Grizzly T10538 Leaflet
-2-
t10538 drilling set
•
uniform support under the workpiece is
essential to prevent it from breaking. place a
backing board under the workpiece to sup-
port it and reduce chip-out.
essential to prevent it from breaking. place a
backing board under the workpiece to sup-
port it and reduce chip-out.
•
to reduce chip-out, score one side of the
workpiece first by drilling partially into it, then
flip the workpiece over and drill through it.
workpiece first by drilling partially into it, then
flip the workpiece over and drill through it.
•
if using a drill press with a cast iron table,
take steps to protect it from rust. spray the
table down with a liberal coating of oil and
make sure the backing board completely cov-
ers the table.
take steps to protect it from rust. spray the
table down with a liberal coating of oil and
make sure the backing board completely cov-
ers the table.
•
Make sure workpieces are properly secured.
•
Make sure the workpiece is clean and moist
so the suction cup grips the workpiece.
so the suction cup grips the workpiece.
•
to avoid making a mess, find a controlled
way to add a small amount of water (e.g. 1
teaspoon) to the drilling area at a time. eye
droppers or spray bottles work well.
way to add a small amount of water (e.g. 1
teaspoon) to the drilling area at a time. eye
droppers or spray bottles work well.
•
the amount of water required to properly
lubricate bits depends on the porosity of the
workpiece. a good rule-of-thumb is to start
with a puddle of water approximately the
same diameter as the bit. non-porous mate-
rial, such as glass or marble, may not need
additional water (depending on the thickness).
porous material, such as slate or tile, slowly
absorbs water, requiring it to be constantly
replaced. Most importantly, never allow the
bit to run dry.
lubricate bits depends on the porosity of the
workpiece. a good rule-of-thumb is to start
with a puddle of water approximately the
same diameter as the bit. non-porous mate-
rial, such as glass or marble, may not need
additional water (depending on the thickness).
porous material, such as slate or tile, slowly
absorbs water, requiring it to be constantly
replaced. Most importantly, never allow the
bit to run dry.
•
add water if the slurry becomes too thick.
Move the bit up and down while drilling so
water flows back into the cutting groove, cool-
ing the bit.
Move the bit up and down while drilling so
water flows back into the cutting groove, cool-
ing the bit.
•
use minimal pressure while drilling to avoid
breaking the workpiece.
breaking the workpiece.
•
always use the guide when drilling with a
handheld drill.
handheld drill.
•
decrease pressure when the bit gets close
to the bottom of the hole. this will minimize
chip-out.
to the bottom of the hole. this will minimize
chip-out.
•
Clean bits after each use.
Operation Tips
2. loosen the lock knobs, then slide the plate
back enough to pour a small amount of water
into the guide hole.
into the guide hole.
3. insert the bit into the guide hole, slide the
plate cutout against the bit until snug, then
tighten the knobs. use the small cutout for
tighten the knobs. use the small cutout for
3
⁄
16
"–
1
⁄
2
" bits; the large cutout for
3
⁄
4
"–1
3
⁄
8
" bits.
4. tug the guide to make sure it does not move.
if it does move, unlock the lock levers and
repeat
repeat
Steps 2–3.
5. turn the drill ON, begin drilling. add water to
the guide as needed to maintain a slurry.
6. When the hole is complete, loosen the lock
knobs, unlock the levers, and remove the
guide.
guide.
Guide Setup & Operation
if using a handheld drill, always use the included
guide to keep the bit centered.
guide to keep the bit centered.
To set up and operate the guide:
1. press the guide down, then flip the lock
levers over to secure the guide, as shown in
figure 2.
•
never use the bits in an impact hammer.
doing so will cause the tip of the bit to split
and shatter the workpiece.
doing so will cause the tip of the bit to split
and shatter the workpiece.
•
Follow all safety and operation instructions for
your drill press or handheld drill. take special
care to avoid exposing electrical equipment
to water as accidental contact with water
could cause electrocution.
your drill press or handheld drill. take special
care to avoid exposing electrical equipment
to water as accidental contact with water
could cause electrocution.
figure 2. Model t10538 guide locked and setup
for drilling.
Bit
lock
lever
plate
guide hole
lock
Knob