Case for Anet A8 mainboard and 2 mosfet boards

thingiverse

This is designed to be a compact housing for the Anet A8 mainboard and two commonly available mosfet boards (60mm x 50mm PCB) with heatsinks. I discovered a model of an A8 frame, but realized this design won't fit at stock, so I created a frame to relocate the mounting position as shown in my render. This should provide enough clearance between the case and the printer frame. I will have to redesign this later to remove the need for that part since it was one of my first models for printer parts. Although I like the appearance of the design, it's only a proper solution with the relocation frame added. I've now uploaded plain versions of the case and lid to make any remixes people may want to create much easier. I won't be printing this model as I mount my electronics outside of my enclosure. Additions: User Cu3ball decided to create a cover for their cables and use this as an external box for the boards. You can see the cover they designed to hide the cables here - https://www.thingiverse.com/thing:2437476 How I Designed This Tweaks - 15/09/2017 Added separate files for the board mounting posts for the Anet board and for the mosfet boards in case people want to use them in their designs. Tweaks - 28/06/2017 Case_Design_Lid_4 - Removed mounting holes for second 40mm fan and added a large hole to cut down on material use, reduce restriction of airflow and provide access to run the fan power cable. Fan_Cover_Lid_4 - Changed size of hexagonal holes to be consistent with the lid and case, added routing channels for power/signal cable. Update - 28/06/2017 Added another lid variant. This includes repositioned holes for the new 80mm fan cover. The STL for this is "Case_Design_Lid_4". Added an optional 80mm fan cover for use with "Case_Design_Lid_4". File name is "Fan_Cover_Lid_4". The lid fit on the case remains unchanged, but the fan cover should be considered untested. The pegs to connect to the fan in particular could prove to be fragile or too thin to print. It does look like it's sufficiently wide to print in the test slicing I've done in S3D. Update - 25/06/2017 Added a variant of the box lid which includes holes to mount an 80mm fan and/or a Raspberry Pi 3 on the exterior of the lid. If you want this version, download Case_Design_Lid_3.stl. All of the features of Lid_2 remain in this design. Tweak - 25/06/2017 Minor adjustment to honeycomb spacing. Slicing software was showing a small gap when printing with two perimeter shells. Please ensure that you have a relatively low minimum infill distance to get a better surface strength and finish. Updates - 25/06/2017 Conversion of honeycomb holes to a distance of 0.8mm apart. I hope this will allow for a cleaner print of the honeycomb on a 0.4mm nozzle. Raised exit holes in the sides to be in line with the top of a PCB! Repositioned mainboard position to increase distance from X carriage and mount board closer to edge of case. Intent is to have motherboard line up with the pair of square holes for access to USB and microSD ports. Removal of one hole in the top side to replace with the square holes mentioned above. Removal of diamond shaped holes in sides. Current versions are now four: Case_Design_Lid_4, Fan_Cover_Lid_4, Case_Design_Lid_3, and Case_Design_Lid_2. The mosfet positions are adjacent to the side of the board rather than the bottom or top to (hopefully) assist with cable routing. The case lid is designed to be used with countersunk head screws (M3 screws for the sides of the case). Positions are included to attach a 40mm fan inside the enclosure above the mainboard. I intend to make a bracket for the second 40mm fan position to allow a fan to be mounted outside of the enclosure to ventilate the mosfet boards. Currently, there is not enough vertical clearance inside the case above the mosfet board heatsinks (hence the need for the bracket). I plan to add some holes in the bottom of the case between the board mounting points to allow thin cable ties to be used to manage cables inside the enclosure. There are small pieces of support in the larger openings which are intended to be cut away after printing.