Challenge JF Technical reference manual

F.330-J
August 2015
MODEL JF
Instruction and Parts Manual
Serial Numbers:
975060 through 159999,
JFDR-A-150000 and up
Sold and Serviced by
The Challenge Machinery Company
6125 Norton Center Drive
Norton Shores, MI 49441-6081 USA
ChallengeMachinery.com
The Challenge Machinery Company provides owner's manuals on its
products solely as a courtesy to its customers. See the information below
before using this manual.
These manuals are for reference only. These manuals include products which are noncurrent,
unsupported or no longer produced by The Challenge Machinery Company, and are provided solely as
an accommodation to our customers. By providing these manuals, The Challenge Machinery Company
makes no representation or warranty as to the products, their current condition, or their suitability or fitness
for use in any particular application, which are the sole and independent responsibility of the product
owner and user.
Older products may not comply with current safety procedures, guidelines or regulations, and it
is the product owner's and user's responsibility to evaluate the suitability and fitness of the
products in their current use and application. The Challenge Machinery Company makes no
representation, warranty or recommendation regarding any modifications which may be required
on non-current or unsupported products. The Challenge Machinery Company assumes no liability
for any modification or alteration to any Challenge product, and any such modification or
alteration to any Challenge product is not authorized by The Challenge Machinery Company. The
availability of these manuals is solely for the purpose of providing reference information for the products.
This manual may not be complete in all aspects of product maintenance and repair. All products should
be used only by qualified and properly trained personnel, following proper safety procedures. All
products should be regularly inspected and maintained, and their condition, application and use should
be periodically evaluated by qualified personnel. Only qualified and properly trained technicians should
perform maintenance, repair and replacement procedures. Attempting these procedures without proper
training may cause machine damage or operator injury!
Products may be unsupported by The Challenge Machinery Company due to age or the unavailability of
parts from their original manufacturer. No parts or product support will be available to repair or maintain
unsupported products. Older products may not be UL listed (if the product does not have a UL label it is
not a listed product), and may not comply with applicable installation or other regulations or requirements
if relocated to a new facility. Many municipalities require a product to be UL listed before an electrician
will connect power to them. Often the cost of updating an older product to comply with current safety
regulations is greater than the value of the product.

F.330-J/APR 97
2
INTRODUCTION
WELCOME to the family of Challenge® users. Challenge has been developing and manufacturing Graphics Arts
Equipment for over 100 years and is today one of the world’s leading producers and distributors of Paper Cutters,
Paper Drills and Bindery Equipment.
SAFETY ALERT! This symbol means CAUTION OR WARNING: Personal safety instructions!
Pay special attention to the instructions in bold type. Personal injury may result if the precautions are
not read and followed. See SAFETY PRECAUTIONS, page 6.
•This machine is designed for ONE PERSON OPERATION ONLY!
•Always DISCONNECT THE POWER before working on this machine.
•DO NOT OPERATE WITH ANY GUARDS REMOVED! Replace all guards before operating.
•CRUSH HAZARD - Keep hands, hair, cleaning rags, & loose clothing away from drills.
READ THIS MANUAL BEFORE OPERATING! Follow precautions and instructions given and you should have
years of trouble-free operation. If after reading the manual questions still remain, contact your Authorized Challenge
Dealer.
FOR PARTS AND SERVICE contact the Authorized Challenge Dealer from whom you purchased your machine.
Use the illustrations and parts lists at the back of this manual to identify the correct parts needed. Always give
the SERIAL NUMBER and MODEL of your machine to insure that the correct parts are sent as soon as possible.
Take a few minutes right now to RECORD YOUR MACHINE SERIAL NUMBER in the space provided on the
front cover of this manual. Also be sure to fill out the warranty card accompanying this manual and return it
DIRECT TO CHALLENGE.
If you bought a used machine, it is important to have the following information on record at Challenge. Copy this
page, fill in the information and send it care of: The Challenge Service Department, 6125 Norton Center Drive,
Norton Shores, MI 49441-6081.
CHALLENGE MODEL SERIAL NUMBER
ATTN COMPANY
ADDRESS
CITY STATE ZIP
PHONE DATE INSTALLED
DEALER’S NAME AND CITY
PLEASE REVIEW THE ENCLOSED WARRANTY SHEET!
It is very important that you read and understand the conditions outlined in the Warranty Information Sheet
included with the manual information package.
The Warranty Information Sheet must be filled out completely, returned, and be ON-FILE at THE CHALLENGE
MACHINERY COMPANY in order for the warranty to be issued for this machine.
WARRANTY INFORMATION
Challenge® is a registered trademark of The Challenge Machinery Company. 6125 Norton Center Drive, Norton Shores, MI 49441-6081.
Copyright © 1997 by The Challenge Machinery Company. All rights reserved. Printed in the U.S.A.

