TW-Mini Upgrades

I just recently built a TW-Mini by TezDesign
https://www.thingiverse.com/thing:1060267
simply because I was curious about the XY-Core mechanic.
Though I really like the design, I decided to do da few minor changes:

1) A small clamp - Profilklemme - to hold the wires in the 20x20 profile

2) I remixed the table top part - Halterung_Tisch - to now have a center hole. Now the table can be aligned by only three screws instead of four which is more precise and easyly done

3) the hot-end lo