BTT Manta M5P Enclosure/Mount

When I set out to find a replacement for the stock board for my Ender 5 Plus to run Klipper, I ended up deciding that the Big Tree Tech Manta M5P with their CB1 RPi replacement was the most cost effective and had the right features. Unfortunately, it was very new and there were hardly any enclosures or cases available to actually mount and use it- so I set out to design one of my own in Fusion360. I used the 3D model of the M5P that speedysk1 posted here (https://www.printables.com/model/390639-bigtreetech-manta-m5p-model) as the basis and built up the case around it.

This version (V1.6) is the first usable version (you can see the picture of some of the earlier failed ones, which had problems like not accounting for the height of the heat sinks), though it does have some definite issues that need to be addressed. This version allows access to all of the ports on the board (though better access for the heater/primary power bank is one thing I need to address in the next revision), though I plan to make version that close off the access to some of them that may not be needed (I for example only really need the USB ports on the left side and the HDMI on the right- though if I can figure out how to use the HDMI on the left it would be better). The enclosure is built to use an 80mm fan to cool the board- I used this fan guard to cover the fan: https://www.printables.com/model/391078-80mm-fan-guard.

You will need 8 M3 heat-set inserts for the case- I used M3x6x5mm inserts from this assortment (https://a.co/d/bPDtQPE). I may for future cases not use the inserts and just screw into the plastic, but I figured with opening and closing it things would be better with the inserts. In total, the hardware needed in addition to printed parts are:

• 8x M3 inserts
• 8x 6mm M3 bolts (4x for the board, 4x for the cover)
• 4x 20mm M3 bolts (fan mount- will need longer if you use a thicker fan)
• 4x-12x M3 washers (depending on whether you want to use them or not)
• 4x M3 nuts (fan mount)
• 2-3x 8mm-10mm M3 bolts (for mounting enclosure to extrusions)
• 2-3x M3 T-slot nuts for the size of extrusion your printer uses (2020 for my Ender 5+)
• 80mm fan (I used a 10mm thick one- https://a.co/d/0LoDh5d)

There are 4 holes for mounting the enclosure to the extrusion to mount it on any corner or side that you want.

Changes/improvements I plan to make in future revisions:

• Larger hole for the wiring- I used a slightly larger hole than the stock electronics enclosure on the E5+ but found that it's pretty tight and routed some wires in through the side, so a larger hole- and one that wasn't fully enclosed (i.e., would be similar to the other openings where the hole is ‘closed’ by part of the lid)- to make wiring easier is in order
• Widen enclosure to make more space for the heater/VIN wiring connections
• Increase thickness of bosses under holes to mount to enclosure to increase strength
• Add grooves/guides to help keep the top aligned when installing it
• Potentially change how the enclosure mounts from holes through the bottom to ‘ears’ on the sides so it can be mounted and un-mounted without opening the enclosure

The case/enclosure can be printed without any supports in pretty much any solid material (i.e., I don't think you want to print it with TPU…). I used a fairly course layer height (either .2 or .24) since this was my initial test print, so it works well enough at those thicknesses but will of course do well at finer layer heights too.

Note: the enclosure wasn't designed to be printed in two colors the way that I did- ironically the fact that the cover and bottom are teal and the center portion gray was the result of my running out of both colors at different points in the prints and swapping in the other color, but it did turn out looking nice that way.