BLV MGN Cube - Ender 3 Hotend Adapter Plate [WIP]

thingiverse

After building my BLV MGN cube, I noticed that part cooling was never up to par. I tried others' cooling solutions, but they couldn't be adjusted to the perfect level, so I wasn't successful with part cooling. I decided to design my own fan duct in Fusion360, but it turned out I didn't know how to do that. So, I looked elsewhere. Since I have an Ender 3, which was my first personal 3D printer, I was already familiar with different part cooling setups for that printer. Many of those are adjustable, so I figured I might be able to achieve good cooling that way. I modified the BLV MGN Cube X-carriage hotend mounting plate to have the same holes and dimensions as an Ender 3 setup. I mounted the E3D V6 version of the Hero Me for dual 5015 blower fans, which is probably overkill, but it looks promising so far. I've also been able to fit a BL Touch on it. I needed to adjust the location of my printer bed due to the offset of the nozzle. Since I've been upgrading the heated bed as well, this wasn't really an issue for me. However, I kind of want to try the Petsfang duct setup though, since I don't think the adjustment would need to be made. You shouldn't need any different hardware to mount it, as it uses the same holes and screws as the rest of the BLV MGN Cube X-carriage. It's basically just a replacement front plate. I've left areas for nuts to fit into the plate behind the holes for better mounting. This is a work in progress, as I've been too busy caught up in other things to find time to work on this or my printer. I've uploaded this at the request of someone else. I've included the STEP files to make modification easy. To print it, I printed it flat against the back so the hexagonal cutouts for nuts are facing the bed. The only place support is needed is for the edge off one side if you're using the custom supports version. The custom supports version just has a 0.2mm sacrificial layer so the printer can bridge for the entire top of the hole resulting in easier to remove support from the holes and less filament used. For one ledge that needs support, I just played with the overhang angle so that the holes were bridged and not supported. There's probably a better way of doing this, like with support blockers or something, but I was lazy when printing and this worked out just fine. I am aware that I could probably change the design to make it easier to print without support, but I wanted the form of the plate to resemble that of the regular one. My's printed in PLA right now because I was prototyping and testing. I would probably try it in PETG once I'm confident that it works. So far, 0.2mm layer heights have worked fine for me. Otherwise, just print it how you would print the X-carriage front plate.