Five months ago we left Australia and moved to just outside Nashville, Tennessee, USA. Since then our time has been occupied with searching for a house, buying a house, moving into a house, and now renovating a house. The renovations are not yet complete, but I have at last got the bulk of my computer […]

E6000 console battery replacement

Place the console face down Remove 4 screws holding back cover in place, and remove cover  Remove screw from power cable bracket  Remove 2 screws from ribbon cable bracket  Unplug ribbon cable  Remove 4 long screws from power transformer  Remove 2 screws from circuit board  Remove 4 screws from corners of circuit board   Remove […]


Earlier I pondered the rarity of worm drive extruders. Upon reflection I can see that at least one reason would be the twisting imposed on the filament by the worm, but this filament-twisting could be eliminated by simply putting a gear driven by the worm between worm and filament. Another experiment joins the queue.

It’s all relative

I realise I threw around one particular gear ratio without any explanation. It is usually considered important to maximise the potential life of 3D-printed gears. If (for example) one tooth happens to be misshapen, then it will apply slightly different pressure to each tooth that it meshes with than will the other teeth on that same […]

So it begins

Many people choose New Year’s Day to make resolutions; I’m going to get in early by starting this exercise in extraversion today. One of my motivations is to put down in writing (etc.) the assorted project ideas running around inside my head. Foremost right now is my “build a better RepRap” project, so I’ll dive […]