3
F.330-J/APR 97
PACKING LIST
Part No. Description Qty.
Basic Machine..................................................................1
A-6050-1 Backgage Assembly .........................................................1
A-3975 Cutting stick knockout .......................................................1
A-4690-3 Table Assembly................................................................1
5309 Adjustment Rod................................................................1
F-330-J Instruction & Parts Manual ................................................1
K-4620 Tool Kit - Includes the following: .........................................1
CD-4 1/4” (64mm) Hollow Drill ...............................................1
CD-5 5/16” (79mm) Hollow Drill .............................................1
K-85 Drift hole cover ............................................................1
W-141 1/8” Allen Wrench ........................................................1
W-154 3/32” Allen Wrench ......................................................1
S-1615 Cork ............................................................................1
S-2021 Spring Plunger.............................................................1
3949 Paper shims (cutting block) ..........................................4
A-4682 Cutting Blocks (1 dozen)...............................................1
4685 Drill cleaner .................................................................1
4687 Drill drift ......................................................................1
4688 Lubrication stick ...........................................................1

F.330-J/APR 97
4
SPECIFICATIONS
Drilling
Drill Diameters Available (2” capacity) 13 sizes: 1/8” to 1/2” (3 mm - 13 mm)
Maximum Drilling Capacity* 2” (5 cm)
Minimum Distance Between Holes
(with adjustable stops) 3/8” (10 mm)
(with fixed gage) 1/4” (6.4 mm)
Adjustable Range
(bit to side guide) 0 to 18-1/2” (0 to 47 cm)
(bit to backgage) 0 to 4” (0 to 10 cm)
Dimensions
Table Height 38” (97 cm)
Overall Height 60” (142 cm)
Floor Space Required 32” x 42” (81 cm x 107 cm)
Net Weight (Approximate) 154 lbs (70 kg)
Shipping Weight (Approximate) 178 lbs (81 kg)
Electrical
115 Volts, 1 Phase, 60 Hz, AC. Service size: 15 Amps. Motor: 1/4 HP, 5.6 Amps
230 Volts, 1 Phase, 60 Hz, AC. Service size: 15 Amps. Motor: 1/4 HP, 2.8 Amps
115 Volts, 1 Phase, 50 Hz, AC. Service size: 15 Amps. Motor: 1/4 HP, 5.6 Amps
230 Volts, 1 Phase, 50 Hz, AC. Service size: 15 Amps. Motor: 1/4 HP, 2.8 Amps
Sound Emission
A-weighted sound pressure level measured in an enclosed room at 6 feet (183 cm)
above floor:
Machine running: Less than 70 dB
Machine drilling paper: Less than 70 dB
* Smaller diameter drills have less capacity
Challenge reserves the right to make changes to any product or specification without notice and without
incurring responsibility to existing units.

