SharkFin is coming...

Why should fret crowning feel like punishment?

All other fret crowning files force you to death-grip. SharkFin changes that.

If you’ve done enough fretwork, you already know the moment – forearm tight, wrist getting cranky, dented fingertips, grip turning into a death-claw… and you’re only halfway through the fret job.

I know it because I’ve lived it.

Repetitive stress took my filing hand out of the game for quite a while. I was able to avoid surgery, but it took rehab, cortisone shots, and a whole lot of patience to earn the use of my hand back. I promised myself two things: never again for me – and if I could help it, never – at all – for you.

That’s why SharkFin exists.

Here’s the counterintuitive truth: a typical file handle doesn’t give you leverage over the work – it gives the file leverage over your hand and wrist. The longer the handle, the less direct downforce and control you actually get at the teeth.

Here’s a thought experiment: If you were to double the file’s handle length, you’d also cut your effective downforce (and control) by 1/2. That’s why crowning often feels like you’re fighting the tool, not shaping the fret.

So we flipped the entire perception of what a fret crowning file is… on its head. And then set out to create what a it can be.

SharkFin eliminates the grip strength and effort normally required to crown frets.

You can literally un-grip during the cutting stroke – and be relaxed on the back stroke. Instead of hanging a file out in front of your hand, SharkFin puts you directly on top of the action with a soft, molded handle that conforms to your hand like it was custom-molded for you – instant control, less strain, and a lot less “why does this have to suck?”

SharkFin’s cutting behavior is virtually identical to the already game changing and much-loved FretGuru Dagger (same D.I.A. cutting geometry) – tuned for speed, precision, safety for your frets, fingerboard, and guitar, and repeatability across nickel-silver and stainless steel frets.

What you’ll notice immediately:

• You stop death-gripping the tool – relax your hand during the cutting stroke (and the entire process)

• Direct, confident control, instant 1:1 feedback – you’re on top of the cut, not steering from behind

• Cleaner, tighter fret crowns with fewer passes – less fatigue, less frustration

• Built for professional fretwork – level, crown, polish, repeat

• Crafted in the heart of Europe – fine European steel, made for serious bench time

If fret leveling and crowning is part of your life, SharkFin is about to make it feel like a craft you can love again

(Choose your size on the next page)