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The Advantage of the FASSCO paper
knife... FASSCO F-3000 18% tungsten
inlaid high speed steel is the world's best made and longest lasting high speed
paper trimming knife on the market today.
The advantages of the FASSCO F-3000 paper
knife:
Confidence that only the best suited
materials will be used. All F-3000 high speed steel knives are made from a T1
inlay containing 18% tungsten. Expect 3-5 times longer life than standard
knives.
FASSCO F-3000 knife is the only knife that is heat
treated in a thermostatically controlled vacuum furnace. This expensive method
of heat treating ensures that the cutting edge has a uniform hardness. The
results are cleaner, longer lasting cuts between regrind. This optimal heat
treatment also makes the FASSCO F-3000 the easiest high speed steel knife to
resharpen and hone. All FASSCO F-3000 high speed steel
knives are made per OEM specifications, including the angle. Most of our
competitors standardize all angles at 24°. However, most European machine
builders specify a 22° angle. We guarantee our FASSCO
F-3000 paper trimming knives to outperform any high speed knife on the market
today.
Compare one FASSCO F-3000
knife to your present brand for:
Length of
service between regrinds. Straightness and fit. Accuracy of bevel. Sharpness and keen edge. |
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Schönenberger tungsten carbide knives
last longer! Constantly increasing
demands for improved productivity require extensive use of the most
wear-resistant materials available. Schönenberger tungsten carbide is the
ideal material for many applications due to its high hardness, high compressive
strength, resistance to high temperatures, dramatic wear-resistance and
excellent toughness. These and many other useful properties are the results of
the metallurgical structure of this composite material. Cobalt binders for
toughness and nickel alloy binders for corrosion resistance are the matrix for
the wear-resistant grains of tungsten carbide and its alloys. By varying the
binder content and size of tungsten carbide grains, we can achieve a wide range
of qualities for different applications.
The benefits of tungsten
carbide are many. Schönenberger tungsten carbide knives will perform 10 to
25 times longer than standard knives. The quality and accuracy of the products
are greatly improved, thus reducing rejections and increasing yields. With
knife changes reduced, regrinding costs are slashed.
Schönenberger
Megalife tungsten carbide is a new generation of carbide designed especially
for increased productivity.
Megalife carbide is a superfine micro-grain
material which displays an even higher wear resistance than our regular
carbide.
The advantages of Megalife
carbide over regular carbide:
Lasts 3 to 4 times longer
between regrinds.
Improves cutting quality while
reducing dust.
Higher compressive
strength of the micro grain structure reduces the tendency of cutting edge
nicking. |
Recommended bevels for Paper Cutting
Knives TOP |
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For
the European market all knives are supplied with a standard bevel of 22°.
Listed below are various materials and suggested bevels to assist you in
obtaining maximum benefit from your knives. |
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MATERIALS
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1 =
17° |
rubber tubes |
crude rubber |
soft rubber |
1 = 19° |
aluminum foils lead foil copy paper felt carbon
paper |
cork blotting paper NCR paper absorbent silk
paper plywood(max. 3mm) |
textile fabric velour paper wood pulp zinc foils tin
foils |
1 = 22° |
bible paper jointing paper normal printing paper felt
paper felt board glass paper greyboard |
hand board hard rubber wood board,
soft index cardboard caseboard lino |
postcard board PVC soft emery cloth writing
paper strawboard security paper celluloid |
1 = 23° |
leather |
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1 = 24° |
Astralon clear vision foil cellulose foils duplex
board |
duplex cardboard photo paper Manila
board pergamyne |
pressboard transformer pressboard transparent paper |
1 = 25° |
acetate foils cellulose acetate foils |
hardboard polyethylene foils |
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1 = 26° |
synthetic fiber paper |
transparent sheet |
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2 = 22°,1
= 19° (secondary bevel) |
laminate aluminum foil asbestos |
veneers |
PVC floor slab |
2 = 24°,1
= 22° (secondary bevel) |
cellophane double wax paper duplex paper label
paper |
rubber paper art paper leather board metal paper |
parchment paper PVC hard triplex board |
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Troubleshooting TOP |
Paper
cutters must be viewed as complete cuttings systems with many factors
contributing to the quality of the cut. Many cutter operators too quickly blame
the knife or the knife grinder for poor cutter performance when the fault is
