Educational Displays on 3D Printing

Here’s  a quick post to share on the educational 3d printing displays we will be using at Singapore Maker Faire! Some of ya good folks on reddit wanted to get the posters and also some more information on this so here goes!

Will share some ideas and links to demonstration models which can be used too. Please feel free to make use of this ideas and resources to share and let more folks know about 3d printing and its various (do share with us if you do!)

Here’s the link to the PDF of the writeups – https://www.thingiverse.com/thing:3041720

The Setup

We typically will setup the displays with a the informational placards in front of the respective displays. It’s a great way of letting folks (especially the more shy of the lot) to at least read it and take way some information from the showcase, and also works fab for starting a conversation on the various aspects too.

The hand-ons nature of the display pieces also means that visitors can use to touch and get a physical sense of the different models and that helps build curiosity and excitement about it all too.

01 – Layer Height

 

For this first card on Layer Heights, we have a collection of these chess knights which have been 3d printed in a variety of layer heights from 0.10mm through 0.40mm.  This helps give a visual example of the difference in the resolution and details across the various layer height settings.

Also listed on the labels are the print times – this gives a sense of the tradeoff between layer height and time of print.

The model used here is the knight piece from this chess set by SteedMaker (https://www.thingiverse.com/thing:34017)

02 – Infill

The next main setting we like to demonstrate is the amount of infill in a piece. Here, we simply use a cylinder printed with the different infill settings of 0% (vase mode), 10%, 25%, 50% and 100%.

Here, we normally like to explain how 0% is more or less specially reserved for vase mode models, while 10/15% works nicely for most aesthetic (non load-bearing) pieces in that it is strong enough to hold up the side and feel solid to the touch. 25% infill up to 50% are good levels to use for load bearing models which need some strength. On the extreme end of the spectrum, 100% as a solid piece typically end up to be way too overkill in terms of time and material used and sometime will end up slightly deforming the piece too.

03 – Support

Almost any model which requires support material can be used here to show how models which require supports look like when they come off the printer. A before and after (with supports removed) version of the same piece is a great way of helping to visualize this aspect of 3d printing. Here, the magical number of 45 degrees can be explained too.

Here the model we have used is Knight of Egypt by Zorum (https://www.thingiverse.com/thing:1826018)

04 – Articulation

This is where we get to showcase the more fun models which are already well designed with articulation already built in. Here, the idea is to demonstrate the idea that understanding how 3d printed pieces are fabricated will allow one to create interesting pieces which come per-arranged/positioned for articulation. There is some overlapping idea here about how to design to avoid supports too.

For this section, some of the models which we typically like to use are:

 

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Well,  that’s a quick look at our display setup! Now go forth and share with more folks at event around you too! 🙂

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