I’ve had some requests to do an alternate finish to mirror polishing, so I came up with a new series of knives incorporating an acid stonewashed surface. 

I first etch off about .002 inch from the blades with acid.  This leaves the blade with a matt black finish.  The blades are then subjected to a tumbled abrasive aggregate in a special machine I made to make this process possible.  The tumbling removes some of the matt black and adds an interesting pattern to the blade. 

I have four blades done so far and have chosen different woods for each knife.   Here’s a few photos of the process so far.


Comparing acid etched and stonewashed blades
knife handle slabs and pins cut out
Trial fitup of handle on knife blade
Knife handles with tung oil applied