| Pilot
Bit |
 |
- Before beginning the cut, place a piece of duct tape or
masking tape
- over the area to be cut. This will keep the pilot bit from
dancing across the porcelain.
- Be sure the size of the tape is smaller than the inside
diameter of the finish saw
- being used.
|
| Porcelain Saw |
 |
- For best results with the spring-loaded saw, use a slow RPM
when
- scoring the porcelain. Typically a good range would be 300
RPM for
- the 7/8" diameter and 100 RPM for the 1-3/4" diameter.
- Be sure that all of the cutters are in contact with the
porcelain. This will help
- eliminate chatter and help avoid chipping of the porcelain.
- For longer life, score the porcelain only deep enough to see
a ring of gray in the kerf.
- Be sure the ring goes all the way around in the cut.
Otherwise chipping may occur.
|
| Finish
Saw |
 |
- Never use water or oil when cutting through cast iron.
- The mud that develops will wear out the carbide inserts
prematurely.
- Use fast speeds and light pressure when drilling through the
cast iron.
- This will allow for longer life and faster cutting. 1000 RPM
is good for the 7/8" diameter
- and 500 RPM for the 1-3/4" diameter. If vibration is a
problem, try a slower speed.
|