5
F.330-J/APR 97
TABLE OF CONTENTS
INTRODUCTION......................................................................................2
PACKING LIST ........................................................................................3
SPECIFICATIONS ....................................................................................4
SAFETY PRECAUTIONS .........................................................................6
CAUTION: POWER LOCK-OUT PROCEDURE .........................................6
WARNING LABEL DEFINITIONS ..............................................................7
INSTALLATION........................................................................................8
Uncrating the Paper Drill .....................................................................8
Installing the Table .............................................................................8
Installing the Backgage .......................................................................8
Installing the Table Height Adjustment Rod...........................................8
Final Installation .................................................................................8
Power Hook Up ..................................................................................8
OPERATION............................................................................................8
Starting the Machine ...........................................................................8
Operating the Drill...............................................................................9
Using the Auto-Trip Side Guide ...........................................................9
Setting the Side Guide Stops ...............................................................9
ROUTINE ADJUSTMENTS .......................................................................9
Adjusting the Vertical Stroke................................................................9
Removing the Cutting Block ................................................................9
Removing Drills from the Chuck...........................................................9
ROUTINE MAINTENANCE .......................................................................9
Daily ..................................................................................................9
Weekly ............................................................................................10
TROUBLE SHOOTING ...........................................................................10
DRILLING TIPS......................................................................................10
PARTS LISTS
MAIN ASSEMBLY - JF DRILL .................................................................12
AUTO-TRIP BACKGAGE ASSEMBLY .....................................................14
TABLE ASSEMBLY ................................................................................15
ACCESSORIES AND ATTACHMENTS
SLITTING AND SLOTTING ATTACHMENTS ...........................................16
LIGHT DUTY CORNERING ATTACHMENT.............................................18
CORNER-MATIC HEAVY DUTY CORNERING ATTACHMENT ................20
ACCESSORIES FOR CHALLENGE PAPER DRILLING MACHINES..........23

F.330-J/APR 97
6
SAFETY PRECAUTIONS
•This machine is designed and safeguarded for ONE PERSON operation. NEVER operate the machine
with more than one person.
•Safety of this machine is the responsibility of the user and operator. Use good judgement and com-
mon sense when working with and around this machine.
•READ and understand all instructions thoroughly before using the machine. If questions still remain,
call your Authorized Challenge Dealer - Failure to understand operating instructions may result in
personal injury.
•Only trained and authorized persons should operate the machine.
•DO NOT ALTER SAFETY GUARDS OR DEVICES, they are for your protection and should not be al-
tered or removed. Severe lacerations could result.
•DISCONNECT POWER before cleaning, lubricating, servicing, or making adjustments not requiring
power. Lock the disconnect switch in the OFF position, see Power Lockout Procedure below.
•HIGH SPEED DRILL - Keep rags, loose clothing and long hair away form rotating drill. Personal injury
could result from items being caught on drill.
•OBSERVE ALL CAUTION PLATES AND LABELS on this machine.
•KEEP FOREIGN OBJECTS off table and away from drill.
•BE EXTREMELY CAREFUL when handling and changing the drills. Severe lacerations or dismember-
ment could result from careless handling procedure.
•KEEP THE FLOOR around the machine free of trim, debris, oil and grease.
•If the machine sounds or operates abnormally, turn it off and consult the Trouble Shooting section of
this manual. If the problem cannot be corrected, have it checked by a qualified service person or your
AuthorizedChallengeDealer.
•CRUSH HAZARD, keep feet off the pedal when handling paper under the clamp. DO NOT REST FOOT
ON PEDAL at any time!
•DO NOT REACH UNDER THE DRILL AND CLAMP AREA!
•DO NOT OPERATE WITH ANY GUARDS REMOVED! Replace all guards after adjusting, lubricating or
servicing the machine.
•SEVERE LACERATIONS - Contact with high speed drill could cause severe injury. Always turn ma-
chine off and wait for drill to stop before removing drill bits. Keep hands away from drill(s) when
operating.
CAUTION: POWER LOCK-OUT PROCEDURE
For maximum safety and to prevent unauthorized
use, turn the power switch to the OFF position and
disconnect the power cord whenever adjusting,
lubricating, or making repairs to the machine.
(fig. 1)
This safety symbol means CAUTION/WARNING - PERSONAL SAFETY INSTRUCTION. Read
the instructions because it has to do with safety. Failure to comply with the following instruc-
tions may result in personal injury.

