ART
BEAUTY & WELLNESS
CRAFT
CULTURE & HISTORY
ENTERTAINMENT
ENVIRONMENT
FOOD & DRINKS
REVERSE ENGINEERING
SCIENCES
SPORTS
TECHNOLOGY
WEARABLES
Glass Cullet: Scrap Glass Sorted, Cleaned and Broken
Cullet is scrap glass broken up to melt again. It saves energy, because the raw materials in it have already been melted once. Glass keeps its colour, so sort by colour; take out labels, caps, stones and ceramics, and keep out heat-resistant glass, which spoils the melt.
The picture: washed, sorted cullet, a coin for scale.
Beginner
Two hours
Instructions
1
1
Sort
Sort
Spread the scrap glass on the table and sort it by colour. Set aside any heat-resistant (oven or laboratory) glass, ceramics and stones.
Materials for this step:
Glass Bottle (Clear)10 piecesTools needed:
Sorting Table
Leather Work Gloves2
2
Clean
Clean
Soak off labels, take off caps and corks, and scrub the glass clean in water.
Materials for this step:
Water20 litersTools needed:
Bucket
Scrub BrushLeather Work Gloves3
3
Break up
Break up
Dry it, put one colour at a time in a sack and break it with the mallet into pieces a few centimetres across.
Tools needed:
Jute Sack
Wooden MalletLeather Work Gloves
Safety Glasses4
4
Sift and store
Sift and store
Sift out the fine dust, and store each colour in its own bucket, labelled.
Tools needed:
SieveBucketLeather Work Gloves5
5
Energy saved
Energy saved
Loading Jupyter Notebook...
This blueprint makes
Related Blueprints
These blueprints share knowledge with this one — techniques, materials, or principles that connect them in the learning graph.
CC0 Public Domain
This blueprint is released under CC0. You are free to copy, modify, distribute, and use this work for any purpose, without asking permission.
Support the Maker by purchasing products through their Blueprint where they earn a Maker Commission set by Vendors, or create a new iteration of this Blueprint and include it as a connection in your own Blueprint to share revenue.