The morning news. [volume] (Savannah, Ga.) 1887-1900, 1894-12-30

rs dipped IN the cooling bath. oil or water.
or some secret mixture and IL Is ready
Tor another set OF experts. the men who
manner the cold blade 20 the proper thick
ness 4his tn Itself IS q severe test OF the
temper. and saw blade which success
FULLY passes throurb this sepsrrr,e,f not
only receives that tension" which the
n-i.l nierlns gives 10, but can De etaran-
ecu 50 Tar as the temper is concerned.
ne henlmering makes the blade OF disk
rue perfectly fat. and OF uniform tex
e-Fe. p 10 this point the blade has been
.le same thickness. but in saw the
COINED edge must he thicker than the
middle and back OF the saw. or the saw
would nave no clearance. and would sti-lz
~ the Wood. The smiths hammer the
oiaue thinner back Of the teeth. and this
sINes tne saw that stiffness and tension
Wnich are all-important.
4ne ulade passes from this department
- 'lie polshins-rooms. where Il is ground
aosolutely even and highly polished. Ma
enlnery has TO a great extent taken tbe
Piacs or manual labor I'm grinding and
pohshlng saws. No man can grind "a saw
niAae as quickly and evenly - "a machine
can. out large circular saws are some
times ground on the immense grind stones.
" men lhey are ground by machinery the
alak moves backward and forward he
tween TWO large stones which give il
JCsl the rieht surface When the saws arc
polsheu they are placed in a machine
when automatically sharpens the teeth.
lAeh the handles are fitted on and the
saws are tested and packed.
III semi ci. tular saws IA" tech are in
serted instead Of being cut IN the disk
Inc teeth with their holders are fastened
~ the nm or the disk so that they will not
NY ont when the saw is dipping through "A
lus win IT'S edge racing 10000 feet "a min
H'c. 1et. whom dun the teeth can he
easily removed and new ones inserted at
the saw mill To the unobservat an saw
teelh are alike, but the saw-maker knows
teo'h as chisel solid. beveled. guleet. dia-
.IoHu' nook. lancet and scores OF others.
III ilp-saW is examined Il will be seen
thal the teeth are largest at the handle.
: lS"uaAy diminishing iu size toward the
UP ret To- such perfection has saw
making machinery been brought. q. ma
chlhe Mill take "a blank blade. and. begin
INNS win large teeth at the butt. will
blte out the teeth I'm uniformly decreasing
size to the tip The strip of steel some
lmes eight inches wide and nifty feet
lohs' which makes handsaw. has its
leeth cut BY machinery. The strtp Is fed
INTO the machine; after each bite il moves
along a certain distance, and the machine
bites again. Band saws are gradually
super9edlns circular saws In saw-mills.
Tor on large logs two circular saws are
required. one at the bottom and the other
LOT the top. and sometimes the saws. get
ing irlhe out Of alignments. do not
Track and damaged lumber results.
Inc band saw IS an endless-tooth steel
belt running at a high speed over "a wheel
above the iog and under a similar wheel
beneath the log. With II the largest logs
can De sliced up into boards, and. as the
band saw Is thinner than the circular saw.
the loss of lumber I'm sawdust is less and
more can be obtained from the log.
4 sawmaker has this advice TO give to
carpenters in the selection Of a saw: See
that II hangs right. Grasp it by the
handle and hold 1t in position for work
ing TO see if the handle its the hand prop
erly. A handle should be symmetrical and
the lines perfect Many handles are
made OF green wood; they soon shrink and
become loose. the screws standing above
the wood. Unseasoned handles are liable TO
warp and throw the saw out Of shape. Try
the blade by springing H. seeing that 1t
bends evenly from point to butt in proper
ton as the width and gauge of the saw
vary. The blade should not be too heavy
In comparison TO the teeth, as 1t will re-
quire more labor TO use It. The thinner
You can get a stiff saw the better, IL makes
less 'kerfS and takes less muscle to drive
H. See that the saw Is well set and has a
good crowning breast. Place IL at a dis
lance from you, get a proper Hight on Il
and you can see If there has been any i'm
perfection in grinding or hammering."