For much faster and better results with Tokonole, mix 2 parts with 3 parts water in an acrylic empty marker 👌. Pic is ONE pass after sanding and covered with edge dye.
Amazon.com: Break Leather Art Leather Edge Shallow Groove Creaser(Sandalwood 2.5mm), Stainless Steel,Crimping Work Tool, Leather Edge Marker, Suitable for DIY Leather Craft for Beginners and Professionals
Edge Line Marker | pmakstools.com
Dyeing Leather Edges with the Edge Dye Applicator - YouTube