WT-LC 80mm Fan Latching Case for Re-ARM + RAMPS 1.6 (with STEP files)

thingiverse

My Re-ARM printer was overheating and losing steps, and so I added fans to the steppers and rigged up a fan for the controller but it wasn't enough. This is my solution, it's a clam-shell case utilizing an 80mm PC fan for use with a <strong>Re-ARM</strong> plus RAMPS 1.6 board. So far it's working great and I have had no more overheating problems. Although I made this for my Re-ARM + RAMPS 1.6 board, <strong>I also included a base and faceplate model that I think will work with an Arduino Mega + RAMPS 1.6</strong>. The parts needed for that are below and they are customized for the Arduino Mega. I recommend printing "Re-ARM-fan-endpiece.stl" first in your chosen material, and then verify it fits the 80mm fan. If it doesn't fit, you may need to calibrate the extruder. Thanks to the following people for creating the models which helped me to design this: * Re-ARM controller model by PeterEllens * Ramps 1.4 by 3dboxpro Mar 25, 2015 * 80mm computer Fan by bramesh501 Mar 28, 2017 I have included the STEP (.stp) files for easy remixing. Couple notes on assembly: * The end pieces are not interchangeable. * The M4 inserts are used for the structure and the M3 are used only for the standoffs for the boards on the base part. These can be installed using a soldering iron, or the way I did it, using Gorilla Glue and a fine adjustment tool (hammer). * The 2x M4 washers are used between the door and the end pieces, there is a notch out where they should sit, adding some glue may help keep them in place during assembly. * To assemble the latch: - Place slider inside the channel in the door and make sure it slides freely, of not, sand it down a bit until it does. Mine fit fine, but I did cycle it a couple dozen times in the channel before assembling it. - Also verify that the small notch that the spring retainer will lock into (in the door), is free of support material. - To assemble the latch, install the slider in the channel, then put the spring in, and slide the spring retainer into place. The retainer should latch in and stay fixed. - It will be difficult to disassemble it after this, but if you need to get it apart, use a flat screwdriver and try prying against one of the sides of the channel the retainer clip sits in, which may work. * I assembled the hinge with the threaded insert in the end pieces, so the door rotates on the screw (I did not install any threaded inserts in the door). I was thinking though, that it could be done with the inserts in the door and no inserts on the ends. That way the screws would also add to the structure, but it would probably require some locktite on the insert to keep it from unscrewing. If anyone tries this, let me know how it works. After installing a <strong>very</strong> powerful fan in this case, I found that I needed to be able to adjust the fan speed. The fan is really more than I need, but it does move a lot of air so I am keeping it. I made another case to hold a PWM fan controller, a switch and volt meter which you can find here: https://www.thingiverse.com/thing:3343832