these are great tips. hopefully new owners will find this forum before they start. I didn’t find it till several weeks into my build.
I thought I had aligned #3 and #4 panels until I prepared to cut the doors out. one side was perfect; the other side was off about 1/4″. it will be OK, but there will be a bigger gap than desired between the door and frame. someone on this forum said “if you want to build furniture, build furniture”. a good reminder for us anal-retentives.
thanks to Stevie for the advice on making smooth fillets. just in time to make “pretty” fillets on the door hinges.