Chicago Electric Magnesium Heavy Duty Low Speed 1/2" Drill 97594 - Manuel (Page 11)

Page 11 SKU 97594 For technical questions, please call 1-800-444-3353.
Keep the motor running when pull- 5.
ing the bit out of a completed hole to
prevent the bit from jamming.
Metal Drilling
Use high speed steel, carbide or spe- 1.
cialty bits for metal drilling.
Secure the work piece to keep it from
2.
moving during the drilling operation.
Use a punch to create a dimple for
3.
the bit to start.
Start by drilling slowly to keep the bit
4.
from moving away from your starting
point.
As the hole is established, increase
5.
tool speed. Do not go so fast or use
so much pressure that the bit heats
up. This can damage the bit and cre-
ate an irregular hole. For hard metal,
use cutting oil to keep the bit cool.
Since drilling in metal is a slow opera-
6.
tion, you may lock the Trigger in the
ON position to maintain a constant
speed and reduce fatigue.
When drilling large holes in metal,
7.
start by drilling a smaller pilot hole,
then using a larger bit for the final
size hole.
wood Drilling
Use high speed bits or bits specially 1.
designed for wood drilling, such as
brad point, spade bits, forstner bits,
etc.
Secure the work piece to keep it from
2.
moving during the drilling operation.
Start by drilling slowly to keep the bit
3.
from moving away from your starting
point. Increase speed as the hole is
established.
To prevent or reduce “break out”
4.
when the bit penetrates the work
piece, clamp a piece of scrap mate-
rial to the back of the work piece.
Do not lock the Trigger in the ON
5.
position, as the bit can easily jam in
wood and the motor must be stopped
quickly.