Skip to main content

Krenov-Style Scraping Plane, Part 1

...the only way to obtain one is to make one.

Bernard S. Mason, Woodcraft, 1973


The flooding in my part of Colorado is over, but the destruction left behind by the flood waters is something that we will have to deal with for years. Colorado State Highway 7, which I drove to get to my job in Longmont, is only sort of there, 50 percent of the road is gone! Fortunately we do have a way to get to Boulder, down Gold Hill Road to Sunshine Canyon, the only problem with that is it is a steep and bumpy dirt road with a 25mph speed limit. It takes me an hour and a half to get to work this way, it triples my commute time!

Aside from all of that, my wife and I are very grateful that we have a house, our hearts go out to those who lost their houses or are unable to reach them. It will take time to recover and to get back to a "normal" way of life.





This scraper plane is something I was working on before all the chaos.

I decided to make a Krenov-style scraping plane to help smooth guitar sides and help with the final dimensioning of said pieces of wood. Using Dave Finck's book on plane making, click here for his website, I started to make one.


I found a nice piece of red oak at the Woodcraft Store in Loveland, Colorado, it's heavy and had a wonderful ring tone when I tapped the blank against the concrete floor in the store. In this photo, all the parts have been cut with a table saw and dimensioned with a hand plane and a sanding board. I've clamped it all together.




I didn't have much success using dowels to hold the parts together before glue up, my drill press has enough quill runout that the bit makes a hole ever so bigger than the dowel. Or is the dowel ever so smaller than the hole? I got out my battery powered drill and screwed the sides to the body blocks. Oh, so much easier!




Making the cross pin with just a sloyd knife is easy, make sure that the piece is square, make center marks on both ends making sure that all lines are parallel to those points, draw a circle of appropriate size on the ends and start carving away the wood that doesn't look round. This piece fit like a dream and was parallel to bed of the plane.




With the cross pin in place it was time for the "glue up".




I discovered that the blade in my bow saw is dull, well, I did make the blade out of a bandsaw blade that I bought at Wal-Mart twenty some years ago. I need to buy another bandsaw blade, it sure is hard sawing this piece of kiln-dried oak!




Here is where I am at, I need to make the wedge to hold the plane iron in place. That is the problem with having a regular day job, it is hard to make time for the projects you really want to do.

Happy first day of Fall!

Comments

Popular posts from this blog

How to Make a Traditional Froe Mallet

What holds the Holy of the Holies, what did Brahma become? Wood. Why will aspen always tremble? For the nails driven into the cross. What makes the color of wood? The soil it tastes. Cradle, fiddle, coffin, bed: wood is a column of earth made ambitious by light, and made of beauty by the rain.

Kim R. Stafford, Having Everything Right, 1986.

Rive, verb, to split
Shake, noun, a split in a piece wood. (Heart shake, ring shake)
Shake, verb, (Middle English), to split.

I know I should have been in the studio working on my back log of guitars, but the day was so nice and warm with a tall blue canopy, I couldn't stay inside. I decided that I needed to make a proper froe mallet. This style of mallet is traditional to northeastern California, primarily Tehama (where I'm from), Butte, Shasta and Plumas counties where making shingles by hand from sugar pines was an industry. I don't know if it was used in any other region along the Pacific Rim, other parts of the United States or even o…

Basic Hand Tool Kit for Making a Classical Guitar, Revised

Ours is really a simple craft.

James Krenov, The Impractical Cabinetmaker, 1979


So, you want to build a guitar.

Since the original post, Basic Hand Tool Kit for Guitar Making, click here to see it, is the most popular post on this blog, I thought I would revisit it and adjust it to what I am using now to make a classical guitar.

The first thing I recommend doing is to buy or borrow copies of the following books:

Guitar Making: Tradition and Technology, by William Cumpiano and Jonathan Natelson
Making Master Guitars, by Roy Courtnall
The Guitar Maker's Workshop, by Rik Middleton

These are required reading before you begin making a guitar.

Also required reading are these books by Roy Underhill:

The Woodwright's Shop
The Woodwright's Companion
The Woodwright's Workbench
The Woodwright's Apprentice


Why these books by Mr. Underhill? You will learn valuable wood working techniques if you make any of his projects. The dovetail joints used to join a drawer together are far mor…

The Guitar's Scale Length, Your Hand Size and a Chart

I will cite the case of a marvelous concert player, a Japanese lady who is barely 5 ft. tall and with hands that are real miniatures. She plays a 664 mm 10 string guitar and demanded that I build this guitar with an action 1 mm higher than normal, which she handles with incredible ease. This is serious study!


Jose Ramirez III, Things About the Guitar, 1990




Here is the hand size and scale length that I found on the forum at delcamp.com.

Thumb tip to pinky tip span of 250+ 664mm scale length
Thumb tip to pinky tip span of 230 to 250 656mm scale length
Thumb tip to pinky tip span of 210 to 230 650mm scale length
Thumb tip to pinky tip span of 190 to 210 640mm scale length
Thumb tip to pinky tip span of 170 to 190 630mm scale length
Thumb tip to pinky tip span of below 170 615mm scale length



Here is my flexible imperial/metric ruler.




Here is my hand properly placed on the flexible imperial/metric ruler.




Today my reach from little finger to thumb is 240mm. I should more or less be playing a…