The document discusses two types of machine drills - the bench drill and the pillar drill. The bench drill is bolted to a workbench and is used for drilling wood, plastic, and metal. The larger pillar drill has a free-standing long column, making it suitable for drilling larger holes. Both drills require safety precautions like using guards and goggles and clamping materials to avoid injury.

1. MACHINE DRILLS

2. BENCH DRILL
■ The bench drill is used for
drilling holes through
materials including a
range of woods, plastics
and metals.
■ It is normally bolted to a
bench so that it cannot be
pushed over.
■ Larger pieces of material
can be drilled safely.

3. Parts of the Bench Drill

4. PILLAR DRILL
■ The larger version of
the machine drill is
called the pillar drill.
■ This has a long column
which allows it to be
free standing.
■ The longer column
makes it particularly
suited for larger holes
using forstner bits or a
hole saws.

5. Parts of the Pillar Drill

6. SAFETY
1. Always use the plastic guard.
2.Wear goggles when drilling materials.
3. Clamp the materials down or use a
machine vice.
4. Never hold materials by hand while
drilling.
5. Always allow the ‘chippings’ to clear the
drill by drilling a small amount at a time.
6. Follow all instructions from the teacher
carefully.