Attributes

Brand	-
Category	Specialty Tools / Unique Tools / Toys, Strollers, Educational Toys, Building Blocks & Models
Origin	-
Brand	Cretacolor
Model Name	Carbo Jumbo
Material	High-Impact Plastic and Steel Blade
Color	Black and Silver
Compatible Pencil Sizes	Standard (7-8mm) and Jumbo (10-12mm)
Operation Type	Manual Rotary Crank
Mounting Option	Desktop or Wall-Mountable
Shavings Container	Transparent Removable Tray
Country of Origin	Austria
Recommended Age	6 Years and Up

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Professional quality for home use

I bought this for my architecture sketching kit. It handles my large charcoal pencils and regular graphite pencils with equal precision. The shavings container is easy to empty.

Anonymous

Mar 23, 2026

Rating: 5/5

Worth every penny

Expensive compared to basic sharpeners, but the durability and consistency make it worth it. It has been in daily use in our classroom for three months with no issues.

Anonymous

Mar 19, 2026

Rating: 4/5

Great sharpener, slightly bulky

It works exactly as advertised. The dual-hole system is convenient so you don't have to swap inserts. It is a bit larger than expected, but that adds to its stability on the desk.

Anonymous

Mar 16, 2026

Rating: 3/5

Good but requires firm mounting

The sharpening action is smooth, but if you don't hold it down firmly or mount it to the wall, it tends to slide around on the table when cranking thick jumbo pencils.

Anonymous

Mar 12, 2026

Rating: 5/5

Perfect for our homeschool art station

This sharpener is a game changer. We use both standard and jumbo pencils for drawing, and this handles both effortlessly. The build quality feels very sturdy, typical of Austrian engineering.

Anonymous

Mar 10, 2026

Rating: 5/5

No more broken tips!

My kids used to break pencil tips constantly with our old wedge sharpener. This rotary mechanism creates a perfect point every time without breaking the lead. Highly recommend for young artists.

5 FAQ

Q: Can left-handed people use this easily?

A: Absolutely. The crank handle can be positioned on either the left or right side of the unit, making it fully ambidextrous.

Q: Does it come with screws for wall mounting?

A: Yes, the package includes two screws and anchors suitable for mounting the unit securely to a wall or vertical surface.

Q: What is the maximum diameter for the jumbo hole?

A: The jumbo hole accommodates pencils with a diameter of up to 12mm, which covers most oversized drawing and coloring pencils.

Q: Can this sharpener handle colored pencils as well as graphite?

A: Yes, the Carbo Jumbo is designed to sharpen both graphite and colored pencils, provided they fit within the standard or jumbo diameter ranges.

Q: Is the blade replaceable if it gets dull?

A: The blade is made of high-quality hardened steel and is designed for long-term use. While technically replaceable by a professional, Cretacolor recommends contacting support for blade services rather than attempting self-replacement.

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