Waxing

From Toadwater Guide

Certain items in Toadwater can be waxed to further increase their power e.g: A normal grade 10 shovel digs 10mm deep per click, if you would wax it now with grade 7 sap it digs 17mm deep per click.

You need 100 units of sap in order to wax something. Sap can be gained by attaching a tap onto a tree. The higher the rank of the tree the more time it takes until you can collect the sap. Also the higher the grade of the tap the more sap it drains from the tree.

See also: Wax workshop