BM 1609929Y03
PUNCH AND DIE LUbRICATION
Proper lubrication is essential to prolong punch and die life, and is achieved by occasionally fully submersing the punch and die in a small container of the proper lubricant.
To further ensure a smooth cut and long punch life, always lubricate the cutting path with cutting oil. When cutting steel or stainless steel, lubricate path of cut before starting work. When cutting aluminum, lubricate path of cut while making the cut. Since the punch cuts on
the downstroke, the upper side of the cut should be lubricated.
When cutting steel, use a cutting oil or an SAE 30 weight oil.
When cutting aluminum, a mixture of 7 parts kerosene and 3 parts turpentine should be used.
Should punch jam, immediately switch off nibbler,
Tool Tips
The corrugated nibbler is especially designed for working with corrugated sheets of both trapezoidal and rectangular profiles.
Always use both hands to guide the nibbler.
Do not use force; this will lead to premature die and punch wear.
Before running the nibbler, be sure the punch and die are properly lubricated. See "Punch and Die Lubrication" section.
Never start the nibbler with the punch and die in contact with the material being cut.
Always be sure material is resting on lower die during operation.
Nibbling to scribed lines - For straight cutting, secure the die from rotating, by tightening the retaining screw. Straight cuts are easily made by guiding the nibbler along a ruler edge.
Curve cutting - For curve cutting, loosen the retaining screw. The die is then free to rotate and position itself in the direction of cut.
Internal cuts - For internal cuts, a starting hole of 9/16" (16mm) is required, so the die can be inserted.
Nibbling to template - The bottom of the die traces the template. Note that due to a distance of 3/16" (4.5mm) between the template and cutting edge of the die on either side, the
Freehand cutting - For easy movement of die about the punch, additional accessories are required. Accessory die holder and dies for corrugated or flat stock may be purchased from your Bosch distributor. See the Bosch Catalog for accessory part numbers.
