A1 Filament Payout Stop

Did you ever have spool fall off external spool holder? It happened to me. Luckily I was right there when it happened. Spool was getting low and jumped off. So I decided to adopt something I made for AMS Lite few months ago. The piece for AMS is little more complicated but idea of catching the lip is the same. I printed it in PETG only because I don't have any PLA. I imagine it should work in any material. Difference is only in printing temp. To assemble align pegs of one part with big holes in the other, squeeze until both parts are flush with each other and turn upper part clockwise until both are aligned.