7
F.330-J/APR 97
SINGLE OPERATOR
SHOCK HAZARD
SHOCK HAZARD
HAZARDOUS AREA
Do not operate with more than one person.
Disconnect power before removing cover. Replace
cover before operation.
Disconnect power before removing cover. Replace
cover before operation.
Disconnect power before cleaning, servicing, or making
adjustments not requiring power. Do not alter safety
guards or devices, they are for your protection. Replace
all guards, do not operate with any guards removed.
WARNING LABEL DEFINITIONS

F.330-J/APR 97
8
INSTALLATION
Uncrating the Paper Drill
Unless otherwise specified, this machine is shipped in
a cardboard container with the cutting stick knockout,
backgage, and table removed. These items are packed
separately. The machine should be unpacked carefully
so as not to damage any of the machine parts.
Immediately after uncrating, check off parts received
against the packing list. Also, examine for any physical
signs of damage incurred during shipment. The
machine is inspected before and after crating at the
factory. The responsibility for filing a claim against the
carrier for damages incurred during shipment rests with
the receiver of the goods (FOB our factory).
The machine is held in place on its shipping skid by
means of wooden blocks. Remove these blocks and
then carefully position the machine on the floor.
Clean all parts with a commercial cleaning solvent (such
as C.R.C.) before installing or using the machine.
Installing the Table
The table is held in place with four socket head machine
screws and washers provided. Simply position the
table, line up the holes, and tighten the screws.
Installing the Backgage
To install the backgage you must first remove the
pressure foot assembly (held in place with two knurled
screws). While facing the front of the machine, hold
the backgage with the opening toward you and slip it
on the front of the table. Then slide the gage back on
the table and fasten to the table with the two thumb
screws provided.
Installing the Table Height Adjustment Rod
First remove the back cover. Then, with the spring
plunger out of the adjustment rod, turn the adjustment
rod on the threaded rod until approximately 1” (2 cm)
of thread are engaged. Next, install the spring plunger
by turning it in all the way, then turn back 1/4 to 1/2
turn (see fig. 2).
Final Installation
Attach the pressure foot assembly in place with the
two knurled screws provided.
Place the cutting stick knockout in position. Place paper
shims as necessary on the cutting stick knockout.
Place the drill block in the table.
Insert the tapered head of the hollow drill into the
spindle. Be sure the drift hole cover is in place before
operation.
Power Hook Up
The JF Drill is factory wired to the customer’s
specifications. It is important that the power source
complies with the voltage and current specified on the
name plate of this machine. We recommend that this
machine be plugged into a 15 amp circuit.
OPERATION
Starting the Machine
The power for this machine is supplied by a single motor
which directly drives the spindle. It is started and
stopped by a rocker switch located on the inside of the
top cover toward the right side of the machine (fig. 3)
NOTE: All guards and instruction plates are in-
stalled for your safety and information and must
remain on the machine as shipped from the fac-
tory.
Top Cover Adjustment
Rod
Threaded Rod
Spring Plunger fig. 2
“ON”
Inside of top cover
“OFF”
fig. 3

