Satsana Mizar S Fan Duct
Description
V1 Is a prototype - spent several hours slowly chopping away at the original Satsana model for the Ender 3. The original design doesn't even remotely fit the Mizar S, so a lot of work went into trying to move parts around and adding the mounts I reverse-engineered from the original hotend cover which I used in another design posted here. I haven't printed this yet as I am in the middle of a half-day-long print, but I will print this ASAP and upload an image of the final result. Great efforts have been made to retain the functionality of the original design while trying to shoehorn the thing to fit around the oddball layout of the Mizar S. According to my previous (functional and tested) designed replacement part, this should manage to mount onto the printer without much fuss. That said, there are still a few unknowns at the moment due to having not been able to physically test it yet (a 3D scan and an existing set of models will only get you so far). Here are some concerns that are yet to be verified if problematic or not: 1: LED could be in the way of the duct. I suspect it should be possible to just bend the little light to move it out of the way of the left duct, but it could also potentially require a solder job (luckily it's only 4 leads). I'd like to design this to avoid as much of that as possible though. 2: I have aimed to get the ducts as low as possible without being lower than the tip of the nozzle - a test fit would need to be done to verify that I haven't set them too low. 3: I'm not 100% sure that the right-side blower fan wire will have the extra length on the cable to reach the socket from the new mounting position, and the same goes for the front fan. You may need to solder longer wires (which is very simple), or replace your fans with ones with longer cables. 4: I have not yet gotten to see if this successfully improves cooling performance - minimal changes have been made to specifically the left-side duct as it was physically too close to where the PCB is. I made every effort I could to minimize that and to make changes in the walls gradual to try to avoid impeding airflow. 5: I've not yet gotten to see how well airflow is preserved on the front fan - I had to adjust the opening / air guide to pull the fan further away from the hotend in order to make room for the original blower mounting arm to the right (since I want this to be an easy-to-undo mod with no damage / modification to the original printer hardware). It should have been small enough of a change that it won't hurt it, but never know until it's tried out. 6: This last one isn't a functional concern, rather just an apology - the geometry of this is a bit gross. It's a first revision and while I'm comfortable with blender, my edits weren't very clean. If you go to modify this, you'll find it perfectly usable but not pretty to look at, hahah.
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