26.9.2018 UPDATE: I added iert with wider neck to easier usb cable manipulation - works better. I used thin fabric "velvet" (or similar) and glued around whole print. This made it exact diameter to fit to armrest just perfect! I hope it will help you guys! Enjoy! I decided to make deep and very useless armrest of Astra K a bit more practical. I designed shelf which fit from top and hold by its shape. You still can use bottom part of armrest for not so often used thingies. It has an hole for USB cable and iert which prevents USB cable to slide back down. Compartments are designed as per my needs. Small gas station WC vouche USB stick Glasses cloth Coi compartment(s) Univeal compartment !!! Size is OK, but slip down from top edge of the armrest about 0.5 - 1 cm. To make better fit you can try to very slightly resize or do as I am planning - glue outside part of the shelf with thin soft cloth - prevent scratchesoft in and out and perfect fit. I am also planning to use Aceton vapor to make it smooth - hope it will not mess 7 h of print :)