Q&A's (Paper 3) - Resistant Materials

ANSWER: 

Damage: bruising to softwood, scratching, crushing, marking, spoiling, marked (1)

Prevention: use of scrap wood, sponge, cardboard between cramp and softwood (1)

GUIDANCE:

Not: ‘crack’,’ break’ or ‘snap’

ANSWER:

Sliding bevel: to mark out chamfer or sides of slot. Mark out angle (1)

Tenon saw: to saw down the sides of the slot or chamfer, cut straight lines (1)

Bevel-edge chisel: to cut out/ remove the waste after sawing (1)

GUIDANCE:

Must relate to the stand

Not: ‘mark out’ on its own

Not: ‘cut out’ on its own

Consider sequence when awarding marks

ANSWER:

Hard (1)

ANSWER:

Sheet A: mould too deep, too tall, too high (1)

Sheet B: moulds too close together, too many moulds on 1 sheet (1)

ANSWER:

Temporarily: nut and bolt, nut and screw, self tapping screw (1)

Permanently: rivets, pop rivets (1)

GUIDANCE:

For (1) mark nut and bolt or nut and screw.

Do not accept heat processes or gluing.

Not ‘bolt’ or ‘screw’ on its own

ANSWER:

(a) Hole A hole saw, tank cutter, forstner bit (1)

Hole B forstner, hole saw, sawtooth, flat bits (1)

Hole C twist drill, forstner bit (1)

GUIDANCE:

Only accept name of bit used once

(b) Splitting can occur on the underside of the sheet

Snagging/spinning if not secured properly, spinning, splinters,

splintering

ANSWER:

Model toy car: die casting (1)

Guttering: extrusion (1)

GUIDANCE:

Not ‘casting’

ANSWER:

A Rebate 0–2

B Groove 0–2

GUIDANCE:

Award (0–2) dependent on accuracy of drawings. Do not reward drawings with added pieces of wood to make rebate or groove. Accept rebate drawn as part of a half lapped joint = (2) Grooves drawn in end or across the grain = (1) Award (1) mark for routered groove. Rebate and groove must be drawn on Fig.9.1 otherwise (0) marks

ANSWER:

(a) Anodising, electroplating, electrolysis (1)

(b) To prevent corrosion, protect, hardwearing, durable, long lasting (1)