Couldn't find a 3D print for that little tool to remove 25 mm retaining rings on microscope filters/optics. Made a 3D print for that little tool to remove 25 mm retaining rings. (Photo from prototyping; final version in the link!) www.thingiverse.com/thing:7357709

Hi microscopy friends! I opened up a spinning disk filter wheel today and found that all the filters were set "backwards" (so the arrow points away from the camera). Is there a reason to do this??

FYI 😜