UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Stemmed Glass Funnels Opened from a Blown Bulb
A filter funnel is a glass cone on a narrow stem: a folded filter paper sits in the cone and the clear liquid runs down the stem. Blow a bulb on a tube, cut the bulb open, spread it into a cone the shape of a folded paper, and the tube left below is the stem.
The picture: a small glass funnel standing upside down, the opened bulb on its tube stem.
Hejuru
An hour per funnel, plus annealing
Amabwiriza
1
1
Blow a bulb
Blow a bulb
Close one end of a tube, gather glass there and blow a thin bulb, as for a flask.
Ibikoresho by'iyi ntambwe:
Agafuka k'imiyoboro y'ikirahure1 igiceIbikoresho bikenewe:
Itara ryo ku meza ryo guhuha ikirahure
Amadarubindi y'umutekano
Uturindantoki twihanganira ubushyuhe2
2
Open the bulb
Open the bulb
Heat the far end of the bulb until it softens and blow it out thin, then knock or score away the thin part, leaving a cup on the tube.
Ibikoresho bikenewe:
Itara ryo ku meza ryo guhuha ikirahure
Agati ko gushushanya k'idayimaniAmadarubindi y'umutekano3
3
Spread the cone
Spread the cone
Heat the cup's rim and spread it with the jacks, turning, into a straight-sided cone. Check it against a filter paper folded into quarters until the paper sits flat against the glass.
Ibikoresho by'iyi ntambwe:
Urupapuro rwo Kuyungurura1 igiceIbikoresho bikenewe:
Itara ryo ku meza ryo guhuha ikirahure
Jacks (ifatanya ry'umukozi w'ikirahuri)Uturindantoki twihanganira ubushyuhe4
4
Cut the stem
Cut the stem
Score and snap the tube to stem length with a slanted cut so drops run off the point, and fire-polish the end.
Ibikoresho bikenewe:
Agati ko gushushanya k'idayimaniItara ryo ku meza ryo guhuha ikirahure5
5
Anneal
Anneal
Anneal in the kiln at the glass's annealing temperature and cool slowly.
Ibikoresho bikenewe:
Itanura6
6
Cone for a filter paper
Cone for a filter paper
Gupakira ikaye ya Jupyter…
Ibikoresho
2- Umwanya
- 1 igiceUmwanya
Iki gishushanyo gikora
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