Technology/ Device to Extract Sap of Guggul Trees

Guggul is a spiny shrub/ short trees which are grown for its medicinal/ commercial values. The gummy resin is extracted from the tree using a special technique. The angle and depth of cut plays a very important role in this process. Any variations in these parameters can damage the tree permanently.
A device is required that can give the appropriate depth and angle of cut so that the extraction of resin can be made easier.