Power Source: Hand Drill
Speed: 1,200 – 4,500
Cut Width (all materials): 1/8″

Maximum Thickness:
Mild Steel* : 14 gauge
Stainless Steel* : 18 gauge
Brass/Copper/Aluminum : 14 gauge
Plastic & Fiberglass : 3/32″
Laminate & Veneer : 3/32″

*use on flat or corrugated stock/cutting oil is recommended for maximum blade life
Minimum cutting speed 2,000RPM

One or both heads can be set to steerable
Turn the screw 1/4 turn using allen wrench provided
Head should turn freely but still be snug. Lock Tite can be used to secure set screw
Set heads in opposite direction for max versatility
Make sure you:

Bring drill to maximum RPM before cutting material
Keep speed constant while cutting
Don’t force Biter to cut faster

The Long Dog Biter allows you to reach material while being up to 6 inches away from it.

Perfect for working on the firewall in your car.

Also great for any kind of HVAC work where you need to make cuts but your tool will not fit into the duct work.

The Bad Dog Biter is the perfect tool for creating custom gage clusters.

Simply trace the shape you need, drill a half in hole for the Biter head and cut out the pattern.

Don't worry about it being perfect on the first pass, with the Bad Dog Biter its easy to go back and remove small amounts of extra material.

1. Remove metal retaining clip (A).
2. Remove the plastic end cap (B).
3. Loosen lock nut (C) & remove attached set screw (D) with allen wrench.
4. Insert new blade (E) with indentation facing up while gently pushing old blade through and out.
5. Align indentation in center of blade block (F).
6. Replace set screw (D) into indentation in new blade..
7. Re-tighten lock nut (C)
8. Grease
9. Replace end cap (B) & retaining clip (A).


Here is a selection of drills that spin
at 2,000 RPM and above:

-Dewalt DWD 112
-Dewalt D21002
-Milwaukee 0240-20
-Makita 6408K
-Porter Cable PC600D
-Hitachi D10VH/VF (A)

-Sharp bits drill best
-If the debris becomes dark while drilling,
the bit is dull. STOP drilling!
-Use the Diamond Wheel to sharpen the
bit to 118° flat grind or repair/replace the
bit under the Lifetime Guarantee
-Run the pivot along the straight edge
-Store properly in index to avoid chipping
-Keep flutes clear of debris
-Clean pitch from bits with oven cleaner
-Coat with oil to prevent rust
-Remove rust with steel wool


METAL (NOT Stainless)
Use a drill press
If you only have a hand drill, use heavy pressure and a cutting lubricant like Bad Dog Drool
DO NOT drill pilot hole

METAL (Stainless)
Use a “pulsing action” on the trigger to drill slow RPM when the material requires
Use a cutting lubricant to prevent blueing
DO NOT drill pilot hole

Know what kind of tile you’re drilling!
Porcelain and Glass tiles should be considered glass, very fragile and thus difficult to drill
Review the RPM guide for appropriate drill speeds

Tape over drilling area to help prevent chipping and cracking of material
DO NOT use a hammer drill
DO NOT drill pilot holes

Use hammer-action drill
Use cutting lubricant like Bad Dog Drool
DO NOT drill pilot hole

Use a regular hammer-action drill
Use hammer-action drill where rebar or other metal is present
DO NOT drill pilot hole

Clean debris regularly from shank when drilling in order to prevent clogging
DO NOT drill pilot hole

Best for rough drilling
For other projects, consider Bad Dog Rover Bits for your woodworking

Work on a flat surface
DO NOT let the body of the drill (not drill bit) slide into or hit the glass when the bit exits the hole
Use an oil based cutting lubricant
Mae a small reservoir from string or clay to hold the cutting lubricant in the drilling area
Drill pilot hole

Review the RPM Guide below
Adjust the drilling speed to conform to each material as it is being drilled