Bill and Paul; Thanks,
RE: Quest -- i had a senior moment. Yeah, they're good.
I think what happens is a mill gets an order for a certain fabric spec, then orders yarn from another mill. So, for example, they want what we call 1.1. Most mills call it .75 for reasons obscure and occult. The yarn may be 30 denier and it may be nylon 66, but it may vary in specifics enough to change the weight of the finished product. So, lets say they order 30 denier yarn which in their experience will get within the ballpark of the target weight with their equipment and settings. They run it, ship it, and let the buyer decide whether to hassel with a contract suit. The buyer uses what they need for their run and remainders the unused portion to jobbers who downstream it to retailers we buy from. Sometimes this stuff sits in a warehouse until the polyurethane turns to syrup before it gets remaindered. Through the 70's you could get true .75 coated ripstop that had been made for lifeboat sails during WWII. Good stuff. Totally unavailable today. Probably would be rotten by now.
Anyway, the only way to get exactly what you want is to do what the big boys do and contract for a specific fabric within specific parameters. If the mill misses the target, the mill remainders it to us little guys. But the big manufacturer gets what he ordered maybe eventually. Manufacturers tell me that finding a good mill is a big hassel.
I figure the only way we can get weights that are advertised is if the retailers will make the effort to test their stock. Otherwise, I guess they are guessing.