9
F.330-J/APR 97
Operating the Drill
First, be sure that the switch is turned on. Depressing
the foot treadle brings the drill down through the lift of
stock. After the drill reaches the bottom of its stroke,
release the treadle and the drill return to its top position.
The foot treadle can be released at any time during the
downward stroke of the drill, thus preventing costly
errors. Never rest your foot on the treadle without
intending to bring down the drill.
Using the Auto-Trip Side Guide
As each hole is drilled, the side guide is automatically
tripped, and as soon as the drill clears the stock on its
upstroke, the guide is free to move to its next stop.
This is accomplished by pushing the stock to the left
and moving the guide at the same time. When drilling
only one hole jobs, when slotting, or when cornering,
the automatic trip arm should be locked in its up position
by tightening the thumbscrew.
Setting the Side Guide Stops
First set the rear gage to the desired back margin. Be
sure both sides are set to the same dimension and
tighten the two thumbscrews. Next, loosen the set
screws which hold the stops in place and slide the stops
to the desired dimension between holes (a scale in the
backgage is provided for this purpose). The first stop
is always set for the distance from the edge of the sheet
to the center of the first hole. Final adjusting or centering
of the holes is accomplished with the knurled screw at
the left end of the side guide arm. Loosening the finger
screw on the top of the side guide arm allows the
knurled screw to be turned in or out thus increasing or
decreasing the distance to the centerline of the drill
(and hole). Before drilling a full lift of stock, it is
recommended that a sample sheet be drilled and
measured to check this fine adjustment. Be sure that
the finger screw is retightened before drilling.
The automatic trip gage comes equipped with seven
stops. Additional stops can be purchased at a very
nominal price. Challenge fixed index gages are
recommended where the same job is to be handled
over and over again. They are easily and quickly
attached and removed. See page 25 for more details.
NOTE: When drilling narrow strips, the side guide roller
assembly should be mounted on the inside of the side
guide assembly.
ROUTINE ADJUSTMENTS
Adjusting the Vertical Stroke
Always turn the adjustment rod in (clockwise) all the
way when changing drills (fig. 2, pg. 8). With the new
drill in place, turn the adjustment rod out (counter
clockwise) in small increments until the drill will just cut
through the bottom sheet of a lift before reaching the
bottom of its stroke. Do not set the spindle so low that
the drill “burns” into the cutting block at the bottom of
its stroke.
It is important to adjust the vertical stroke whenever
changing drills or when slotting or cornering. This will
prevent the drill or knife from cutting too deep into the
cutting block.
Removing the Cutting Block
To remove the cutting block, simply reach under the
table and push up on the cutting stick knockout.
Removing Drills from the Chuck
Insert the drill drift, flat side down, into the hole in the
chuck and lift upward. The upward movement forces
the drill down and releases it from the chuck. The spring
clip on the end of the chuck is provided to cover the
drift hole and prevent paper chips from flying out when
drilling small diameter holes.
NOTE: Sometimes the drills become so firmly seated
in the chuck that it is necessary to tap on the drift to get
the drill to release.
ROUTINE MAINTENANCE
Service Checklist
Daily
1. Sharpen the hollow drill often and reset the spindle
adjustment rod if needed.
2. Lubricate the hollow drill frequently with the Drill-
ease provided.
3. For better hollow drill life, remove the drill when
not in use and soak in light oil or kerosene.
CAUTION: Always handle drills with
care to avoid severe lacerations. Even
dull drills are sharp enough to cause
lacerations.

F.330-J/APR 97
10
TROUBLE SHOOTING
(Refer to parts lists for part location, number, and description.)
Problem Area to Check Solution
1. Lack of power Check voltage at machine - may be Remove other machinery on line or
low. provide a separate branch circuit.
Check for bind in treadle assembly. Free bind, clean, and oil.
2. Drill head won’t return. Check lift springs - may be broken or Pry up head, clean and oil shafts.
stuck. (Replace springs if necessary.)
3. Drill head won’t come down. Check for broken lift spring - may be Replace spring.
jammed.
DRILLING TIPS
Important! To prevent the drill from overheating, always avoid drilling too slowly. The drill should be brought
down as rapidly as possible allowing the drills to easily cut through the paper.
Slotted Holes - Instead of punching slotted holes for five and seven hole universal binding work, save time and
cost by drilling a 1/2 inch diameter hole in place of the slot. The slot is only intended to allow the post or ring to be
used in either location, and the large hole permits this.
Plastic Bindings - Drilling holes for plastic bindings, instead of punching them, is practical and saves a great
deal of time, particularly on long run jobs.
Keep Drills Sharp - A dull drill is the major cause of drill breakage and production tie-ups. Usually after three
hours of drilling, depending on the type of paper being processed, the drill should be sharpened. A dull drill
results in poor quality work.
Keep Drills Clean- A dirty and rusty drill will not permit the free upward passage of the drill chips. Pressure built
up by a clogged drill will split or break the drill. To keep it free from dirt or rust, clean the drill of all chips after each
use and apply a light oil to the inside and outside. Drills should be cleaned out immediately after each use. This
is particularly true if a coated or varnished stock has been drilled. On these jobs the coating on the chips
frequently fuse the chips into one solid mass when the drill cools, causing breakage the next time the drill is used.
Lubricate Drills- Lubrication assists in the passage of the chips and helps avoid overheating of the drills. Use
readily available stick lubricants for this purpose. Hold the end of the stick against the side of the rotating drill. Be
sure to touch the cutting edge with the lubricant also. Wipe off excess oil before drilling. CARE MUST ALWAYS
BE TAKEN WHEN HANDLING DRILLS.
Keep Spindle Clean - Clean out the drill spindle frequently. This will prevent any buildup in the spindle of the
drill.
Weekly
1. Clean guide bar shafts around frame and oil with
No. 30 oil.
2. Clean side guide shaft and oil with light oil.
3. Clean clevis pins and oil with light oil.

