Teck Flashcards
Pillar drill safety
We’re goggles Wear apron Tie hair back No loss clothing Clamp work in machine vice Do not leave Chuck key in Chuck
Fret saw
Safety
Wear goggles Tie back long hair Do not touch fret saw blade One person on saw Ensure gard is on machine Check blade tension and wear and tear Turn off machine after use Check for obstructions around machine
Vernier gauge
Used to measure thickness of materials and diameters
Thermopolymer
. Soften when heated
.can easily be shaped when heated
.when reheated it will go back to its original shape
Acrylic
Thermo polymer witch means it can be easily bent when heated. It comes in lots of different colours and has a smooth shiny surface. It is ridge but can shatter if under too much pressure.
Thermosetting polymer
.Once moulded it can’t be remoulded even with heat provided
. Come as eather sheet or liquid which can be made to set
.they can withstand high temp
Impact of polymers to the environment
Threat to marine life and birds
Most are not recycled causing pollution
Use fossil fuels which cause global warming
Pollution of microplastics in what we eat, drink and breath