I tried this with mulberry wood. drilled like 25 holes in a disk and put in smoker. Not even enough time to turn the bottom of the disk black much less smoke. Then I let the wood dry for like 8 months and put in the oven at 250 for 2 hours to dry the wood more. Put disk in smoker and now the disk turned black on bottom, but no noticable smoke before being pushed off tray (and yes I pre-heated the tray). Got the idea from someone who posted about using Alder branches and it worked great for him, did not work at all for me.