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Borosilicate Measuring Jug with a Pulled Handle
A measuring jug is a wide glass beaker with a pouring spout, a handle and volume marks; in borosilicate it takes boiling liquids. Make the body as for a beaker from wide tube, fuse on a handle drawn from thick rod, anneal, and mark it by weighing water.
The picture: an old glass measuring cup with its handle applied hot and a stamped seal (Metropolitan Museum of Art).
Advanced
Two hours, plus annealing
Instructions
1
1
Body
Body
From wide borosilicate tube, close and flatten a bottom, flare the rim and pull a deep spout, as for a beaker.
Materials for this step:
Glass Tubing Kit1 pieceTools needed:
Bench Glassblowing Torch
Jacks
Marver
Safety Glasses
Heat-Resistant Gloves2
2
Handle
Handle
Heat a spot below the rim opposite the spout and the end of a thick rod together, press the rod on, bend it round in a loop and fuse its lower end to the side.
Materials for this step:
Borosilicate Glass Rod1 pieceTools needed:
Bench Glassblowing TorchHeat-Resistant Gloves3
3
Anneal
Anneal
Anneal the jug in the kiln at once and cool it slowly; a handle joint is where strain collects.
Tools needed:
Kiln4
4
Mark it
Mark it
Stand it on the balance, add water 50 g at a time and scratch a line at each level.
Materials for this step:
Water1 literTools needed:
Balance Scale
Diamond Scriber5
5
Marks by weight
Marks by weight
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Materials
3- 1 piecePlaceholder
- 1 piecePlaceholder
- 1 literPlaceholder
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