I’ve got my 3D printer, a Prusa MK2, up-and-running in my home office. I followed these instructions for making a mask and this design for the face shield. Both designs are reported to be printable without the use of supports or other fancy settings, so I loaded them on the build plate and off I went. After 5 hours of printing (3 for the mask, 2 for the shield) I ended up with this.
I’m surprised at how well these designs printed with no modifications needed. I’ve got some temperature calibration to tweak because both designs have overhangs that printed poorly but only affected the aesthetics of the final object. Double sided tape worked just fine to keep the document transparency in place. I’m now ready to fight the coronavirus … or clean the litter box.
Do you know what a film canister is? It’s a small plastic container that used to contain film. Do you know what film is? If you don’t, chances are you were born after 2003, which is about the time when digital photography overtook film photography. It’s interesting that the container that was used to store film has actually outlived the film itself; you can buy packs of film canisters on Amazon for about $0.50 a piece. They are useful for storage, art projects and film canister rockets.
I’ve just gotten back from another wonderful BCCE conference (that’s Biennial Conference on Chemical Education) which was held at Notre Dame. It was a great opportunity to catch up with some friends and colleagues that I’ve missed since leaving CSU last year to join the College at Brockport.
I presented some of the work I’ve been doing on 3D printed periodic tables and will blog about their construction and use in the near future. There were some folks in the audience who wanted to get started right away with the objects, so I’ve posted them here on my website. You can download a zip file that contains 19 tables (about 3 MB).
The zip file contains the following periodic trends:
exceptions to the aufbau principle
absolute (Pearson) hardness
For the first four, there are four different sizes
132×76 $mm^2$ table with title, f-block elements and symbols on each of the blocks. These objects take about 3 hours to print.
150×21 $mm^2$ table with no title, no f-block elements and symbols on each of the blocks. These objects take about 2.5 hours to print.
108×36 $mm^2$ table with no title, no f-block elements and symbols on each of the blocks. These objects take about 2 hours to print.
60×24 $mm^2$ table with no title, no f-block elements and no symbols on the blocks. These objects take about 45 minutes to print.
As I build a collection of posts and materials for 3D-printed periodic tables, I will collect them here, so if you have interest in this project, bookmark that page.
Now that my students are wrapping up their summer research activities, it’s time to share some of my new designs. This one is inspired by my students – they wanted to design and 3D print keychains – and Rozenn’s request to have name tags for our plants.
Rosemary, thyme and sage, with a bit of patriotism to boot.
Read on to see how I designed these, which involved a little bit of magic for the swash ornament.
Our hummingbird feeder was inundated with ants. While there are plenty of commercial options available for solving this problem, I wanted to try my hand at designing my own solution. In thinking about how a water trap should be designed, I came up with the following critical elements.
A leak-free cup for the water (duh)
An upper attachment point that prevents tipping of the cup
A lower attachment point that is integrated into the monolithic design.
Here’s the result.
I’m not fast enough with the camera to take a picture of a hummingbird.