Kiln Dried Large Wood Chunks, Actually dried or Case Hardened? 

We are going to talk a little bit about the differences of wood being fully kiln dried and being case hardened. Hopefully this will help you make good decisions on wood stock purchases, and uses. Hopefully you this will also help you understand what will potentially happen in the future to projects that you created with case hardened wood as well.
To help better understand, and choose the best wood for your uses, you may want to check look at getting a decent moisture meter too. Below are a few good options.
Orion® 950 Pinless Wood Moisture Meter | Backlit Screen, Non-Destructive, Drywall, Lumber Moisture Tester: amzn.to/4aZr8GS (Amazon Affiliate Link)
Moisture Meter Mini-Ligno S/D Black: amzn.to/3VyDIIQ (Amazon Affiliate Link)
Calculated Industries 7440 AccuMASTER XT Digital Moisture Meter: amzn.to/3Xg7vr4 (Amazon Affiliate Link)
General Tools MMD4E Digital Moisture Meter, Water Leak Detector, Moisture Tester, Pin Type, Backlit LCD Display With Audible and Visual High-Medium-Low Moisture Content Alerts, Grays: amzn.to/4ehfj1Q (Amazon Affiliate Link)