I made this wood burnisher on my metal lathe because I was bored of using the handle of my other tools as a burnishing tool. This might be the starting point
One-Pager List: Tools Needed for Leathercraft
Armitage Leather Hand Slicker
How to Burnish Leather
Stainless Steel Burnishing Tool, Surface Profile Tool
Two Cherries Round Burnisher
Leather Polishing Burnishing Machine Leather Edge Grinding Machine – WUTA LEATHER
Tired of relying on a ruler and steady hand to cut/carve straight lines and borders? This tool makes it all so easy with just a few adjustments. Insert and tighten your favorite swivel knife blade in place, adjust the guide to the desired width and you are ready to use. Tool will adjust from 1/8 (3 mm) to 1-1/2 (38 mm). Swivel knife blade not included.
Craftool Hand Border Tool from Tandy Leather
Compatible Withwooden Leather Burnisher Tool For Burnishing Of Various Leather
Solid Wood Leather Craft Edge Slicker Burnishing Burnisher - Temu