LCR-T4 Case - Remix of a Remix

thingiverse

There are several versions and remixes of an LCR-T4 case out there. Mine is one of the better ones, if not the best. There are at least two different variants of LCR-T4 boards with slight discrepancies in dimensions. I don't know how to tell the difference, but with a little effort in OnShape, you can verify that this will match your board before printing. Although I call this a remix, I've completely redesigned it in OnShape using the lid from Thing ID 2484675 as a template. You can view it in OnShape here: https://cad.onshape.com/documents/48aa55bd7aefe8f15cf67f69/w/61c4970c37b48f9f93484c9b/e/7a7eaa1c0dc7cadc10977dad. For assembly, you will need: * 4x M3 x 5mm female threaded insert nuts * 4x 10mm M3 Screws (If using battery holder, otherwise use 6mm screws) You will want to use a soldering iron or another heat source to heat up the insert nuts before inserting them into the screw post pillars. Alternatively, you can drill/ream out the holes slightly larger and use superglue. Because of the snap-fit design, you will need a well-calibrated 3D printer and I would recommend a maximum layer height of .2mm. To determine if this will fit your particular variant of LCR-T4 board, print out the 1:1 drawing of the Top Case I've provided in the Onshape document on a sheet of paper (at 100% size) and compare to your board. If you would like to know why I think this is better than other versions on Thingiverse, read on... At the time I downloaded and printed the version I remixed from, it did not fit together well or have any place to hold the battery (it has since been tweaked to address these issues). I ended up taping up the case with masking tape to hold it together. I did not bother making my own design at the time because I did not want to spend the time to measure out all the geometry to get all the right dimensions. Once I understood how to use a mesh object in OnShape to accurately get the right dimensions quickly, I decided to make a better version that suits my design preferences and tolerances. The key benefit of this case design over others is its snap-fit design. The top case will securely fit to the bottom case. No screws are needed for the enclosure to access and replace the battery. In addition, there is a battery holder design that attaches to the back of the PCB instead of being incorporated into the bottom case like several other offerings out there. I make my designs with fairly tight tolerances intended for well-calibrated printers. If this does not fit your board for some reason, you can copy the OnShape document linked above and tweak to suit your needs. I omitted portions of the top case title text to aid in printing (some slicers don't fare well with such small details), but it may not appeal stylistically to some people so I've provided a top case with no text, as well.