I'm working with a team of woodworkers in Haiti who are learning to make bee equipment for my apiary and eventually for mass production and sale. The frames have proven to be the most difficult, due to limited equipment. I have 2 questions:

1: Can someone give me a link for some good schematics for foundationless frames that don't require too much routing and jointing? (Preferably Narrow Frames--1 1/4 inch)

2: How important is it for the side bars to be notched or tapered from top to bottom? Can I just make them straight or will that cause real traffic problems in the hive?