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Is the AFMAT Electric Pencil Sharpener Worth It?

Worth it, with one size limit to know about

By Daniel Kruger, tech & home gear · updated 2026-07-21

Worth it if pencils keep dying in your house before their time

AFMAT Electric Pencil Sharpener, Fully Automatic Pencil Sharpener for Classroom, 7-11.5mm Colored/Jumbo Pencils, Robot Pencil Sharpeners for Teacher Artitist Office Home, Rechargeable & Cordless, PSX5
around $35 4 stars · 4,152 Amazon ratings

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You know the sound: that grinding whine from a manual sharpener that just won't stop, right up until the lead snaps off inside the wood and you're left twisting a stub that's now shorter than your thumb. Or worse, a kid presses too hard, the point shears, and you're doing it all again. An electric pencil sharpener is supposed to fix that. The question is whether it actually knows when to quit.

Here's the trick: this one doesn't run until you tell it to stop, it runs until the pencil tells it to stop. Drop a pencil into the hole and the motor auto-feeds it against the blade. As the tip gets pointier, resistance and shape change, and the mechanism reads that and auto-ejects the pencil the moment it's sharp, before the motor keeps grinding away wood and lead you didn't need to lose. That's the whole flaw in old sharpeners solved in one move: no over-sharpening, no exposed blade for little fingers to find. You get three sharpness settings, so an artist can dial in a fine point for shading while a kid gets a blunter, sturdier tip that survives being pressed too hard. The barrel takes a wide range, 7 to 11.5mm, so it handles fat jumbo pencils and skinny colored ones like Prismacolor or Crayola without swapping tools. It's cordless too, charging in about two hours for roughly 600 sharpens, so it lives on a desk or goes in a backpack without hunting for an outlet.

You're not really buying a sharpener, you're buying a machine that decides for you when a pencil is done, which is the one job manual sharpeners always got wrong. Once it stops guessing, you stop wasting pencils and fingers along with them.

Check today's price on Amazon4 stars · 4,152 Amazon ratings

Worth it if

  • You want kids sharpening pencils without touching a blade
  • You use a mix of graphite and colored pencils in different sizes
  • You want it to stop itself instead of babysitting it

Skip it if

  • Your pencils are already shorter than about three inches
  • You need a sharpener built for continuous, heavy classroom-wide use
  • You mainly use soft-core pencils and don't want to adjust the tip setting

If you've got kids, students, or colored pencils that keep snapping under a hand crank, this is a quiet yes. Skip it if you're working with pencils shorter than about three inches or need something built for constant industrial-volume sharpening, because that's the one spot this design draws a line.

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Before you go

Are electric pencil sharpeners worth it?

For anyone sharpening pencils daily, especially kids or artists, yes, because they stop wear and breakage that manual sharpeners cause when you oversharpen or apply uneven pressure.

How long does an AFMAT pencil sharpener take to charge?

About two hours for a full charge, which is rated for up to 600 uses before you need to plug it in again.

Why won't my AFMAT pencil sharpener work?

Usually it's a pencil shorter than 2.9 inches jamming the feed, or a battery that needs charging, since it won't run properly mid-charge without the recommended 5V 2A adapter.

Full spec sheet
BrandAFMAT
Power sourceRechargeable battery, cordless
Pencil diameter range7-11.5mm
Sharpness settingsSharp, medium, blunt
Charge timeAbout 2 hours
Uses per chargeUp to 600
Dimensions3.6 x 3.6 x 7.3 inches
MaterialABS housing, stainless steel blade

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Daniel Kruger covers tech & home gear for Is It Worth It Reviews. We research products and explain them honestly; we do not test them and we never pretend to.