<p>This may be a stretch, but I assumed someone in a photo community forum may have some experience with slides for a slide projector. I have these Pako/Pakon plastic slides and they won't stay closed. They look like they would snap together but they don't stay shut. Does anyone know the trick to this? I was thinking maybe the knobs need to be crushed once closed so it doesn't open up. If that's the case, what is the best way to do this? Many thanks. </p>
<p><img src="http://i.ebayimg.com/images/g/N2wAAOSwwbdWQSGx/s-l1600.jpg" alt="" /></p>
