Hot airgun 8018LCD buttons, cap, wire holder

Hot airgun 8018LCD is great and cheap, but it has no temperature stabilization

Here the solution (on atmega8)
http://radiokot.ru/forum/viewtopic.php?f=25&t=8505&hilit=ne555&start=8880

But empty holes for buttons is not good and I made some custom buttons :)

Also cable holder was broken when assembly/disassembly costruction :)
Cap also was printed.

It connnected to my Hakko T12 AT power supply
https://www.thingiverse.com/thing:1661703
updated version:
http://s2.micp.ru/ulU4t.jpg