R. Sleigh Draw Scraper
The draw scraper is made of heat treated high carbon steel that is cut and precision ground and then hand sharpened to a razor sharp edge. The super sharp edge peels off a thin brass ribbon easily. It is mounted in a 3/8" wooden handle that you hold like a pencil.
I made the original draw scraper 1/16" wide and sold that version for years and used it myself to tune thousands of harmonicas. I made this version for someone who wanted tools to tune a shruti box with. A shruti box is a bellows instrument from India that has brass accordion reeds that look like giant harmonica reeds.
This version of the scraper is 1/8” wide and is a lot easier to sharpen because the extra width makes it easier to maintain the angle as you draw the edge over the stone.
I tried using this large scraper for tuning harmonicas and it immediately became my go - to scraper. It is still small enough to reach inside a standard diatonic harmonica to drop the pitch of blow reeds without removing the reed plate from the comb. It is also easier in general to use and to sharpen. This is a major upgrade in one of my favorite tools for harmonica work.
You can maintain the edge on your scraper with a hard arkansas stone - a small one will do fine. If you ever have to restore the edge more extensively, I recommend the EZ-LAP Diamond hone & stone in super fine grade & then finish with the hard arkansas stone.
You have to guess at the angle, then test on a scrap reed plate. You want to get a clean shiny mark while you peel off a ribbon of brass...
You can maintain the edge on this tool with a hard arkansas stone (not included) - a small one will do fine. If you ever have to restore the edge more extensively, I recommend the EZ-LAP Diamond hone & stone in super fine grade.
Please don't use this tool on stainless steel reeds - the extra hardness of stainless steel causes the edge of the scraper to break down.