11
F.330-J/APR 97
DRILLING TIPS (cont.)
Set the Drills Correctly - Do not cut too deeply into the cutting block. The drill should just touch the block and
cleanly cut through the bottom sheet. During drilling, do not set the drill deeper into the block but change the
position of the block frequently. Drilling deeper into the block dulls the drills quickly. Use a piece of chipboard
underneath your stock. This will make handling the stock easier and will ensure that the last sheet is cut cleanly
through.
Check for Drill Wobble - If the spindle is badly worn or bent through misadjustment, have it replaced immediately.
A wobbly or loosely held drill will break.
Check Your Drill Sharpener - The cutting edge of the sharpening bit should be inspected frequently to make
certain that it is sharp and free of nicks. Never let a drill drop onto the sharpening bit. It will chip the sharpening
edge. Use gentle pressure when sharpening - let the sharpening bit do the work. Check the sharpness of the drill
after sharpening. The cutting edge should be razor sharp.
Just a little time and effort taken with each use of your paper drilling machine should result in trouble free operation
over many years.
PARTS CUSTOMERS: The Challenge Machinery Company provides parts with the express under-
standing that they are to replace parts found missing or no longer serviceable on equipment designed
and/or manufactured by Challenge. The Challenge Machinery Company assumes no liability for any
modification or alteration to any Challenge products, and any such modification or alteration to any
Challenge products is not authorized by The Challenge Machinery Company. Any modification or
alteration of any Challenge product will void any remaining warranty.

12
Main Assembly – A-4620-4 REV. G

13
Main Assembly – A-4620-4 REV. G

15
F.330-J/APR 97
TABLEASSEMBLY
A-4690-3 REV. E

F.330-J/APR 97
16
V-Slotting
To cut V-slot holes, first drill the round holes. Turn off
the power and remove the drill.
Remove the pressure foot by unscrewing the knurled
nuts.
Install the mounting bracket with the holder socket
screw facing the operator.
Attach the backgage fillers.
SLITTINGAND SLOTTING ATTACHMENTS
A-6410
3/16” Allen Wrench
W-130
Bracket
4684
Rear Gage Filler
6409
Screw
1/4-20 x 1”
V-slotting
Assembly
Knife Holder
4704
Knives (pair)
A4708
Knife Holder Plate
4707
Flat Head Screw
10-24 x 3/8”
Knife Thrust Block
4703
Screw
1/4-20 x 1/2”
WARNING: DISCONNECT POWER be-
fore cleaning, servicing, or lubricating
your drill.

