FREE BOOKS

Author's List




PREV.   NEXT  
|<   26   27   28   29   30   31   32   33   34   35   36   37   38   39   40   41   >>  
removed, and then changed to first speed. 2. CALIPERING FOR DIAMETER. The true diameter is then calipered the same as in spindle work. 3. SMOOTHING CUT. A smoothing cut is taken with a skew chisel the same as in spindle work. [Illustration: Fig. 15.] 4. ROUGHING CUT ON THE FACE. (3/4" GOUGE.) FIG. 15. The rest is now placed parallel to the bed of the lathe and slightly above the center of the spindle. Place the gouge on the rest on its edge with the grind toward the stock and parallel to the face to be surfaced. The nose of the gouge is the cutting point. The handle is then raised and the cutting point is forced toward the center. A very thin shaving should be taken. If the gouge is allowed to roll back so the grind above the cutting point comes in contact with the wood it is sure to catch and gash the wood. 5. SMOOTHING THE FACE. (SMALL SKEW CHISEL.) FIG. 16. For all work up to 3" in diameter, the surface may be smoothed by using a small skew chisel in the same manner as in squaring the ends of Stock in cylinder work. (Step 6--Exercise A-I--1-a, Straight Cuts.) For larger work, place the chisel flat on the rest with the toe next to the stock and the back edge of the chisel parallel to the face to be surfaced. The point of the chisel is then forced toward the center of the stock, using the straight back of the tool as a guide against the finished surface. Only a very thin cut should be taken at a time. [Illustration: Fig. 16.] Note:--While this operation may be termed a scraping cut, it will be found to be much easier on the tool than if the cutting edge were held flat against the work as in other scraping cuts. The surface of the work should be tested for squareness by holding the edge of the chisel or a straight edge across the face. LAYING OFF MEASUREMENTS In laying off measurements on the face of the stock a pencil compass or dividers should be used. Set the compass or dividers to one-half the diameter of the circle wanted. While one point is held at the exact center of the stock, which is easily located while the stock is revolving, the other is brought in contact with the revolving stock until a circle of the correct diameter is marked. [Illustration: Fig. 17.] Should the center of the stock be cut away, rendering this method impossible, the following method may be used: Set the compass or dividers to the exact diameter wanted. Place one point in contact with the stock a little
PREV.   NEXT  
|<   26   27   28   29   30   31   32   33   34   35   36   37   38   39   40   41   >>  



Top keywords:

chisel

 

center

 

diameter

 

cutting

 

contact

 
parallel
 

surface

 

dividers

 
compass
 

Illustration


spindle

 

surfaced

 

forced

 
method
 

scraping

 
SMOOTHING
 

revolving

 

straight

 
wanted
 

circle


tested

 

termed

 

operation

 

easier

 

measurements

 

correct

 

marked

 

Should

 
brought
 

located


easily

 
pencil
 

LAYING

 

impossible

 

holding

 

squareness

 

MEASUREMENTS

 

rendering

 

laying

 

CHISEL


slightly

 

handle

 

raised

 
allowed
 

shaving

 

CALIPERING

 
removed
 
changed
 

DIAMETER

 

ROUGHING