On Wednesday, May 8, 2019 at 9:36:49 PM UTC-7, Gramps' shop wrote:
I came into three 8/4 walnut slabs today. Moisture meter reads 30%. How long can i expect it to take to get,to 10% or so if I stick stack them outdoors? I am going to see if there is a local kiln service, but I suspect they may want more than the $1.50/bf I paid for this. Like to work these before I forget why I bought them 😜

It depends on the environment in which they are stored/stickered. If outside, to what environment will they be subject? To what temps and humidity will they be subject? You omitted those details.