The Geometric Adjustable Laptop+ Stand

thingiverse

Intro This is a remix of Thomasdc_'s thing "The geometric stand for MacBook Pro Retina" for the Thingiverse remix challenge. I was inspired by the ergonomic design of stand, but wanted to make a more versatile design while keeping with the geometric theme. Prints/parts required 4x axle.stl 4x endcap.stl (I didn't find that they were necessary, but they are more permanent) 2x base.stl 2x arm.stl 2x support Two of any file, _small = 11mm vertical gap, _medium = 16mm vertical gap and _large = 22mm vertical gap. Use _upright if your printer has a large vertical print area (ex. a delta printer) and _side if your printer has a large print surface in the x or y axis (ex. a cartesian based printer) Video: https://www.youtube.com/watch?v=qPuTsGzAU04 Print Settings Printer Brand: RepRap Printer: RepRap Kossel Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: 100 - 300 microns Infill: 30% or more for strength Notes: Supports could be used to increase print quality in some areas, however I didn't find that they were necessary. Additionally, a raft could be used to increase adhesion on some prints, but this did not seem necessary either. Post-Printing Required parts for one stand section (2 are required) Take the base piece, support and an axle, arranging them as shown, pushing the axle through. Grab another axle and the arm piece, pushing the axle through each piece. Once completed move the arm from each notch to change the angle Note: end caps The four end caps (endcap.stl) can also be added were there is exposed axle to finish the stand further, although I did not find this to be necessary. Depending on your print accuracy you may need to scale the end caps between 98% - 102%. How I Designed This To start I simply striped away the geometric design and base of the larger stand piece leaving only the support for the laptop. Next, I took a measurement of the length of the support (≈ 140mm) and then calculated how far apart the notches on the base needed to be to give angles of 45°, 40°, 35°, 30°, 25°, 20° and 15°. This was calculated through the sine law where x/sin(a) = y/sin(b) = z/sin(c). In this case x ≈ 70mm and y = x(√2). By subbing in the required angle, length z could be solved for. Once each z length was calculated the base was modelled with the appropriately distanced notches for each angle. Then, I created two other sizes of support bracket for different sized laptops, devices or objects. Lastly, the arm was modelled and holes were put in place to create hinges so the parts could move properly.