UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Blown Glass Jar with a Cork Lid
A jar is blown like a bottle, but instead of a narrow neck its mouth is opened out on the pontil to nearly the full width of the body, with straight walls and a flat base so it stands and can be filled with a spoon. A wide cork punched from bark makes the lid. All furnace work, the gather, the pontil and the annealing follow the bottle blueprint.
Hejuru
Half a day, plus annealing
Amabwiriza
1
1
Gather, blow, pontil and anneal
Gather, blow, pontil and anneal
The furnace, gathering, transfer to the pontil and annealing, step by step.
2
2
Blow a straight-sided bubble
Blow a straight-sided bubble
Gather soda-lime glass, marver it into a cylinder and blow a bubble. Roll it on the marver to keep the walls straight and press the end flat on the marver for the base.
Ibikoresho by'iyi ntambwe:
Ikirahure cya soda n'ishwagara1 kgIbikoresho bikenewe:
Ifuru y'ikirahuri ishobora kugera kuri dogere 1100 Selisiyusi
Umuyoboro wo guhuha ikirahure
Marver (urupapuro rwo kuzunguza icyuma cy'ikirahure)
Intebe y'uhuha ibirahure
Uturindantoki twihanganira ubushyuhe
Amadarubindi y'umutekano3
3
Mark the shoulder
Mark the shoulder
Score a line with the jacks where the mouth will be, just beyond the full width of the body.
Ibikoresho bikenewe:
Ifatanya ry'umukozi w'ikirahuriIntebe y'uhuha ibirahure4
4
Transfer to the pontil
Transfer to the pontil
Attach the pontil to the base, crack the jar off the blowpipe at the scored line.
Ibikoresho bikenewe:
Inkoni ya pontileIntebe y'uhuha ibirahure5
5
Open the mouth
Open the mouth
Reheat the open end and, turning the pontil on the bench rails, open it with the jacks until the mouth is as wide as the body. Fire-polish the rim smooth in the furnace.
Ibikoresho bikenewe:
Ifatanya ry'umukozi w'ikirahuriIfuru y'ikirahuri ishobora kugera kuri dogere 1100 SelisiyusiIntebe y'uhuha ibirahure6
6
Crack off and anneal
Crack off and anneal
Crack the jar off the pontil straight into the annealing oven and anneal it as for the bottle.
Ibikoresho bikenewe:
Itanura ryo koroshya ibyumaUturindantoki twihanganira ubushyuhe7
7
Grind the pontil mark
Grind the pontil mark
When cold, grind the pontil scar on the base smooth on wet abrasive so it stands flat.
Ibikoresho bikenewe:
Urupapuro rwo kunoza
Ibuye ryo gutyaza8
8
Cut a cork lid
Cut a cork lid
Measure the mouth's inside diameter. Punch a cork a little wider than it from thick, boiled cork bark with the cork borer, and taper its lower edge so it presses in.
Ibikoresho by'iyi ntambwe:
Urubaho rw'igishishwa cy'ikizibo0.1 kgIbikoresho bikenewe:
Ikigereranyo cya Digitale cy'Amasentimetero 6
Igitobora ikizibo
Icyuma gikata cy'akaziUrupapuro rwo kunoza9
9
Troubleshooting
Troubleshooting
Jar blowing troubleshooting.
Flow
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Ibikoresho
2- Umwanya
- Umwanya
Ibikoresho bikenewe
14- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
Blueprint zijyanye
Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame
CC0 Umurenge rusange
Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.
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