Set Up

• 1). Unscrew the plastic nut from a rotary tool's end.
  
  
• 2). Mount a ceramic grinding stone on the rotary tool using a 1/8" collet.
  
  
• 3). Turn on the tool. Hold a dressing stone to the grinding stone to sharpen it.
  
  
• 4). Screw the guide bracket for approximately two turns.
  
  
• 5). Place the tool on its side edge and compress the springs.
  
  
• 6). Adjust the mechanism slightly, so that the ceramic stone makes slight contact with the edge square.
  
  
• 7). Tighten the rear adjustment a half turn, then loosen the front adjustment slightly for precision.
  
  

Grind

• 1). Place your board on the table. Position small rags 1/3 and 2/3 of the way along the board. Position two C-clamps on top of the rags and screw them in to clamp your board tightly to the table. It is important to keep your board secure because even the slightest movement can cause an uneven edge.
  
  
• 2). Set your rotary tool to 30,000 to 35,000 RPM.
  
  
• 3). Secure the bracket against the board's base, applying slight downward pressure to engage the ceramic stone lightly against the side edge. Adjust the height of the front screw to more accurately align the stone to the edge.
  
  
• 4). Guide the tool down the board's length slowly and in the same direction as the bracket's label arrow. Keep the tool positioned vertically. Using a steady hand, let the tool do the work -- do not force it. One or two passes is usually enough to obtain a sharp edge, one that is sharp to the touch but not sharp enough to cut through your skin if you run your finger along it.
  
  
• 5). Hold a gummi stone flat to the base edge and rub from end to end. This will polish and de-burr the edges.