Heater Bed isolation and glass blocker

I made a leveler, isolation and glass blocker for my heater bed.

for using it, print 4 times the STL.
the square block is for blocking the glass on the heater bed.
the others, for making isolation and prevent thermal dicipation.

for ABS, I start all heater at same time and I start my print after only 2-3 min ( 240° and 75° for the heater bed )

This thing was made with Tinkercad. Edit it online https://tinkercad.com/things/7rihz3s0Kwe