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Making a Makerbot (part 4) – Paxtruder

An area that causes problems in the Makerbot is the filament drive mechanism. It has to be adjusted just so, or the filament will get jammed or strip. The system that keeps the filament engaged with the drive wheel is an acrylic idler wheel, which is sometimes uneven or wobbles. Also, the adjustment for idler […]

Things I have learned (part 2)

Here’s another batch:

When someone asks if you know something, a simple “yes” is rarely the best answer. Stating what you know and confirming it is better. Constraints increase creativity Doing things, however imperfectly, has an effect. Just thinking about things does not. Dessert recipes in English almost always benefit from halving the amount of […]

Making a Makerbot (part 3) – heated build platform

I got around to assembling the heated build platform for my Makerbot. The heated platform is super-useful, as it prevents printed pieces from warping as they cool, and removes (sometimes) the need for a “raft” to help pieces adhere to the platform.

Heated build platform in action, printing an Escher cookie cutter

I’d […]

Things I have learned (part 1)

First in a series of things I have learned that are not immediately obvious.

People who know how to ask for help are more popular and successful than those who offer unsolicited help When someone is snoring, gently stroking their neck along the line of the carotid artery will silence them In an organization, misbehavior […]

Making a Makerbot (part 2)

Added some additional finishing touches to the Makerbot today to make disassembly easier, and make it easier to manage.

First, a terminal block mounted on the extruder body. This allows individually disconnecting the motor and the heater barrel from the extruder, and using shorter wires.

Terminal block on extruder head

Unfortunately, the spacing […]

Calibrating skeinforge for a Makerbot

I recently built a Makerbot, and have been working on getting it to print nice-looking objects. This was an interesting learning process, and I thought I’d outline what I did, in case it is of interest. Most of the effort was in configuring a software tool called Skeinforge, a program that will take a 3D […]

Making a Makerbot (part 1)

I recently put together Makerbot #1479, from Batch XIII. This is a simple 3D printer, a device that actually prints real objects using ABS plastic. It’s sold as a kit of parts for self-assembly.

The process was quite straightforward, but I made a number of modifications that seem to make it more reliable and easy […]