https://taperssection.com/index.php?topic=198715.msg2395440#msg2395440If you scroll backwards from the post that I linked, then you can see the numerous posts that eman made as he disassembled his F3. Thank you eman for not only risking your recorder but documenting the process.
I link that specific post though because I also want to try to make an F3 smaller, and if you look at those pics, especially the 3rd, I believe we MIGHT have a method of dremeling/sawing off the legs WITHOUT taking apart the F3. The 3rd pic demonstrates a possible cutting point that I'm hoping will allow the legs to "slide" off. If I'm looking at it correctly, you might have to make the cut in a different place to allow the legs to slide downward.
I'm kicking myself for not picking up a super cheap used F3 in my local market from yet another video guy who tried it and apparently didn't like it (I don't think he knew how to run it).