Made some Magnetic standoffs for our CO2 Laser Cutter to raise material further off of the bed for better airflow and less backside burning.

Here are links to the parts I used:
Cone Spikes: https://www.amazon.com/gp/product/B07...
M3 8mm Flat Head Socket Cap Screws Countersunk Bolt: https://www.amazon.com/gp/product/B08... (be sure to select 8mm long)
Magnet with a countersunk hole through the center: https://www.amazon.com/gp/product/B08...

I had a local metalworker cut and bend one edge to the metal plate for use as my surface. It's 16 gauge steel.