Learner Self-reflection 2 – 24351 (v3) Demonstrate knowledge of and use fixed machinery in the construction of BCATS projects

Student name:

This vertical drill press is not being used correctly. Identify THREE errors in how it is being used and their potential consequences.

Error 1

Potential consequence

Error 2

Potential consequence

Error 3

Potential consequence

From the list of drill bits below, identify the most appropriate drill bit for each of the given tasks.

Standard twist drill	Brad bit	Spade bit
Forstner bit	Combination auger bit	Hole saw
Countersink/counter-bore combination set

Task	Appropriate bit
1	Drill a 25 mm hole through 150mm thick timber.
2	Drill a 10mm dowel hole.
3	Drill two overlapping holes.
4	Drill a 6mm hole through a steel bar.
5	Prepare the pilot, clearance and countersink holes for 25 individual screws.
6	Drill a 75mm hole through a fibreglass panel.
7	Drill a 25mm hole through 50mm thick timber.
8	Drill a 30mm hole through 10mm plywood.

What is likely to happen to the work if you force the drill to cut straight through it in a single action?

What are the advantages of using a drill press over a hand held electric drill?

Why should large diameter drills, such as hole saws, be used at low speeds?

What could happen if your hair got tangled in a moving drill bit?

What is likely to happen if you don’t keep your hand out of line with the drill bit when drilling holes?