April 18, 2013 AT 3:00 am

The Quantum Delta 3D Printer #3dthursday

The Quantum Delta 3D Printer, from the Buildlog.Net Blog:

I was doing an “Intro to 3D printing” event at the Chicago HackerSpace, Pumping Station One.  We were showing about 5 or 6 flavors of printers.  Someone commented how complicated the delta  printer looked. I tried to explain that they were actually simpler in my opinion. Rather than having 3 different designs for each axis, a delta uses three common linear actuators. The delta was a Rostock Max and it does look a little complicated. I decided to try to design the simplest delta I could.

I wanted to make it small to keep the cost down. Once I decided to make it small, I decided to make it really small. I used the Tantalus and Up Mini as the benchmark for small.

  • Make it smaller than a Tantalus or Up Mini
  • Use as few parts as possible (part count).
  • Use as few unique parts as possible (part type count).
  • Use MakerSlide because….duh.
  • Try to use parts I had laying around.  I only had about 3 days to before the first build day.
  • Try using the Spectra Filament instead of timing belts.
  • Clean look and simple wiring.
  • Limit fabrication to 3D printed parts, laser cut parts and simple tools.
  • Try to build it in 1 night at the weekly PS:One meetup and involve as many people as possible.

Somewhere early in the design I got the idea to invert the end effector.  The bed would move and the extruder would be stationary. This vastly simplified the design and I could use an extruder I already had. If I limited it to PLA, the bed would not have to be heated and no wires would have to go to the end effector. With the extruder on top, all electronic items except limit switches could be placed on a single laser cut plate.

The design was bounced off Jeremy BP of tinyworkshop.org a few times in an email thread titled “Latest Crazy Idea”.  This is the rendering of the design going into the build.  There is a pop can rendered on top for size reference….

Read more.

Qm electronics


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