Hotbed Spacers

These spacers apply more tension (3mm raise)to the bedsprings for levelling the hotbed.
When my bed was levelled the turning knobs where to loose (they almost fell off) so the smallest vibration could change my bedlevel.

NOTE: for the spring in the left rear corner, where the connector is, use BedVeerVerhoging2.
It doesn't has the higher edge on it.