1. Below the spindle, you will see the micrometer in increments of 5, starting with “0” (example 1a). Set the micrometer to zero. This provides a starting point and reference for setting the depth accurately. It is important that the micrometer is threaded onto the spindle housing sufficiently to prevent excessive play in the micrometer nose cone
2. With the appropriate cutter installed in the spindle, loosen the setscrew in the brass cutter knob with a spline wrench (example 1c).
CAUTION: When you loosen the setscrew in this step, the cutter may easily fall out of the spindle and can cause cutter tip damage. Use one hand to hold the cutter from the top before loosening.
3. Gently place a piece of metal (brass preferred) against the nose cone so as to push the cutter even with the bottom of the nose cone (example 1d). Slowly lower the cutter down to the brass material. Now the cutter should be flush with the nose cone. Retighten the cutter knob setscrew.
4. Your cutter is now zeroed. Rotating the micrometer to the right will adjust the depth of the cut. Each click of the micrometer = .001″. A full revolu¬tion is .025″.Social tagging: CNC router > computerized engraving machines > Engraver Machine > engraving tools > spindles > top load spindle > zeroing cutter