For plug spawn, you’ll need a drill with a 5/16” (8mm) bit to make holes in the log, a hammer to drive the plugs into the holes and wax to seal the holes. If you are inoculating several logs, you may find that an angle grinder adapter with an 8.5mm drill bit will help the work to go more quickly.
For sawdust spawn, we recommend a drill with a 7/16” (12mm) drill bit and an inoculation tool to pack the sawdust into the holes. If you are inoculating several logs, you may find that an angle grinder adapter with an 12mm drill bit will help the work to go more quickly. You can insert sawdust into the holes by hand but an inoculation tool greatly speeds up the process and allows the sawdust to be packed more densely increasing the success of log inoculations.
All of the holes need to be sealed with hot wax (cheese wax, food grade paraffin wax, beeswax etc…) to prevent them from drying out and to seal them off from contamination.