The comments told me that it would sometimes break the SD cards, so I printed at 102%. Now the cards are a little loose, but I put some foam in the cap and now you don't hear them rattle anymore. Also the cap is 'higher' then the base, so my friends would naturally open it upside down making all the sd cards fall out. I put 'TOP' on the cap with a big marker and now that issue is also solved. Thanks for this design!