UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
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.
Osezingeni eliphezulu
Half a day, plus annealing
Imiyalelo
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.
Izinto zokwakha zalesi sinyathelo:
Ingilazi ye-soda-umcako1 kgAmathuluzi adingekayo:
Isithando sengilazi esikwazi ukufinyelela ku-1100 degrees Celsius
Ipayipi lokuphephetha ingilazi
I-marver (ipulangwe lokugingqa ingilazi)
Ibhentshi lomphephethi wengilazi
Amagilavu Amelana Nokushisa
Izibuko zokuphepha3
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.
Amathuluzi adingekayo:
Udlawu lwabakhi bengilaziIbhentshi lomphephethi wengilazi4
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.
Amathuluzi adingekayo:
Uthi lwe-pontilIbhentshi lomphephethi wengilazi5
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.
Amathuluzi adingekayo:
Udlawu lwabakhi bengilaziIsithando sengilazi esikwazi ukufinyelela ku-1100 degrees CelsiusIbhentshi lomphephethi wengilazi6
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.
Amathuluzi adingekayo:
Isithando sokuthambisa insimbiAmagilavu Amelana Nokushisa7
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.
Amathuluzi adingekayo:
Ishidi lephepha lokuhlikihla
Itshe lokulola8
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.
Izinto zokwakha zalesi sinyathelo:
Ipulangwe lamagxolo kakhokho0.1 kgAmathuluzi adingekayo:
I-Caliper Yedijithali Yamayintshi Ayi-6
Isibhobozi sikakhokho
Ummese wemisebenziIshidi lephepha lokuhlikihla9
9
Troubleshooting
Troubleshooting
Jar blowing troubleshooting.
Flow
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Izinto
2- Isibambeli
- Isibambeli
Amathuluzi Adingekayo
14- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
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- Isibambeli
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- Isibambeli
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