Roto-Sander

No more squeezing your forearm through the soundhole or fumbling around with strange sanding blocks.

Stick your favourite sandpaper to the sanding puck, place it inside the instrument and mate it with the outside driver.

Glide the driver over the outside of the instrument while turning the shaft with a hand drill (no need for crazy speeds) and the puck will neatly sand on the opposite side of the board.

The Roto-Sander is also an invaluable help to fine-tune your guitar after closing the box, allowing you to chase the right frequency responses in conjunction with brace shaving!

Now available also in the Max and Mini variants:

The Max comes with extra strong magnets to allow sanding even thicker plates. Imagine sanding the bridge plate driving the RotoSander from OVER the bridge!!!

The Mini was designed at the request of classical guitar builders, to be able to fit between fan braces. The inner sanding puck is only 26mm in diameter.

WARNING: the Max version might be too powerful to use for sanding just the top, as it will exert a very strong pull on thinner materials and result in very aggressive sanding.

IMPORTANT WARNING (AGAIN): these tools have pretty powerful magnets, so be extremely careful around electronics, cards, medical devices that could be affected by magnetism. Also, do not pinch your fingers!

Testimonials

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The Roto-sander was an invaluable tool on a recent task of removing massively oversized cleats deep in the lower bout of a 40s Martin OM. After prying them loose, I needed to sand out old glue and small wood fibers. The Roto-sander allowed me to do this quickly and with full control!

Spencer Deaton

GuitarLab

A very handy internal sanding tool from Max. Originally made by Frank Ford years ago, nobody made one to buy, until Max (“the merciful”) came up with a new design ❤️.

Beau Hannam

Beau Hannam Guitars

“For years I had admired Frank Fords original design of something similar to this tool but never got around to making one. Max managed to make this accessible to everyone and upgraded the design. My forearm greatly appreciates the reduced amount of time spent inside a guitar!”

Danny West

West Guitar Works

Sometimes it’s all about the right tool for the job. Many of us fondly remember Frank Ford’s original idea of a reverse-polarized magnetic sander – I tried making one years ago that didn’t work very well. Max not only revived the idea and made it work – but made it better! The first time he showed it to me, I immediately bought four of them because I wanted one at every bench in the shop! The Roto-Sander is definitely the right tool for the job and there’s nothing like it!

Doug Proper

The Guitar Specialist