AA Battery adjustable holder

Most of the battery holder posted are set to connect the batteries in parallel. The number of batteries held also varies with the postings. I need to connect my batteries in series and I needed a 6 battery holder. There are many nice battery holder posting but I had another problem. I have a FLASHFORGE Finder which does not have a heated bed. Buy printing one holder at a time warpage was not a problem. When using bed glue more times than not a 4 x AA holder would pop up at a corner and distort the holder. I solved my problems by adding lock and key features to the holder. This way you can snap as many holder together as needed. The holder can also be arranged to more directly wire the batteries for a serial or parallel hook up. The lock and key feature allows one to connect an infinite number of AA batteries. The design was a modification of the battery holder deign Flexing Battery Holders with Integrated Spring by Heliox.