Bearing block for table remixed

I really liked the idea behind Good Idea's bearing blocks (thingiverse.com/thing:1438544) but I wanted to change a few things.

The first thing I changed was to make the attachment holes a bit smaller as they seemed too big.

I also inset a nut trap to better fit locking nuts.

BOM:
3 - M3x16 screws
3 - M3 lock nuts
3 - 623zz bearings***

Just make sure to buy decent bearings, if you don't the blocks will make annoying sounds and won't ride smoothly on the rails.

I'll upload pictures when I get a chance