Heatbed Mount for round Heatbeds

I designed this mount for the round heatbed of my delta printer (picture attached). It can be easily adjusted in height. Also it is able to avoid nozzle crashes using a spring as bumper.

I am using so called "drive-in nuts" (see picture) on the backside of my bottom board to fix the heatbed-mount. But of coursse there are lots of alternatives to do this... its up to you. hope it helps