Freeside Atlanta

     Have you ever needed to cut a circle? Turns out you can't just freehand that. If you want to cut a circle you need a.... Circle Jig! This handy little thing straps onto a standard router. You stick a pin in one of the little holes for the center, strap a router to the other side and route yourself a circle. Here's a commercial circle jig. Seems simple enough. Now what if you want this thing -Right Now-? Well then you better have a Laser Cutter and some Acrylic. Step 1 of the design comes from measuring out the dimensions of the existing router plate. What are those curved holes for? Who knows? But they look cool right? Starting from a base circle of diameter 1/4 in (size of the router bit) we offset another circle at some whole number of mm to mark the smallest radius we can cut. Then we offset a whole bunch of other circles in 2mm increments. Then add some horizontal lines. We want to place the center holes at intersections of the horizontal lines and ci

As the cold weather season arrives in Atlanta, with it comes issues with our 3D printers. Specifically problems with temperatures and print stability. Freeside is essentially a big warehouse, and our 3D printing station is setup in the large open area in the front of the space. What this means is that when it is cold in the space, this will affect the printing quality because the ambient temperature is far lower than what is optimal for thermoplastics. The cold ambient air will cause parts to rapidly cool during the middle of a print. And with materials like ABS which can shrink dramatically during cooling, this causes prints to warp, deform, and delaminate during and after printing is finished. The print on the left is showing signs of delamination from plastic cooling mid print. To remedy this, we built an acrylic enclosure for our LulzBot AO-100, which is our dedicated ABS printer. We tested the proof of concept of whether an enclosure would help mitigate printing problem

A few years ago, a Freeside collaboration resulted in some published medical research on using 3D Printing in pre-surgery planning . In our second collaboration, we used gaze tracking to gather data on how surgeons with different levels of experience look at radiographs when diagnosing hallux valgus deformities. The new paper got published in the current issue of the Journal of Foot and Ankle Surgery . Interestingly enough, we actually came up with the concept for this project during a meetup about interactive art installations. The idea of eye tracking came up and we discussed what we could discover with the technology. So we started to try to figure out how to a study with the free and open-source tools available. We ended up needing: A webcam to look at the user's eyes. ITU Gaze Tracker to calibrate and interpret that data. (However, their website is now down, so I'm not sure how viable this is as part of the toolchain now.) OGAMA - Open Gaze and Mouse Analysis

A bunch of great stuff got done at the build-out yesterday. A huge thanks to everyone that came out to pitch in! Here are some pictures to recap the projects... Randy's team hung the curtain to the workshop to create more of a barrier between the front of the house and back of the house and to control dust levels a bit more. We'll be finishing the top of the wall soon, but the hard part's already done. Karen, Donald, Tom, Violet, and James framed the doorway to the Media Lab and Bio Lab and hung the door for that area. Next step is AC! Michelle and Mary's team cleaned out project storage and moved the shelves over so that Neils could put the flammability cabinets in that area. That allowed all of us with the help of Adam and Nathan to clean up the workshop and really tidy up. They also sorted out all of the laser cutter raw materials and cut them down to a usable size on the table saw.  For the portal clouds, JW, Nathan, and Kat rolled an aw