I downloaded the Sienci motor covers and printed them out. These are great protection for the motors and the motor wiring that is exposed. I put the covers on but immediately noticed the covers seemed spongy when tightening down the 2 screws that hold the covers on. After removing a cover for examination it was obvious that the screws needed some support under the cover where they sit on the motor frame. I took a look at the 3D print file and decided to add pedestal extensions to the covers so the cover screws could be snugged up without having any spongy or wobbly cover movement.
As provided, the covers rely on their side ribs to keep the cover centered on the motor. By adding these pedestal extensions to the covers it provides a more solid mount for the cover as well as head room for the wiring to keep it from being compressed by the cover when snugging up the screws.
It takes about 3 hours at 50% print infill to print each cover. I have attached my 3D file for anyone who wants to give it a try.
I can appreciate what you’re saying about adding an inner support post to ensure the covers bear against the screw mount. Notwithstanding, I had a friend make me a set using Sienci Labs’ file and they fit just fine and I was able to tighten them down firmly.
Now, I have absolutely zero 3D printing experience, but I’m wondering it the plastic you used was “weak” and allowed too much flexing? Just a thought…
The printing filament is very good Hatchbox PETG so the print strength was fine…the problem was snugging down the 2 screws…as you do so the motor cover is pulled down on the cover side ribs and there is quite a gap under the screws where the cover does not contact the motor case. I personally prefer all four screws being snugged down to hold the motor electronics in place not two screws snugged and the other two kinda snug. The covers as supplied did not allow this…that is why I added the extensions in. The other problem was the motor wiring that was smashed down if the 2 screws were tightened to much…the cover extensions will prevent this from happening by providing sufficient head room between the cover and the wiring when the screws are tightened. These things are easy to see by looking through the venting on the back of the cover.
At any rate it is up to the user to decide for himself if the assembly is adequate as provided…for me, I wanted a more firmly mounted assembly on the motor electronics.
