Samvinna
LIST
FEGURÐ OG VELLÍÐAN
HANDVERK
MENNING OG SAGA
SKEMMTUN
UMHVERFI
MATUR OG DRYKKUR
ÖFUGVERKFRÆÐI
VÍSINDI
ÍÞRÓTTIR
TÆKNI
KLÆÐANLEG TÆKNI
Rip Saw: a Hand Saw Filed with Upright Teeth and Little Set (Cassell's Cyclopaedia, 1904)
A rip saw cuts along the grain, so its teeth work like a row of small chisels, not like the knife points of a cross-cut saw. Cassell's Cyclopaedia of Mechanics (1904) says how to file one: the fronts of the teeth perfectly upright, the faces given a transverse bevel of only 3 to 5 degrees (the file held at 85 and 95 degrees), and only a little set, less than a cross-cut saw needs.
It gives no tooth size, back angle or amount of set; those are unknown here.
Source: P. N. Hasluck (ed.), Cassell's Cyclopaedia of Mechanics vol. V (1904), p. 73, Setting Saw Teeth. Picture: our diagram.
Miðlungs
An hour
Leiðbeiningar
1
1
Read Cassell's
Read Cassell's
"The teeth in a rip saw should be so filed that their fronts will be perfectly upright. A transverse bevel of from 3° to 5° should be given to the faces of the teeth."
2
2
Clamp the saw
Clamp the saw
Clamp the hand saw in the vice with its teeth just above the jaws, so the blade cannot chatter under the file.
Efni fyrir þetta skref:
Trésmíðasög1 hand sawNauðsynleg verkfæri:
Skrúfstykki3
3
File the teeth upright
File the teeth upright
File each tooth so its front stands perfectly upright to the line of the teeth. Hold the file at 85° to the blade for one side and 95° for the other, to give the faces a transverse bevel of about 5°; 3° is the least. File alternate teeth from one side, then turn the saw and file the others. Tooth size and the slope of the backs are not given (unknown).
Nauðsynleg verkfæri:
Sagarþjöl
Óþekkt mál4
4
Set lightly and evenly
Set lightly and evenly
Set the teeth alternately left and right with the saw set, the same amount on each side. A properly ground ripping saw needs only a little set, less than a cross-cut saw; how much depends on the timber, the thickness of the blade and how it is ground (not given, unknown).
Nauðsynleg verkfæri:
TannbeygitöngÓþekkt mál5
5
History and honest limits
History and honest limits
On the same page Cassell's gives the other hand saws: a cross-cut saw's fronts recline about 10° and need a keener edge, a tenon saw is filed much like a hand saw with less bevel, and a panel saw, used both ripping and cross-cutting, like a mitre saw.
Tooth size, back angle and amount of set are not given; the saw is a hand saw refiled for ripping.
Efni
1- 1 hand sawStaðgengill
Nauðsynleg verkfæri
4- Staðgengill
- Staðgengill
- Staðgengill
- Staðgengill
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