Today, I put my new Copy Carver into operation. The Copy Carver is the invention of Ed Walicki, a wood carver from Michigan, who developed it to easily duplicate three dimensional wood carvings and other sculptures. I made mine from his plans so that I can duplicate banjo necks, hollow out autoharp bodies, and custom manufacture large quantities of fine sawdust. To me, the Copy Carver represents an affordable, analog alternative to the CNC routers that are so popular nowadays. CNC, or Computer Numerical Controlled routers cost thousands of dollars and are just not right for a small shop such as mine. I like to think of my Copy Carver not as a CNC router but rather a P (pencil)NC router.
The Copy Carver has a work table upon which are clamped a model of the item to be duplicated and a rough blank to be carved. A rolling “swing box” holds a powered trim router and a stylus in precise alignment. The carriage rolling on the tracks guides one axis while the swing box can be guided up and down and back and forth on the other two axes. Carving involves guiding the stylus over the model while the router precisely cuts the blank.
I have been making very stable autoharp bodies by hollowing out 1-1/2″ laminated maple such that the pinblocks, sides, and back are of one unit with no joints to fail. It’s a bit wasteful but I think much less so than a finished instrument that could fold, warp, or crack requiring future repair. To rout the bodies in the past I tried to control a router by hand and the process was positively frightening. Now, the Copy Carver allows me to safely complete the task with less effort.
My initial (r)outing with this machine is a left-handed, or reverse, autoharp made to play on the lap without having to cross hands. I’m routing out the inside of 1-1/2″ laminated maple to a final depth of 1-1/4″. That will leave 1/4″ (or two plys) for the back. The model is just some scrapwood framed into the exact inside shape that I will cut into the autoharp body. Later, I can turn this same frame/model over to rout an autoharp body in the conventional, right-handed configuration. The work is as slow as the old way but at least I’m confident that I will finish the task with all or most of my fingers and eyes.
The Copy Carver’s swing box is counter balanced with 15 pounds of barbell plates and fine tuned with a few handy spring clamps so that guiding the stylus and router is almost effortless. A screen door handle grasped with the left hand makes it easier to roll the carriage on the tracks.