Nutgrafting has become an especially popular form of chestnut cloning. It is a cheap method of vegetative propagation, but much care must be taken in nursing the grafts once made. The following are some of the most popular links on nutgrafting information:

Information from the American Chestnut Cooperators Foundation:
http://www.accf-online.org/chestnut/nutgrafting.htm

YouTube video of Carl Mayfield nutgrafting clinic from 2007:
https://youtu.be/NpAcoSbkSBo

Carl Mayfield's guide to nutgrafting:
http://www.mdtacf.org/grafting.shtml

Joe Schibig's guide to nutgrafting:
https://www.yumpu.com/en/document/read/8966885/nut-grafting-volunteer-state-community-college