Knew Concepts 3" Mk.III Fret Saw – Screw Tension

Enjoy lightweight handling and precise manual blade adjustment with the Knew Concepts 3" Mk.III Fret Saw with Screw Tension. The original design in the Knew Concepts fret saw line, this compact saw provides a straightforward, economical option for jewelers, metalsmiths, model makers, and precision craftspeople who want the control of a Knew Concepts frame without the lever-tension system found on higher-level models.

Blade tension is adjusted using the knurled tension nut at the top of the frame, allowing you to fine-tune tension manually for precise sawing. With its compact 3-inch throat and exceptionally low 115-gram weight with blade, the Mk.III Screw Tension Saw is an excellent choice for detailed jewelry fabrication, piercing, model making, and other precision cutting applications.

Features & Benefits

• 3" throat depth is ideal for jewelry and small precision work
• Original screw-tension design from the Knew Concepts fret saw line
• Knurled tension nut provides precise manual blade adjustment
• Simple screw-tension mechanism with no lever system to operate
• Lightweight design helps reduce unnecessary tool weight at the bench
• Weighs only 115 grams with blade
• Compact frame provides excellent maneuverability around small workpieces
• Excellent for jewelry fabrication, piercing, metalsmithing, and model making
• Economical entry into the Knew Concepts fret saw family
• Made in the USA

Specifications

Precise Screw-Tension Adjustment

The defining feature of the 125.003 is its straightforward screw-tension system.

Instead of using the cam lever found on other Knew Concepts saws, blade tension is adjusted by turning the knurled tension nut located at the top of the frame.

This gives you direct manual control over the amount of tension applied to the blade.

For users who prefer a simple, traditional adjustment system—or don't require the rapid blade changes offered by a lever-tension saw—the screw-tension Mk.III is an appealing alternative.

Exceptionally Lightweight

One of the biggest advantages of the Mk.III design is its low weight.

The 3" 125.003 weighs just 115 grams with a blade installed.

That's considerably lighter than the 3" Mk.IV models we just worked through:

At only 115 grams, the 125.003 provides a very light tool in the hand—an attractive characteristic for detailed bench work.

Compact 3" Throat

The 3-inch throat depth makes this saw particularly appropriate for jewelry and other small precision projects.

A compact frame can be easier to maneuver around small components than a deeper saw, especially when you don't need the additional reach of a 5" or 8" frame.

It's well suited to:

• Pendants
• Earrings
• Rings and jewelry components
• Small sheet-metal projects
• Pierced designs
• Decorative metalwork
• Model-making components
• Precision craft projects

Excellent for Jewelry Fabrication

The combination of a compact frame, low weight, and precise blade tensioning makes the 125.003 a natural fit for jewelry fabrication.

It can be used for the fine sawing operations commonly encountered when cutting and shaping metal components, including:

• Straight cuts
• Curved profiles
• Decorative shapes
• Small components
• Pierced designs
• Detailed sheet-metal work

Its lightweight construction is especially appealing for jewelers who spend extended periods at the bench.

A Straightforward Knew Concepts Saw

Not every customer needs the additional mechanisms of the Mk.IV or swivel-clamp models.

The 125.003 keeps the design intentionally straightforward: a compact Knew Concepts frame with manual screw tensioning.

That makes it particularly attractive to:

• Beginning jewelers
• Students
• Hobbyists
• Model makers
• Experienced users who prefer screw tension
• Customers looking for a lighter Knew Concepts saw
• Anyone who doesn't need rapid lever-operated blade changes

Screw Tension vs. Lever Tension

With 125.003, tension is manually adjusted using the knurled nut.

With 125.003C, Knew Concepts moves to a lever-tension system.

The lever version becomes particularly attractive for piercing work involving frequent blade release and reinstallation, while the 125.003 keeps things simpler and less expensive.

Customers who don't routinely make numerous interior cuts may find the screw-tension system perfectly suited to their needs.

A Great Entry Point into Knew Concepts

The screw-tension saw is both the original Knew Concepts fret saw design and the economy model.

Made in the USA

The Knew Concepts 125.003 is made in the United States.

Ideal For

The Knew Concepts 3" Mk.III Screw Tension Fret Saw is an excellent choice for:

• Jewelry making
• Jewelry fabrication
• Piercing
• Metalsmithing
• Silversmithing
• Model making
• Small sheet-metal projects
• Precision craft work
• Jewelry students
• Hobbyists
• Professional bench work
• Users who prefer manual screw tensioning

Frequently Asked Questions

What is the Knew Concepts 125.003?
It is the 3" Mk.III Fret Saw with Screw Tension, the original and economy-style configuration in the Knew Concepts fret saw line.

How is the blade tension adjusted?
Blade tension is adjusted by turning the knurled tension nut at the top of the frame.

Does this model have lever tension?
No. The 125.003 uses screw tension. Knew Concepts identifies the 125.003C as the corresponding 3" Mk.III model with lever tension.

Does this model have swivel blade clamps?
No. 125.003CS is the 3" Mk.III model with both lever tension and swivel blade clamps.

How much does the 125.003 weigh?
115 grams with the blade installed.

Is this lighter than the 3" Mk.IV?
Yes. The 125.003 weighs 115 g, compared with 179.1 g for the 124.003C Mk.IV with lever tension.

Is this a good saw for jewelry making?
Yes. Its compact 3" frame, light weight, and precise manual tension adjustment make it well suited to small-scale jewelry fabrication and precision sawing.

Why choose screw tension instead of lever tension?
Screw tension provides a simple and precise manual adjustment system. Lever tension becomes more advantageous when you frequently release and reinstall the blade, such as during extensive piercing work.

What is the UPC?
The UPC is 196943890072.

Where is the saw made?
It is made in the USA.

Micro-Tools makes every attempt to provide accurate information for each item. Actual packaging and/or specifications may be slightly different from the information and picture provided.