17
F.330-J/APR 97
Next, attach the knife assembly. Align the blades to
the already drilled holes and tighten the holder socket
screw.
Reattach the pressure foot assembly using the two
knurled screws.
For best results, lay a sheet of chipboard underneath
your work and set the depth-of-cut so it just makes it
through the chipboard. The blades should not cut into
the wood block when slotting or slitting.
Slitting
For slitting work, remove the knife thrust block, take
out the left hand knife and set it aside.
Remove the right hand knife and position it in the left
hand knife slot.
Place the knife holder in the right hand knife slot and
replace the thrust block and screw. Replace the knife
holder in the mounting bracket and turn the holder in
the bracket to cut a straight slit. Make your first slit
farthest from the side guide*, then slit the other side of
the hole and proceed to the next slot position.
For narrow slots, position the side guide stops for the
first cut farthest from the side gage*. Leaving the side
gage at the same position, lift the side guide face and
turn it around.
Jog the stock square against the back and side gages
and make the second cut. Your slot is now complete.
Remember to return the side guide face to the standard
position before making the next slot.
*Always make the first cut farthest from the side gage.
This prevents draw on the paper that would give
irregular cuts.
NOTE: Maximum slitting and slotting capacity is
1/2” (13 mm). Be sure to check the stroke adjustment
to prevent the knives from cutting too deep into the
cutting block.
R.H. Knife
in L.H. Slot

F.330-J/APR 97
18
To install the cornering attachment, make sure the
power is locked out and then remove the hollow drill.
Next, remove the pressure foot by unscrewing the two
knurled nuts.
LIGHTDUTYCORNERINGATTACHMENT
A-6411
Now install the side gage spacer (JF only). The spacer
may be left in place for normal drilling, but must be
removed for drilling narrow strips.
Replace the wooded drill block with the three fiber
blocks.
Spacer
Knives available:
Straight
Diagonal
4741
1/8”
(3 mm)
4742
1/4”
(6 mm)
4743
7/16”
(11mm)
4744
(supplied)
1-1/2” Fiber Cutting
Blocks
KK-474
Rear Gage Filler
6412
Bracket
4684
Screw
1/4-20 x 1/2”
Side Guide
Spacer
4827
Blade
Holder Nut
4749
Knife
Screw
10-24 x 1”
Knife Holder
4746
3/16” Allen
Wrench
W-137
5/32” Allen Wrench
W-137
Screw
1/4-20 x 3/4”
WARNING: DISCONNECT POWER be-
fore cleaning, servicing, or lubricating
your drill.

19
F.330-J/APR 97
Install the rear gage filler block on the right side of the
backgage.
Install the cornering attachment bracket as follows:
When using the cornering knives, the knife holder
socket screw should face the rear of the machine; this
puts the bracket mounting holes in the rear position
and centers the knife on the cutting block.
When using the straight diagonal knife, the bracket is
reversed, with the holder socket screw facing the
operator. The holder mounting screws are then in the
forward position.
Install the knife holder assembly in the bracket and
tighten the knife holder socket screw. The knife holder
comes assembled with the knife installed. Double
check to make sure the knife blade is held firmly by
tightening the socket screw.
SocketScrew
Adjustments to the paper are made by positioning the
side and back gages. The knife is squared to the paper
by loosening the knife holder socket screw and rotating
the knife holder assembly so that the knife edges match
up to the sides of the paper.
Raise the auto trip mechanism and lock it out of the
way with the thumb screw.
Your Challenge paper drill is now ready to corner.
NOTE: Maximum cutting capacity is 1/2” (13 mm).
Be sure to check the stroke adjustment to prevent the
knife from cutting too deep into the cutting block.
Blade
Holder
Nut
Knife Holder
Knife
SocketScrew

F.330-J/APR 97
20
To install the cornering attachment, make sure the
power is locked out and then remove the hollow drill.
CORNER-MATICHEAVYDUTY CORNERINGATTACHMENT
A-4980
Next, remove the pressure foot by unscrewing the two
knurled nuts.
Replace the wooded drill block with the three fiber
blocks.
Move the backgage to the rear of the table and position
Knives available:
1/8”
(3 mm)
4981-2
1/4”
(6 mm)
4981-4
3/8”
(9.5 mm)
4981-6
7/16”
(11mm)
4981-7
1-1/2” Fiber Cutting
Blocks
KK-474
Knife Holder
Assembly
A-4980
Allen Wrenches:
1/8”W-141
5/32”W-137
3/16”W-130
Clamp
Spring
4992
Slide Rod
Spring
4985
WARNING: DISCONNECT POWER be-
fore cleaning, servicing, or lubricating
your drill.
Knife