.: Archive

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That Was A Goodness

Jun 16th

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Hand Crank Extruding

Jun 14th

2 notes

Jun 14th

4 notes

Jun 14th

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Gear Testing 1

Jun 13th

1 note

Jun 13th

Potential Gears.

Heres the potential gears that might drive the extruder. they Currently have a 1:9 Ratio and having two sets combined with this motor from jaycar would be almost perfect RPM of around 100 and should provide enough toque. Link to Jay Car about the motor - http://www.jaycar.co.nz/productView.asp?ID=YM2716&keywords=motor&form=KEYWORD There might be enough material strength in acrylic if...

Jun 12th

The Mixer.

The Mixer worked pretty well with HPDE and PET when it was run for about 30 minutes but its really not feasibleA kitchen wizz would probably work better because it would cut rather than munch, but they are expensive for what we might get/use out of it. looked in second hand stores and trademe Heres a quick model of the kind of chopper that would work best for all type of materials and states. Also...

Jun 12th

Jun 11th

1 note

Jun 11th

1 note

Jun 11th

Jun 10th

Wire Nichrome Supply →

Jun 10th

1 note

Extrude some plastic!!

Jason has been trying to extrude some plastic through the screw extruder and see if it has any issues. In manufacture they use a screw with a variable thread and spacing to increase pressure, move material in different states and maintain temperature within the chamber. So far the best suited is a 8mm wood orger for drilling holes - run in reverse.If this does not work a 10-15mm Coach Screw may...

Jun 10th

Variable Temprature Melting Points.

Jason has been looking at the variable temperature melting points and it has something to do with re-melt and amount of moisture within the plastic during flake to melt stage. If the plastic is not kept below a certain Moisture content the water has a chemical reaction within the plastic and causes it to break down back into its primary elements causing a higher temperature to re-melt again....

Jun 10th

Circuit Diagram

Ben has been working on a circuit for the heating component of the extruder with help from Tiago. The best material to make the barrel out of is brass but we need some kind of heat insulator between the barrel and the electronics. Apparently wood is good.

Jun 9th