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Extrusion is a little different but similar. It would be easy to confuse the two.
Extrusion is forcing material through a die to get a shape. There’s a play dough toy that is effectively a play dough extruder. You put the dough in the hopper, press a lever, and you get a star or whatever.
The surface finish you get kinda depends on the material, it will feel very smooth but won’t be nearly as smooth under a microscope as this. If you’re in to 3D printers, the aluminum arms are generally made of 80/20 T slot, which is an extruded material. Also like, all dry pasta is made this way.
Drawing is stretching the material. You’re pulling it through the die rather than pushing it, and getting a shape, and the act of stretching it out makes it incredibly smooth and can yield a stronger product.
This is also how record stylus needles are made. And frequently brass tubes. It’s not done through dies, but Chinese noodles are made in a similar process, constantly stretching until they’re the desired size.
Extrusion?
Extrusion is a little different but similar. It would be easy to confuse the two.
Extrusion is forcing material through a die to get a shape. There’s a play dough toy that is effectively a play dough extruder. You put the dough in the hopper, press a lever, and you get a star or whatever.
The surface finish you get kinda depends on the material, it will feel very smooth but won’t be nearly as smooth under a microscope as this. If you’re in to 3D printers, the aluminum arms are generally made of 80/20 T slot, which is an extruded material. Also like, all dry pasta is made this way.
Drawing is stretching the material. You’re pulling it through the die rather than pushing it, and getting a shape, and the act of stretching it out makes it incredibly smooth and can yield a stronger product.
This is also how record stylus needles are made. And frequently brass tubes. It’s not done through dies, but Chinese noodles are made in a similar process, constantly stretching until they’re the desired size.