3D printing in commercial products

I was recently tinkering with a thing at work, and was surprised to find that a couple internal parts of this thing are 3D printed using a printer of the same type we’ve got at the makerspace!

This is a Thinklabs One digital stethoscope, available for sale online through mainstream retailers for about $500USD. Check out the grey plastic ring around the blue part.


Talk: 3D printing

Here’s some references from the 3D printing talk:

First of all Thingiverse where you can find 1000s of things to build and make


The “reprap host” slicing application can be downloaded from reprap.org


you’ll need a working Java runtime to use it.
You need to download the config file for our working reprap from:


install it in ~/.reprap (or wherever else reprap host stores stuff on your computer). To slice:

  • press ‘load STL’ to load an object
  • drag the loaded object a little on to the be – about 1 square diagonally
  • press the green ‘Print’ button

always quit and restart reprap host between objects – put the resulting ‘.gcode’ file on a USB key and bring it in to print


There’s also a design guide to help you make stuff that prints well:


OpenSCAD – the 3D CAD program I was using is available at:


Instructions for repairing bogus STL files:

You can also use netfabb http://www.netfabb.com/.