) size, width and kind of material.
d) shape, hardness, thickness and cut.

1. explain why filing is done only on the forward stroke.
2. serrated blade snips have an advantage over tinners snips when:

a) the metal is thicker than 16 gauge.
b) 14 - gauge galvanized iron is being cut.
c) non - ferrous metals are to be cut.
d) cutting smaller more intricate patterns.

1. tinners snips are sized according to the:

a) length of cut per stroke.
b) maximum jaw opening.
c) thickness that can be cut.
d) overall length of the tool.

1. the cutting edge of a cold chisel should be prepared to a ____ deg most materials and up to ____ degrees for very hard materials.

Explanation:

1. A bar - clamp is useful for clamping over greater distances.
2. A 32 teeth per inch hacksaw blade is good for thin stock as it provides a finer cut.
3. Clamping the workpiece between two pieces of wood is effective for soft material to prevent damage.
4. Files are classified by length, shape and cut.
5. Filing is done only on the forward stroke because the cutting teeth are designed to cut in one direction; on the backward stroke, they do not cut and may damage the surface or the file itself.
6. Serrated blade snips have an advantage over tinners' snips when cutting smaller more intricate patterns due to their serrated edge which grips better.
7. Tinners' snips are sized according to the maximum jaw opening.
8. The cutting edge of a cold chisel should be prepared to a 60 - degree angle for most materials and up to 70 degrees for very hard materials.

Answer:

1. b) clamping over greater distances.
2. c) thin stock.
3. a) soft material.
4. b) length, shape and cut.
5. Filing teeth are designed to cut in one direction; backward stroke may damage surface or file.
6. d) cutting smaller more intricate patterns.
7. b) maximum jaw opening.
8. 60; 70