Plugging with sawdust spawn: Again, drilling and plugging are the most time- and labor-intensive part of the process. My first couple of projects, I stuffed the sawdust spawn into the holes with my fingers—be glad you’re a lot smarter than that! Buy what Mark Jones terms a “palm inoculation tool” to make this chore easier and faster. (See the resource page for a source.) Jab the barrel of the tool a couple of times into a container of sawdust spawn, then position it over the hole to be plugged and drive in the compressed plug of spawn by smacking the knob atop the plunger. The spring-loaded plunger returns to the starting position when released.