A Coin/Key Cup , Lathe or Rotary Axis CNC Project

Key Cup  

When I taught furniture design we would have our first year students each make a coin/key cup on the lathe to learn the tools and procedures needed.  A simple project.  a 3" diameter 1" deep bowl on the face.  A 1/2" outside curve on the top, and a 1/4 x 1/4 bevel on the bottom edge were required.  The edge profile between was up to the student to design.  

Profile done on the Rotary Axis

This red oak version I cut using my CNC.  The top bowl I cut with the block standing up using a moulding toolpath. The bottom bevel, top round over, and the profile between the two were all done on my rotary axis.  This project is intended to be set on your dresser or any shelf near your entrance to throw your keys or pocket change or jewelry into.

A cherry stain was added to warm up the cup.  

Cherry stain applied

To avoid screw holes in the bottom we glued the starting block to a plywood scrap with notebook paper in between.  After the project was done on the lathe the faceplate was unscrewed and removed, and then the plywood was relatively easy to split off the bottom with a broad chisel and a few taps of a mallet. The bevel cut on the bottom made it easy to place the chisel on the paper seam. 

Plywood back split off.

 Once split what was left of the paper and glue was easy to sand off the bottom.  

Bottom sanded clean and smooth.. 

The bottom was then stained and finished. A felt self-adhesive 3.25" diameter disk was stuck to the bottom. A bit of cushion and a shadow line for effect. As pocket change isn't as common as it used to be this cup can still be useful. I park my car keys in mine. An official spot where they can rest in style between car trips when not needed. 

Questions and comments are appreciated.  Please no ad or self serving links otherwise they will be deleted.

4D