UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Steel Rivets Forged in a Nail Header
A rivet is a short rod with a head on one end; set through a hole, its tail is hammered into a second head, and it holds the parts together for good. Solid rivets go back to the Bronze Age. They are forged the way nails are, headed in a nail header, only the shank is cut off square instead of drawn to a point.
The picture: riggers setting red-hot rivets on the Sydney Harbour Bridge, 1930–31 (Sam Hood).
Hagati
An afternoon for a few dozen
Amabwiriza
1
1
Heat the rod end
Heat the rod end
Heat the end of a mild steel rod of the rivet's diameter in the forge to a bright orange.
Ibikoresho by'iyi ntambwe:
Umurongo Uzengurutse w'Icyuma Cyoroshye1 m
Amakara1 as requiredIbikoresho bikenewe:
Uruganda rw'umucuzi
Amafashi y'umucuzi
Uturindantoki two gukomeza ibyuma
Amadarubindi y'umutekano2
2
Nick at length
Nick at length
Nick the rod nearly through on the hot cut hardy at the rivet's length plus enough for the head (see the notebook).
Ibikoresho bikenewe:
Ingoyi
Icyuma gikata ku ngoyi
Inyundo ifite umutwe utambitseUturindantoki two gukomeza ibyumaAmadarubindi y'umutekano3
3
Head it
Head it
Drop the end into the nail header over the anvil's pritchel hole, with the head stock standing proud, and spread it with three to five quick blows, as for a nail head. Snap it free at the nick.
Ibikoresho bikenewe:
Ikibaho gikora imitwe y'imisumariIngoyiInyundo ifite umutwe utambitseUturindantoki two gukomeza ibyumaAmadarubindi y'umutekano4
4
Cool and check
Cool and check
Let the rivets cool (do not harden them: the tail must spread cold or hot when set). Check the shank with a caliper; file off any burr so it slips into its hole.
Ibikoresho bikenewe:
Indobo yo gukonjesha
Ikigereranyo cya Digitale cy'Amasentimetero 65
5
Rod for each rivet
Rod for each rivet
Gupakira ikaye ya Jupyter…
Ibikoresho bikenewe
10- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
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