Ubufatanye
UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Brass Reed Shim Rolled Thin and Left Spring-Hard
Reeds and small springs want thin brass that springs back. Roll brass sheet thinner a little at a time, annealing when it stiffens, and leave the last passes unannealed: cold rolling hardens brass, and that hardness is the spring.
The picture: a corroded brass reed plate from a harmonica of the American Civil War era (US National Park Service).
Hagati
Half a day
Amabwiriza
1
1
Anneal the sheet
Anneal the sheet
Cut a strip from the brass sheet, heat it on fire bricks to a dull red and quench it in water.
Ibikoresho by'iyi ntambwe:
Urupapuro rw'Umuringa w'Umuhondo1 igice
Amazi5 litiroIbikoresho bikenewe:
Ibyuma bikata ibyuma bisanzwe
Itara rya Propane
Itafari ryihanganira umuriro
Amafashi y'umucuzi
Indobo yo gukonjesha2
2
Roll it down
Roll it down
Pass it through the rolling mill, closing the rolls a little each pass. When it stiffens and starts to crack at the edges, anneal it again.
Ibikoresho bikenewe:
Imashini isingiya icyuma
Ikigereranyo cya Digitale cy'Amasentimetero 6Itara rya PropaneIndobo yo gukonjesha
Amadarubindi y'umutekano3
3
Finish hard
Finish hard
For the last few passes do not anneal. Roll to the reed thickness, often a few tenths of a millimetre, and check it at several points.
Ibikoresho bikenewe:
Imashini isingiya icyumaIkigereranyo cya Digitale cy'Amasentimetero 64
4
Clean and cut
Clean and cut
Lift the oxide in vinegar with salt, scrub, rinse and dry. Cut it into reed blanks with snips.
Ibikoresho by'iyi ntambwe:
Inkarabyo0.5 litiro
Umunyu20 gIbikoresho bikenewe:
Ibakuli
Ibikoresho by'uburoso bw'insingaIbyuma bikata ibyuma bisanzwe5
5
Pass schedule
Pass schedule
Gupakira ikaye ya Jupyter…
Ibikoresho
4- Umwanya
- 5 litiroUmwanya
- 0.5 litiroUmwanya
- 20 gUmwanya
Ibikoresho bikenewe
10- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
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