SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Hand Saw: Plate, Teeth, Temper and Handle
Hand saws were made like this in the saw works of the 1880s. Steel plate is sheared to the outline of the blade and the teeth are punched in a press. The toothed plate is heated to a light cherry red and plunged into a bath of oil, tallow, rosin and beeswax, which leaves it as brittle as glass; it is then flattened between heated dies until it reaches a blue, the colour of spring temper. After smithing and grinding, the teeth are set, bent alternately left and right, and filed sharp, and a wooden handle is riveted on. Today the plate is laser cut and the teeth are ground and flame hardened.
Juu
Factory process (1880s)
Maagizo
1
1
Cut the plate
Cut the plate
Shear the steel plate to the outline of the blade.
Vifaa kwa hatua hii:
Bamba la feleji la ubapa wa msumeno1 kipandeZana zinazohitajika:
Makasi ya mabamba2
2
Punch the teeth
Punch the teeth
Punch the teeth along the edge with a shaped die in a press.
Zana zinazohitajika:
Mkandamizo wa kutoboa meno ya msumeno3
3
Harden
Harden
Heat the toothed plate to a light cherry red and plunge it into a bath of oil, tallow, rosin and beeswax. It comes out as brittle as glass and buckled.
Vifaa kwa hatua hii:
Mafuta ya Mnyama (Shahamu)1 kg
Ubani wa msonobari0.5 kg
Nta ya Nyuki0.5 kg4
4
Flatten and temper
Flatten and temper
Clean off the scale and grease and press the plate flat between heated dies until it turns blue, the spring temper. Test it by bending: a good blade springs back straight.
Zana zinazohitajika:
Kalibu zenye joto za kusawazisha5
5
Smith and grind
Smith and grind
Hammer out any remaining unevenness on a stake, then grind the blade to its gauge on a grindstone.
Zana zinazohitajika:
Jiwe la kunoa la gurudumu6
6
Set and sharpen
Set and sharpen
Set the teeth alternately left and right with a saw set, joint the points level with a file, and file each tooth sharp with a triangular file.
Zana zinazohitajika:
Kifaa cha kupinda meno ya msumeno
Tupa ya chuma7
7
Fit the handle
Fit the handle
Shape a handle from beech and fix the blade in it with rivets.
Vifaa kwa hatua hii:
Mbao za mbeech1 kipande
Riveti za mpini wa msumeno3 vipandeVifaa
6- 1 kipandeKishikilia Nafasi
- Kishikilia Nafasi
- 0.5 kgKishikilia Nafasi
- 0.5 kgKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 3 vipandeKishikilia Nafasi
Zana Zinazohitajika
6- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Mchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.