StewMac Ultimate Scraper

  • 57 Reviews
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It's the best scraper we've ever used!
Revolutionary tools, unsurpassed for smoothing wood surfaces, arched instrument tops, bindings and more.

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StewMac Ultimate Scraper Original


Item # 0631
Due 1+ month
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StewMac Ultimate Scraper Mini


Item # 0632
In stock, ready to ship!


StewMac Ultimate Scraper Rectangle/Concave


Item # 0623
In stock, ready to ship!


Total: $0.00
Quantity: 20


StewMac Ultimate Scraper

Al Carruth shows how to use and sharpen the Ultimate Scraper.

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It's the best scraper we've ever used!
Revolutionary tools, unsurpassed for smoothing wood surfaces, arched instrument tops, bindings and more.

For an ultra-smooth wood surface, nothing beats a good sharp scraper. Veteran luthier Al Carruth has given the simple scraper a revolutionary makeover, with practical improvements for stringed instrument work: the original Ultimate Scraper. We added a second mini version that's popular for working in tighter areas.

Go for the rectangle/concave scraper when you need to keep a good, tight, square corner in binding channels and neck pockets. Also great for smoothing bindings and many steps of making a new neck. Thanks to renowned bass luthier Michael Tobias for suggesting this new shape!

  • Refined shapes are superior for arched tops and flat or curved surfaces.
  • 1/8" thickness adds stiffness and greatly reduces chatter.
  • Two working edges for scraping with both pull and push strokes.
  • Durable tempered steel edges, for smoothing harder woods.

At 1/8" thick, Ultimate scrapers are much beefier than standard scraper blades. Two cutting edges let the tool work in both directions, without flexing and with less chattering. That saves a lot of time and effort! The tempered tool steel holds a more durable edge, too. The shapes are specially refined for hand-contouring and graduating arched instrument tops and backs, as well as smoothing bindings and flat surfaces.

#0631 Original: 3-3/4" x 1-11/16" (95.25mm x 42.86mm)
#0632 Mini: 2-1/2" x 1-1/2" (63mm x 38mm)
#0623 Rectangle/Concave: 3-7/16" x 1-13/16" (87.31mm x 46.04mm); three straight edges plus 20"-radius concave edge

From luthier Al Carruth:
"In Il Segreti di Stradivari, violin maker Simone Sacconi wrote 'scrapers were made from blades of sabers. Since they were of very hard steel one could not turn the edge and therefore they were used like a knife.' When I began working with violin maker Carleen Hutchins she used such a scraper. This is, in my estimation, the best possible scraper for builders of arched instruments.

"It works on the same principle as scraping with a broken piece of glass; a common technique among carpenters. A very hard material can take an exceedingly keen edge and when it is perpendicular, as it is in broken glass, it can last for a long time even if the material is brittle. This tool has the advantage over glass of having a shape that is well defined and re-sharpenable."

How Al sharpens his scraper:
Sharpen the Carruth Ultimate Scraper on a grinding wheel"I find it easiest to hollow grind the edge perpendicular to the centerline of the scraper. Simply set the tool rest on your grinder perpendicular to the wheel and grind all around. Use as fine a wheel as possible and don't apply too much pressure. If desired, the edge can be further dressed on a fine stone with or without a guide block.

"In use, this scraper will give an extremely smooth cut even on soft or highly figured wood. It has little tendency to chatter due to its weight and does not heat up. It is much easier on the thumbs than a "normal" scraper as it is not "sprung" in use. To re-sharpen simply lap the surface on a fine stone and re-grind the edge."

Watch the video! Al Carruth shows how to use and sharpen the Ultimate Scraper. Watching Al, you'll see how easy this is.

Product Instructions

StewMac Ultimate Scraper Instructions

Scraping and sharpening instructions.

Ratings & Reviews

StewMac Ultimate Scraper

  • Based on 57 Reviews
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They are not lying!!!

By guitarnoob from Seattle, WA
(Customer's Reviews) Monday, September 29, 2014

these scrapers are the best. a bit smaller than i expected but they will last for a very long time.

aptly named

By Bob Laughlin from Vancouver BC
(Customer's Reviews) Friday, July 11, 2014

its pretty much replaced all my scrapers - easy on the hands - perfect for hollowing out a fiddle or scraping guitar binding flush


Thursday, June 19, 2014

I own two StewMac Ultimate scrapers. I have the original and the concave.
I have used these scrapers on a large number of projects and could not be more satisfied. They out perform any other scraper I have ever used. I highly recommend these excellent tools to any woodworker, hobbyist or professional

Scrapers - Love em

By Steve Schuh from Cincinnati, OH
(Customer's Reviews) Wednesday, May 28, 2014

Scrapers are essential tools for any work shop. These are a different concept as they are thick and non flexible. However they work great. Not good, great. I haven't had it long enough to dull it but if it keeps and edge it will see a lot of use.


By Leonhard Augenstein from Germany
(Customer's Reviews) Wednesday, April 23, 2014

Amazing good stuff. Much better than conventional ones.

Add Rectangular

By J. E. Mike Tobey from Davenport, Iowa
(Customer's Reviews) Thursday, April 17, 2014

I snagged the first two immediately on offer and recommended to very experienced luthiers- scored points there. New one is just as superior. Next we need a triangle with one sharp point and 2 radii on the others.

Seriously impressed - thanks Al

By Nate Scott from Portland
(Customer's Reviews) Friday, January 24, 2014

This scraper has become an indispensable tool and easily outperforms and outlasts the edge of a traditional card scraper. I really never use the card scrapers anymore unless I'm doing something rough like a hardened glue - not because they work better, but just to baby my Carruth scraper a bit. That said, I still haven't needed to sharpen it.

New scraper

By Wilkes guitars from Keele,england
(Customer's Reviews) Sunday, January 12, 2014

I was very impressed with this scraper having used conventional scrapers for a number of years. Since receiving it, it's been in constant use on a number of various instruments in the workshop. very jolly good. doug wilkes

As good as it gets

By Marcio Costa from Brasil
(Customer's Reviews) Sunday, December 29, 2013

The scraper is, as advertised, solid. It looks small, but when you take it to the wood, you confirm that the scraped area is much bigger, in each pass, than regular flexible scrapers'. The curves are also convenient, from 3/4 violins to big archtops. I did not have to sharpen it yet, but there are clear instruction steps for that. Thanks.

Just buy it

By Matt @ Texas Toast Guitars from Arvada, CO
(Customer's Reviews) Tuesday, November 05, 2013

If you are making anything with a carved top, do yourself a favor and just buy this thing. I was having some problems with a slight bump in the recurve and this little honey sorted them all out. I still use the old school scrapers but this little guy is always on my go-to tool magnet. Oh yeah, you can use it one handed too.

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