^ This! That's exactly why I'm looking for the info. It would make it a lot easier to scale rockets properly if the wraps could be scaled to a specific width as opposed to by a % of original size.
Really! What wraps are you talking about... You can't possibly be talking about those NEVER accurate fin alignment wraps. the only body wrap that might be worth having exact od circumference would be those with corrugation such as the little Joe-II, Saturn-1B or Saturn-V or perhap the Orion.
That said I've build all of them from the ID and OD of the Craft body tubes. All that's needed is the od of the tube and thickness of the material being used as the base wrap x Pi.
I usually add an additional 1/16" to 1/8" as an overlap Just in Case. It really is that simple.
Shoot! even the maunfacturer's allow an overage to allow for excessive glue, etc.
All this talk about circumferences...don't you think if such a schedule were needed or important it would have been made sometime during the past 50+ years?
I don't know of a single Up or Down-Scaler that use % as the basis for their scaling work. Hope this helps a little anyway.
OBTW: Most of the Micro Maxx body tubes are also manufacturered by the same company that makes tube for ESTES. They are all .013" wall tubes with white glassine. T2 = .220" ID - .246" OD. (Makes great Motor Stops & couplings). T2+ = .255" ID, .281"OD. Minimum Diameter motor tube. T2++ = .292" ID, .318" OD, (a Telescoping tube). T3 = .346" ID - .375" OD (a Great Outer Airframe size). T4 = .422" ID, .448" OD, (for larger body models, and of course T5 = BT-5 = .518"ID, .544" OD.
These tubes were originally available only from Totally Tubular, Unfortunately they have sold there stock to E-Hobbies, Balsa Machine Service and others. Used to get quantity discounts on tube, but haven't had to buy in the last several years. Personally I don't stock many of the Old Centuri, Quest or Simroc tubes as they are off size for the standard .013 and .021" wall ESTES tubes.