Premium Hedgehog Spiral Featherboard modified track bar
thingiverse
This device, https://www.amazon.com/gp/product/B078L82HLT, comes with a bar the slips into the miter slot of a table saw or router table. However, my cheap Harbor Freight table saw does not have the "standard" 3/4" straight-edge slot for the miter guide. This piece fits my table saw and holds the featherboard in place. I printed it at 100% infill in PETG for strength. OpenSCAD source included.
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