Cut String and Twine Without Exposing a Blade

Job: Sever suitable string or twine with the 42020’s built-in notch while its utility blade remains fully retracted, without letting cord tension, a shifting bundle, a rebounding end, or a hidden sharp element injure the operator or damage the load

Time: One to five minutes for a familiar controlled tie; longer for load assessment, unloading, containment, or unfamiliar cord

Difficulty: Moderate — the edge is captured, but the restraint can store energy and the item it holds can move when released

Everything else: Cord/load identification; suitable support or load restraint; secondary tie or clamp when needed; compatible gripper or pliers for loose ends; cut-resistant hand protection selected for the complete task; eye protection where recoil/debris is credible; covered waste container; alternate approved cutter for cord the notch does not accept; local material/equipment procedure

Understand what the notch changes

The 42020 is a retractable trapezoid-blade utility knife, but this job does not use the exposed trapezoid edge.

The accepted feature is a built-in notch that cuts string without exposing the blade.

That changes one important hazard: the operator does not need to extend an open cutting edge beside the hand that is controlling the cord.

It does not eliminate:

a shifting or opening load;

lashing under mechanical load;

sharp wire hidden inside a cord;

contaminated or chemically affected material;

a snapping cut end;

a hand being pinched against the load;

a cord too large/hard for the notch;

injury from other sharp bundle contents.

Treat the feature as captured-edge control, not permission to cut any restraint.

Read the exact 42020 facts

model key 42020;

Front-Loading Utility Knife identity;

three blade positions with top-slide control;

push-button tool-free blade change;

blade storage in the handle;

three heavy-duty blades included;

built-in string notch;

the notch cuts string without exposing the blade.

It does not establish:

notch opening or edge geometry;

cord diameter/material/capacity;

whether the notch edge is separately replaceable/serviceable;

inspection or sharpening method;

chemical/temperature/environmental compatibility;

suitability for rope, webbing, cable, wire, strapping, or life-safety line.

Keep all of those as physical or application-level decisions.

Identify what the cord is doing

Before cutting, determine whether the line is:

tag/string attachment;

machine/process line;

safety, climbing, rescue, fall-protection, rigging, or animal restraint;

electrical pull string or identification line;

part of an unknown assembly.

Only the first few may be ordinary notch work.

Do not cut a line involved in lifting, rigging, fall protection, pressure, machinery, structural restraint, utilities, or life safety from this guide. Transfer it to the responsible authorized procedure.

If cutting the tie changes the load state, the load—not the knife—is the principal hazard.

Identify the cord construction

Look closely without sliding bare fingers along it.

Record, as far as known:

natural or synthetic fiber;

monofilament, twisted, braided, or laid construction;

dry, wet, icy, oily, painted, resinous, or contaminated state;

visible wire, abrasive grit, hard core, or embedded debris;

whether one or both ends can be held.

String and twine are within the feature language. Rope, plastic banding, metal strap, electrical conductor, wire rope, hose, tubing, and cable are not silently included.

When the material cannot enter the notch freely, choose another approved cutter. Do not widen the notch, hammer the cord into it, or extend the main blade as a workaround.

Predict what will move

Trace both sides of the intended cut.

What does each end connect to?

Which end is loaded?

What will the package or bundle do?

Can the contents expand, roll, spring, fall, or separate?

Is a sharp object being restrained?

Could a cut end strike an eye or face?

Is a hand currently supplying the tension?

Does a second tie conceal the real load?

Support or restrain the load independently before severing the string.

For a compressed bundle, use an authorized unpacking/release sequence. Do not place your body over the tie or stand in the expansion path.

Inspect the 42020

With the tool pointed away from people:

inspect the body and nose;

verify the top slide moves deliberately;

retract the main blade completely;

visually confirm no trapezoid edge projects;

inspect the notch for packed fibers, chips, damage, or contamination;

verify the handle/body is secure;

confirm the tool is clean enough for the material/environment.

Do not assume the last slide click means retracted; look.

If the main blade will not remain fully housed, remove the knife from service. The notch claim depends on no exposed blade.

The record supplies no notch-sharpening or notch-edge replacement route. Do not probe it with a finger or run an abrasive through it.

Prove the notch on an unloaded sample

For unfamiliar cord, obtain a short unloaded sample from the same material and condition.

Hold it through a fixture or pliers so hands remain away from the notch. Feed the sample into the notch and make a controlled pull.

it enters without crushing;

the tool captures rather than ejects it;

reasonable hand force severs it;

it does not reveal wire or hard reinforcement;

the cut does not require sawing or twisting;

fibers do not pack the notch;

the main blade remains retracted.

If the sample stretches, jams, flattens, or demands excessive force, stop. Use the correct material-specific cutter.

Set the work zone

Create room for both the cutting pull and the release.

face out of the cord plane;

free hand away from the notch and projected moving end;

bystanders away from the load;

the bundle fully supported;

waste container ready;

other cutting edges guarded.

Use lighting sufficient to see the notch and both cord legs.

Select hand protection for sharp bundle edges, cord burn, splinters, and the actual load while retaining control. OSHA requires hand protection selection according to identified hazards in its hand-protection standard.

Use eye protection where a released end or debris can become airborne under OSHA’s eye and face standard.

Remove tension where possible

The best cut is an unloaded cut.

Set the item down, support the bundle, close a lid, apply a secondary restraint, or otherwise remove the tie’s load through the authorized handling method.

Create only enough slack to present the string to the notch. Do not wrap cord around fingers to gain tension.

