This is a new Design based on FMMT666 Invader Toilet Holder. I did a complete redesign since i didn't like FMMT666 Handling of the Paper roll. With this design you can quickly exchange the rolls.
Just glue the left and the right Part together. I made groves so they wont move while the glue is hardening. That is all. The Toilet Paper goes onto the Plastic Roll and both into the Holder - done.