: Hey Guys, Just thought I would help clear up some confusion on duck
: cloth/ cotton canvas weights. The wikipedia shows an outdated
: measuring system. Most of the weights on there aren't
: manufactured anymore. First there is a significant difference
: between " Ounce Ducks" and "Numbered Ducks".

: Ounce ducks as the name suggests, are categorized by their
: approximate weight in oz. per square yard. (7oz 10oz 12oz.)
: Ounce Ducks are a single fill. Meaning, it's weaved using two
: single yarns. Single fill (SF) ducks have a looser weave and are
: more flexible in nature.

: Numbered ducks on the other hand are referred to by the strange
: numbering system that probably made sense at one. Numbered Ducks
: are "Double Filled" or "Plied Yarn".
: Meaning, they are weaved with 2 double strand yarns. This makes
: for a much tighter weave, making the canvas much
: stiffer,stronger and durable. Weights of numbered ducks sold in
: the USA can vary but are approximately: #1 (30oz), #4 (24oz), #6
: (21oz), #8 (18oz), #10 (15oz), #12 (11.5 oz)
: http://www.bigduckcanvas.com/categories/numbered-ducks

: I hope I've cleared that up for someone. We recently had a customer
: buy 100 yards of canvas for making kayaks as a boyscout project,
: he asked for 10oz but what he really needed was #10 and he
: realized his blunder once its arrived. That's when i began
: reading up on this topic. He sent us some plans to build so I
: think i might do this with my boys.

: Best regards,
: Shawn

: Thanks Shawn, after looking at your link, I'm gonna go with the # 10, a thick coating oughta give it some abrasion resistance too, Kevin