If controlled tension is needed to help the notch engage, use a tool/fixture and keep the line’s recoil path clear.

Never pull a tie toward your torso while cutting it.

Present the string to the captured edge

Keep the 42020’s main blade fully retracted.

Hold the knife so the notch opening faces the string and the pull will finish in open space.

Guide the loose/slack section into the notch without placing fingertips beside the opening. When necessary, use pliers or a gripper on the disposable end.

Do not force a knot, doubled section, splice, tag, hard barb, or wire tie into the notch.

Seat one cord section only unless a matching-sample proof and work procedure support more. The record supplies no multilayer capacity.

Make one controlled severing pull

Stabilize the tool wrist and move the cord/tool through the proven direction.

Let the captured edge do the cutting. Do not:

twist the knife;

pry the notch open;

brace the string against the main-blade nose;

extend the utility blade midway through;

put a thumb over the cord to trap it.

As the string parts, keep both cut ends directed away from the face and body.

If it does not sever under the proven controlled effort, stop. Reassess material, notch condition, and load. More force is not a universal solution.

Control the released load

Pause before reaching into the bundle.

both ends have stopped;

contents are stable;

no second restraint is newly loaded;

no sharp product moved into the hand path;

no cord loop remains around a limb or component;

no item is rolling or falling.

For multi-tie packaging, cut in the sequence that keeps the contents controlled. A tie that looks slack may become loaded after another is removed.

Do not use the knife to catch or push shifting contents.

Inspect the cut and the notch

Examine the string end without stroking it by hand.

A clean cut may leave:

short loose fibers;

melted-looking synthetic filament from prior damage;

a sharp monofilament end.

Contain it accordingly.

Inspect the notch for wedged fiber or damage. Remove debris only through a safe tool-maintenance method with the main blade retracted and hands away from the captured edge.

If cut quality changes across repeated ties, stop for tool/material inspection instead of pulling harder.

Dispose and reset

Collect cut string immediately. Loose loops create trip, entanglement, ingestion, and housekeeping problems.

Do not leave short fibers on a food, medical, finishing, electrical, or rotating-equipment surface.

Before carrying or storing the 42020:

visually reconfirm full blade retraction;

clean the notch/body compatibly;

keep the top slide protected from unintended movement;

return the tool to controlled storage.

No cleaner, lubricant, notch service interval, or replacement element is an accepted Hyde fact.

Write a recurring-task standard

For repeat unpacking or bundling work, define:

approved string/twine families;

exact cut sequence;

stance and release zone;

PPE from hazard assessment;

unacceptable notch/tool condition;

Retain a labeled unloaded sample when helpful.

Do not write a diameter or tension limit as a 42020 claim unless verified by Hyde. Use the local qualified material identity.

Know when another system is required

Stop and transfer when the restraint is:

metal or wire-reinforced;

heavy rope/webbing;

under unknown/high load;

connected to lifting/rigging;

restraining a compressed spring-like load;

energized or near energized parts;

contaminated beyond the work plan;

too large to enter freely;

part of machinery or safety equipment.

The notch’s value is precisely defined: suitable string without main-blade exposure. Protect that value by refusing adjacent jobs it does not prove.

Handle ties on equipment as an isolation problem

A string tied near a conveyor, shaft, fan, spool, baler, tensioner, or powered packaging station may be loose while the equipment is stopped yet become an entanglement path when it restarts.

Do not reach into machinery with the 42020 under a routine string-cutting instruction.

Apply the machine’s authorized shutdown and hazardous-energy procedure, including guards and restart control.

Resolve whether the string is:

a jam symptom;

an unauthorized tie;

wrapped around a moving component;

holding a guard/sensor;

evidence that maintenance is incomplete.

Cut only after authorized isolation and inspection. Remove every loose remnant from the equipment and verify the responsible person—not the cutter—controls restart.

Make an incomplete cut a safe stop

When fibers remain connected, do not pull the load apart to finish.

Keep the load supported, withdraw the 42020, inspect the notch and cord, and decide whether:

the cord doubled in the notch;

a knot/splice reached the edge;

hidden reinforcement is present;

contamination packed the edge;

tool damage occurred;

another approved cutter is required.

Do not transfer the half-cut line to an exposed utility blade while maintaining tension.

If a partially cut restraint is now unreliable, add an authorized secondary restraint before repositioning or changing tools. Mark/communicate the condition so no one assumes the tie is intact.

Keep captured-edge performance observable

In repeated work, track changes rather than normalizing force.

material identity/lot;

wet/cold/contaminated condition;

whether the cut completed cleanly;

frayed versus clean end;

tool asset/condition;

A gradual rise in force can indicate edge wear, harder material, doubled cord, or contamination. Stop at the trend; do not let operators compensate with stronger pulls.

What goes wrong (and the fix)

The operator extends the blade “just a little.” Retract and use the notch or select another approved tool.

The cord is wrapped around a finger for tension. Release it; support with a fixture/gripper.

A compressed bundle opens into the operator. Recontain and follow the authorized release sequence.

Wire appears inside the twine. Stop; use the material-specific cutter and contain sharp ends.

The string will not enter the notch. Do not force or modify it; change tools.

The notch is sawn back and forth against a loaded line. Unload, inspect, and prove on a sample.

The main blade projects despite retraction. Quarantine the 42020.

A cut end snaps toward the face. Clear the recoil plane and control both ends before retrying.

Loose string stays on the floor. Collect it immediately.

One successful cord becomes a universal rating. Limit the work instruction to the qualified material/condition.

The history footnote

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