elsewhere. We have listed some common problems encountered and their probable
causes to assist you in troubleshooting. |
WAVY CUT (A):
Vertical shading across edge of lift can be seen or felt as
wavy areas. |
CAUSE: |
CORRECTION: |
Heavy print in certain areas cause large thickness differences across
the sheets. This produces uneven clamp pressure in areas of dense print. The
knife finds these areas harder to cut since they are packed tighter and deflect
slightly. |
Evenly
distribute clamp pressure by applying felt or foam pad to face of
clamp. |
Knife burned in grinding causing soft spots that dull
quickly. |
Regrind knife
correctly taking off at least 1/16" width to remove damaged steel. |
Knife angle too sharp causing deflection in high density
areas. |
Increase bevel
angle by 2°, i.e., 22° to 24°. |
Inconsistent paper quality thickness. |
Change
paper. |
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WAVY CUT (B):
Diagonal shaded areas in direction of knife travel can be seen
or felt. TOP |
CAUSE: |
CORRECTION: |
Knife bevel too sharp and deflects easily. |
Increase bevel
angle by 2°, i.e., 22° to 24°. |
Knife burned in grinding causing soft spots that dull
quickly. |
Regrind knife
correctly taking off at least 1/16" width to remove damaged steel. |
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OVERCUT: Overcut is when the lower sheets in the lift are longer than the
upper sheets after trimming. TOP |
CAUSE: |
CORRECTION: |
Dull knife. |
Change
knife. |
Wrong bevel. |
For soft paper,
decrease bevel angle by 2°, i.e., from 22° to 20°. For hard paper,
increase bevel angle by 2°, i.e., from 22° to 24°. |
Too much clamp pressure - as knife gets further into lift of paper,
the density increases causing deflection of knife. |
Reduce clamp
pressure. |
Back gauge not set square to vertical. |
Correct back
gauge setting. |
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UNDERCUT: Undercut is when the lower sheets in the lift are shorter than the
upper sheets after trimming. TOP |
CAUSE: |
CORRECTION: |
Clamp pressure too low causing sheets to pull out at
bottom. |
Increase clamp
pressure. |
Wrong bevel. |
For soft paper,
decrease bevel angle by 2°, i.e., from 22° to 20°. For hard paper,
increase bevel angle by 2°, i.e., from 22° to 24°. |
Rough or uneven material being cut, such as gummed labels or embossed
stock. |
Adjust clamp
pressure. |
Back gauge not set square to vertical. |
Correct back
gauge setting. |
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HOLLOWCUT:
Sheets of paper are longer at ends and shorter in the center
(not cut square). TOP |
CAUSE: |
CORRECTION: |
Lift is clamped only at ends of paper and not in the
middle. |
Check clamp
edge and apply felt or foam pad to distribute clamp pressure. |
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ARC CUT:
Sheets of paper are shorter at ends and longer in the
center. TOP |
CAUSE: |
CORRECTION: |
Lift is clamped only at center of paper and not at ends of
sheets. |
Check clamp
edge and apply felt or foam pad to distribute clamp pressure. |
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KNIFE
RUBBING: Knife face rubs clamp causing scratches on knife
face and clamp. TOP |
CAUSE: |
CORRECTION: |
Knife dull. |
Resharpen knife
more often. |
Knife too thick. |
Decrease knife
thickness. |
Wrong bevel. |
Decrease
bevel. |
Gibs worn on cutter. |
Repair
machine. |
Combinations of above plus lifts too high. |
Reduce size of
lifts being cut and look for improvement. |
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KNIFE NICKS
BADLY: TOP |
CAUSE: |
CORRECTION: |
Knife at wrong bevel. |
Increase bevel
angle by 2°, i.e., 22° to 24°. |
Knife burned in grinding producing small heat cracks which chip
out. |
Regrind knife
correctly taking off at least 1/16" width to remove damaged steel. |
Knife set too deeply into cutting stick or stick groove has trash in
it. |
Rotate to fresh
stick surface and set depth of cut correctly (max. 0.1mm/.004"). |
Poor cutting sticks. |
Choose better
quality stick. Use FASSCO "YELLOW" stick. |
Contaminated chip board. |
Try increasing
bevel, do not use carbide knives. |
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TOP
Most Knives In Stock... Ready For Immediate
Delivery!
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MAKCO Knives for Trimmers
Atlas Challenge Consolidated International Harris
Macey Harris Sheridan (VT, CT, HT) Heidelberg Omni Binder Horauf
(Stahl-VBF) Horizon Kolbus Kugler Lawson Rapid McCain Muller
Martini Perfecta Pivano Rosback Seybold Stahl Vijuk Wohlenberg |
MAKCO Knives for Flat Cutters
Baumfolder-Lawson Brackett Challenge Chandler &
Price Como Imperial Itoh Lawson Martin
Yale Perfecta Pivano Polar Regent Royal Zenith (Original
Perfecta) Schimanek Schneider
Senator Seybold Triumph-Ideal Wohlenberg |
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MID-ATLANTIC KNIFE
COMPANY
10403 South Leadbetter Road, Suite E
Ashland, VA 23005
804-550-3720 Fax 804-550-3216
Email: makco@comcast.net
1-800-524-4511 |
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