UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Steel Drawplate with Graded Tapered Holes, and Draw Tongs
A drawplate is a hardened steel plate pierced with a row of tapered holes, each a little smaller than the last. Annealed wire, filed to a point, goes into a hole just smaller than itself and is pulled through with draw tongs, coming out thinner; plates also come with square, half-round or hexagonal holes. Make the plate and the tongs.
The picture: two drawplates with numbered rows of holes.
Hejuru
Two days
Amabwiriza
1
1
Forge the plate
Forge the plate
Forge tool steel to a flat plate about 150 × 35 × 8 mm (our size) and anneal it.
Ibikoresho by'iyi ntambwe:
Inkoni iringaniye y'icyuma cy'ibikoresho1 igice
Amakara2 as requiredIbikoresho bikenewe:
Uruganda rw'umucuzi
Ingoyi
Inyundo ifite umutwe utambitse
Amafashi y'umucuzi
Uturindantoki two gukomeza ibyuma
Amadarubindi y'umutekano2
2
Drill and taper the holes
Drill and taper the holes
Lay out a row of holes stepping down in size (step 5), drill each, then open it to a taper from the back face with a hot tapered punch, so it is widest at the back and narrowest at the front. True each mouth with a needle file.
Ibikoresho by'iyi ntambwe:
Amakara2 as requiredIbikoresho bikenewe:
Igikoresho cyo gutobora gikoreshwa n'intokiUruganda rw'umucuzi
Igitobora gishyushye
Igikoresho cy'umucuzi cyagura umwobo
Ikusanyirizo ry'Amakariso Mato
Igifata gikomeye cy'ameza y'akaziUturindantoki two gukomeza ibyumaAmadarubindi y'umutekano3
3
Harden and temper
Harden and temper
Grind the faces flat, harden the plate in water and temper it to a straw colour so the holes keep their size.
Ibikoresho by'iyi ntambwe:
Amazi10 litiroIbikoresho bikenewe:
Ibuye ryo gutyaza ry'uruzigaUruganda rw'umucuzi
Indobo yo gukonjeshaAmafashi y'umucuziUturindantoki two gukomeza ibyumaAmadarubindi y'umutekano4
4
Draw tongs
Draw tongs
Forge two short, stout jaws with long reins from wrought iron, file cross teeth in the jaws to bite the wire, rivet them, and bend the end of one rein into a hook so the grip can be held or hauled.
Ibikoresho by'iyi ntambwe:
Umugozi w'icyuma cyacuzwe2 ibice
Ibyuma byo guhambira1 igiceAmakara2 as requiredIbikoresho bikenewe:
Uruganda rw'umucuziIngoyiInyundo ifite umutwe utambitseIgitobora gishyushye
Ikariso ry'IcyumaAmafashi y'umucuziUturindantoki two gukomeza ibyumaAmadarubindi y'umutekano5
5
Hole sizes
Hole sizes
Gupakira ikaye ya Jupyter…
Ibikoresho
5- Umwanya
- 2 as requiredUmwanya
- 10 litiroUmwanya
- 2 ibiceUmwanya
- 1 igiceUmwanya
Ibikoresho bikenewe
14- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
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