This my take on a table saw feather board.
It is a combination of two other things I found on Thingiverse with some improvements.
The feather board is originally from mar363636, but I re-drew it in CAD to add rounded corners to the fingers to help reduce stress concentration and give an overall softer feel to the feather board. I also added my logo to the feather board, but the included STL is blank.
The miter slot bars are simlar to evil2002usna's but sized to fit my 3/4" miter slot width and depth and a 5/16" flat head bolt.
The knobs are sized to fit a 5/16" nut.
Press 5/16" nuts into knobs. Use 5/16-2" long bolts to secure miter bars.