I've used this technique sometime ago, with an minolta srt-101. The lens it came with (55mm f1.8) had the elements screwable by hand, making the mod easy.
[1]https://troialog.tumblr.com/
https://64.media.tumblr.com/c4a110c4bf7013f082e81b3561bf6791...
Stay young.
https://64.media.tumblr.com/c4a110c4bf7013f082e81b3561bf6791...