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KECANTIKAN & KESEJAHTERAAN
KRAFTANGAN
BUDAYA & SEJARAH
HIBURAN
ALAM SEKITAR
MAKANAN & MINUMAN
KEJURUTERAAN TERBALIK
SAINS
SUKAN
TEKNOLOGI
BOLEH PAKAI
Two-Man Crosscut Saw: Bellied Blade, Scorers and Cleaners
The two-man crosscut saw cuts a log across the grain, a handle at each end. Grimshaw (1882) describes it: the blade is twice as wide in the middle as at the ends, for stiffness and for the wear there; scorer teeth cut the fibres at both sides of the kerf, and slightly shorter cleaner teeth plough out the wood between.
The picture: two men bucking a white pine log with a crosscut saw, about the 1890s.
Lanjutan
Several days
Arahan
1
1
Shear the bellied plate
Shear the bellied plate
Shear rolled saw plate to the outline: straight back, toothed edge curving out so the middle is twice as wide as the ends (Grimshaw).
Bahan untuk langkah ini:
Kepingan keluli bilah gergaji1 kepingAlatan diperlukan:
Ricih plat
Sarung tangan kimpalan
Cermin mata keselamatan2
2
Punch the teeth
Punch the teeth
Punch the teeth with shaped dies in the press: groups of scorers with a cleaner between, the cleaners a little shorter. Cut the gullets near the middle deeper than at the ends.
Alatan diperlukan:
Mesin tebuk gigi gergajiSarung tangan kimpalanCermin mata keselamatan3
3
Harden
Harden
Heat the toothed plate evenly to a light cherry red and plunge it into a bath of oil, tallow, rosin and beeswax (Grimshaw; his oil was whale oil, ours is lard oil). It comes out as brittle as glass.
Alatan diperlukan:
Relau tukang besi
Penyepit tukang besi
Minyak pemotong
Lemak Haiwan (Lemak Cair)
Damar pain
Lilin LebahSarung tangan kimpalanCermin mata keselamatan4
4
Flatten and temper
Flatten and temper
Scour off the scale and press the plate flat between heated dies until it shows blue, the spring temper (as Grimshaw gives for handsaws).
Alatan diperlukan:
Dai perata berpemanasSarung tangan kimpalanCermin mata keselamatan5
5
Grind thin at the back
Grind thin at the back
Grind both faces, working from the back toward the teeth, until the back is two to four gauges thinner than the toothed edge, so the blade clears its kerf.
Alatan diperlukan:
Batu canai rodaSarung tangan kimpalanCermin mata keselamatan6
6
Set and file
Set and file
Set the scorers alternately left and right, file the scorers to points, and file the cleaners square and a little lower.
Alatan diperlukan:
Pelaras gigi gergaji
Kikir gigi gergaji7
7
Handles
Handles
Turn two hardwood handles, drill them, and bolt one upright through each end of the blade with a short iron rod peened over (our fitting).
Bahan untuk langkah ini:
Jalur kayu keras2 keping
Bar Bulat Keluli Lembut0.3 mAlatan diperlukan:
Pelarik galah
Gerimit tangan8
8
Plate for a 6-foot cross-cut
Plate for a 6-foot cross-cut
Memuatkan buku nota Jupyter…
Bahan
3- 1 kepingPemegang Tempat
- 2 kepingPemegang Tempat
- Pemegang Tempat
Alatan Diperlukan
16- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
- Pemegang Tempat
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