Our Ultimaker 3 and S3 tend to drop their front fan-cover midprint and this ruins the hole job.
But!! We have a 3D printer, so i say away with thee ductape and welcome to a 3D printed clamp! :)
I designed it to fit mainly the UM 3 (Not suuuper tight) but it also work on a UM S3 (On the tighter side).
Just snap it on and the front fan cover will not longer be able to drop. It is now a standard part on our printer-farm
UM3_Clamp.stl | 41.6KB |