Monthly Archives: December 2011

Retraction solution with Marlin, Pronterface and Slic3r

I’ve just fixed some key settings in Slic3r. Retraction Speed is now 7mm per second (down from 100!), and the Retraction Distance is 1mm. There is still slight room for improvement, but this is the best I’ve had it running … Continue reading

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Retraction, Huh! What is it good for?

Retraction is the technique of sucking molten plastic back up into the heated extrusion nozzle of a 3D printer. Like squeezing the edges of a toothpaste tube to suck back in some of the toothpaste you accidentally squeezed out. The … Continue reading

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Getting your motors moving on a MakerGear Mendel Prusa

Here’s a quick and dirty guide to getting your motors working on a MakerGear Mendel Prusa 3D printer kit. I assume you: installed your arduino software installed the Pronterface printer control software installed your copy of MakerGear|Rick’s version of Sprinter, … Continue reading

Posted in 3d printing, Assembly, Software | Tagged , , , , , , | 18 Comments

Updated build instructions – for z-motor mounts

I’ve just learned a better way of assembling the z-motor mounts on the MakerGear Mendel Prusa kit. The two main references are either outdated or confusing (ie, I was wrong and/or confused), so I’ve added some paragraphs to my mechanical … Continue reading

Posted in 3d printing, Assembly | 2 Comments

ATX power supply 5V load resistor for better 12V regulation

Various people (Triffid_hunter in particular) and web sites (e.g. the reprap wiki) have explained that ATX power supplies are a bit cheap in their voltage regulation circuitry. If you want to get the most power out of your 12V cables … Continue reading

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Essential tools for building a MakerGear Mendel Prusa kit

This is a list of tools I found invaluable (hey, I’ve no idea what your workshop situation is like – I hope this is not your first experience with nut and volts…)

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Thermistor connections – screw terminals vs Molex crimping

A couple of days ago I decided to smarten up my Prusa, by covering the exposed threaded rods with plastic “loom tube” (available locally from Jaycar). The 7mm variety fits nicely over the 8mm threaded rod, and also over the … Continue reading

Posted in 3d printing, Assembly | Tagged , , , , , | 2 Comments