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Forged Geologist's Pick
Forge

Yaremwe na

Forge

11. Ukwakira 2026NO
29
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Forged Geologist's Pick

A geologist's pick of about 2½ pounds, with a square striking head on one side of the eye and a long curved point on the other, forged from 1¼ × 1¾-inch tool steel. After the eye is punched, the bar is cut part way through beside it with a hot chisel and the waste cut away, then each end is drawn out, under a power hammer in the original. The point is hardened like a cold chisel and tempered to dark blue; the head is then hardened about 2 inches back and tempered to brown or dark straw, with damp coal round the point so it is not softened again.
Hejuru
4–6 hours

Amabwiriza

1

Mark and punch

Mark the stock with a centre punch and chisel, and punch the hole for the eye.

Ibikoresho by'iyi ntambwe:

Inkoni iringaniye y'icyuma cy'ibikoreshoInkoni iringaniye y'icyuma cy'ibikoresho1 igice

Ibikoresho bikenewe:

Igicukuzi cyo Gushyira IkimenyetsoIgicukuzi cyo Gushyira Ikimenyetso
Uruganda rw'umucuziUruganda rw'umucuzi
IngoyiIngoyi
Igitobora gishyushyeIgitobora gishyushye
Amafashi y'umucuziAmafashi y'umucuzi
2

Cut beside the eye

With a drift in the eye, flatten the sides. Cut part way through 3/16 inch from the edge of the hole on both sides, round the bottom of the cuts with a thin fuller, and cut out the waste.

Ibikoresho bikenewe:

Igikoresho cy'umucuzi cyagura umwoboIgikoresho cy'umucuzi cyagura umwobo
Icyuma gikata gishyushyeIcyuma gikata gishyushye
Fuller (icyuma cyo gucukura imirongo)Fuller (icyuma cyo gucukura imirongo)
3

Draw out the ends

Draw out one end, cut the pick from the bar, then draw out the other end to the point's form.

Ibikoresho bikenewe:

Inyundo izamurwa ikagwaInyundo izamurwa ikagwa
Inyundo niniInyundo nini
4

Finish the head and point

With the drift in the eye, smooth around it with a set hammer. Finish the head with set hammer and flatter and cut it square from four sides; finish the point with a flatter and cut it to length. Grind face and point.

Ibikoresho bikenewe:

Inyundo yo gushyira intambweInyundo yo gushyira intambwe
Igikoresho cy'umucuzi cyo kuringanizaIgikoresho cy'umucuzi cyo kuringaniza
Icyuma gikata gishyushyeIcyuma gikata gishyushye
Imashini ihyeza yo ku mezaImashini ihyeza yo ku meza
5

Harden and temper

Harden the point like a cold chisel and temper it to dark blue. Then heat about 2 inches of the head, keeping damp coal around the point, harden it the same way and temper it to brown or dark straw.

Ibikoresho bikenewe:

Uruganda rw'umucuziUruganda rw'umucuzi
Indobo yo gukonjeshaIndobo yo gukonjesha
Amafashi y'umucuziAmafashi y'umucuzi
Umwenda wa emeriUmwenda wa emeri
6

Handle

Shave the handle stock to fit the eye tightly, drive the head on, saw a kerf in the handle's top and drive a glued hardwood wedge into it. Trim flush and oil the handle.

Ibikoresho by'iyi ntambwe:

Igiti gikomeye cy'imikondoIgiti gikomeye cy'imikondo1 igice
Igitsindo cy'ibiti bikomeyeIgitsindo cy'ibiti bikomeye1 igice
Amavuta y'UbudodoAmavuta y'Ubudodo10 ml

Ibikoresho bikenewe:

Ikirwanya gifite imifatiro ibiriIkirwanya gifite imifatiro ibiri
Umusumeno w'abantu babiriUmusumeno w'abantu babiri
Ifatiro ry'AmezaIfatiro ry'Ameza

Ibikoresho

4

Ibikoresho bikenewe

18

CC0 Umurenge rusange

Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.

Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.

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