UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Watch Glasses Cut from a Large Blown Bulb
A watch glass is a round, shallow dish of glass, named for the glass on old pocket watches; chemists evaporate drops on it, weigh solids in it and cover beakers with it. Blow a large, even bulb, cut round caps out of its side and grind their edges smooth.
The picture: a powder (stearic acid) held on a watch glass.
Hagati
An hour
Amabwiriza
1
1
Blow a large bulb
Blow a large bulb
Close a tube, gather glass and blow a large bulb with an even wall, turning all the time so it stays round. Anneal it in the kiln.
Ibikoresho by'iyi ntambwe:
Agafuka k'imiyoboro y'ikirahure1 igiceIbikoresho bikenewe:
Itara ryo ku meza ryo guhuha ikirahure
Itanura
Amadarubindi y'umutekano
Uturindantoki twihanganira ubushyuhe2
2
Cut the caps
Cut the caps
Score circles on the side of the bulb with the diamond scriber, tap from inside to run the cracks, and nibble the caps free with grozing pliers.
Ibikoresho bikenewe:
Agati ko gushushanya k'idayimani
Amafashi yo kwerura ikirahureAmadarubindi y'umutekano3
3
Grind the edges
Grind the edges
Rub each edge on a flat plate with wet fine grit until round and smooth. Wash and dry.
Ibikoresho by'iyi ntambwe:
Amazi1 litiroIbikoresho bikenewe:
Ikigereranyo cya Digitale cy'Amasentimetero 6
Udukombe twa karubide ya silikoni4
4
Caps from one bulb
Caps from one bulb
Gupakira ikaye ya Jupyter…
Ibikoresho bikenewe
8- Umwanya
- Umwanya
Iki gishushanyo gikora
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