Printer to Chocolate

There have been a few reasons to celebrate lately around BHiveLabs of late, first of all Matthew and his wife have recently had their second child, and secondly a friend got married. To help celebrate, and to try and expand my skill set a little bit I thought I would try and make some chocolates to give out as gifts.

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Friends in Leeds

A friend of mine is setting up a screen printing co-operative with some other artists in Leeds. The new space is opening on the 14th of October, and we thought that in order to help them out we would send them a sign.

They also have an indiegogo campaign to help with setting up the space https://www.indiegogo.com/projects/help-us-launch-leeds-print-workshop#/ , if you are interested or feeling generous pop across to have a look.


Giant Robot

A friend saw one of our Robot Mk8 keyring holders and wanted a scaled up version so I made one 4 times taller. I didn't bother rescaling the fit parameters of the arms, legs and neck so the joint are pretty loose but he still stands up fine and is still semi poseable. Everyone who sees it wants one now and I can't let my toddler see them or he'd want to keep them all.

img_20160910_071643
298 grams of ABS and 12 hours print time

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Fixing a warped ABS print

TL;DR

ABS prints can warp. Sometimes you can fix them by

  1. Submerging them in near boiling water.
  2. Forcing them back in to shape or even stressing them slightly beyond.
  3. Clamping them in this position, perhaps by weighing them down.
  4. Letting the water slowly cool back to room temperature.

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Enclosure - Version 1

Following on from a previous post on 3D printer enclosures, this is a short post on how to build a very quickly assembled,  cheap and effective enclosure for a Lulzbot Taz 5. We wanted to build one for three main reasons:

  1. Keep smells in.
  2. Keep noise in.
  3. Most importantly, reduce cracked and warped ABS prints like the one below.

This enclosure is only good at number 3 but only takes 10 minutes to assemble and raises the ambient temperature from as low as 12ᵒC to ~38ᵒC. A great improvement for minimal effort and cost.

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ULN2003 Stepper Motor Drivers using Arduino

We got our hands on a few small cheap stepper motors from technobots. Because these stepper motors are geared, they have quite a remarkable number of steps per revolution (2048 full steps, or 4096 microsteps) and come with a small driver board already. These drivers are a small single chip darlington array, and you simply make the 4 input pins high in order to pass current through each coil. This means that unlike more expensive stepper motor drivers you have to manage the coils in the stepper motor yourself, thankfully this is rather straight forward to do this for the Arduino.
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