I followed the thread on using rough lumber to build supers with interest hoping the dimensions would be mentioned, but it didn't happen. I plan on building 25-30 deep supers and would like to know standard dimensions. Is there a reference document applicable to NA that I could pursue at the local library? Also I'm wondering about the use of mortise versus simple lap joints. If anybody on the list could offer some suggestions in this regard I would appreciate it. Thanks, Doug Henry Lockport Manitoba