Monthly Archives: June 2010

Khan Academy

In case you haven’t come across Khan Academy already I highly recommend you take a look. Its a fantastic resource for all things worth knowing in an easy to digest medium, youtube. I only just came across this today and cant wait to brush up my … Continue reading

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What motivates an open source project?

Below is a fantastic short video that helps explain what motivates people to spend countless hours working on an unpaid open source project, such as developing a Reprap So it seems there are three key points that drive people to … Continue reading

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Granular HDPE extruder progress

Today in the little spare time I had I managed to make some progress on the granular HDPE extruder. Here are some photos. This an old, cheap, drill press that i’m using to hold the auger and rotate it. I’m … Continue reading

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Drill bit testing for a HDPE extruder.

Now that I have a small supply of food grade HDPE granules, my next task is to find a way of extruding it. I should point out that I’m not concerned with building an extruder that’s compact enough to go directly … Continue reading

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Commercial Food Grade HDPE Granules

A very good friend of mine helps look after the blow moulding section of a dairy milk processing plant. After I told him about my reprap project he offered to get me some samples of the granular HDPE that they use to … Continue reading

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A Mendel built in sketchup

By using the supplied STL files, a few hours of my time and the mechanical construction  instructions I was able to make a fairly accurate representation of the Mendel in sketchup. You can also see a rather nifty interactive 3D view at this link. … Continue reading

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Importing, exporting and making ‘manifold’ objects in sketchup

In a nut shell: An importer and exporter plugin for STL files in sketchup, along with a program to make your objects ‘mainfold’ can be found in one file here or here (mirror). Read the ‘how to’ text file in … Continue reading

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