Ron from MLD here.
I wanted to share some cuben info.
Note that this is the first time we have pubilically stated the exact style of Cuben we use.
The CT1K.08 is the stuff we call .45 and is the type for the one MLD Speed Tarp. Can be torn by hand by most people without a starter edge cut. We've ruined tarps by pulling them over a catchy corner edge of work tables. We do not guarantee the fabic on this one tarp. A very few other companies have offered this lighter weight style in the past and they did not guarantee that style cuben either - almost all companies most stopped making commercial tarps from that weight. It is quite thin and sewing is a challenge - plan on taping and using a bit larger than normal reinforcements and hems. DYi'ers without heavier Cuben styles on hand to build the reinforcements from should consider using taped reinforcements of slightly different sizes on both sides. Sometimes we spot areas - since we cut all our own in house- based on years of experience - that are not layed up evenly and need to be discarded. The thiner the style, the harder to manufacture evenly.
All the rest of the MLD Cuben tarps and shelters are from the much much stronger CT2K.08 that we call the .6 Really bomber stuff. Can not be torn by hand. -And I'm pretty strong. Small rips are very hard to enlarge by hand. So any puncture will stay very small.
Every once and while we have to discard some rough sections- but overall pretty uniform layups.
We know the actual weights per style are now a bit higher than years ago when we first started using Cuben and those weights can vary a bit from run to run like any fabric anyway. We keep calling it .45 and .6 to try to keep some comparrision and reference continuity.
The final weights in the individual style/size tarps over the years have changed less than an ounce anyway. We hope the .45 and .6 reference help folks judge strength between our products year to year vs. posting lots of small changes and getting lots of different numbers all swirling around.
We do not know exactly what style the .33 or .45 references seen around the web refer too but it's got to be very very thin.
On BPL forums, Cuben gets a pretty solid reputation and through discussion, but in a lot of other places it has a shaky reputation. We feel that is mainly due to misperceptions created when the word Cuben is used to reference any sand all styles and weights. Since a lot of that is based on the very lightest styles and experimental construction methods, it's not a surprise.
• CT2K.08 is very strong. (98% of our tarps/shelters)
Frrancis Tapon used this for his CDT Yo Yo and that's a lot of nights.
• CT1K.08 smaller tarps can be used carefully in moderate winds if constructed very well (used only in the one MLD Speed Tarp) -Costs a couple bucks less p/yd than C2K.08 but you may end up needing more seam sealer weight for strength Vs with the CN2K.08 too.
• Even lighter styles are super interesting...but very very very thin. DYI'ers have fun and be creative! A whole lot of good ideas do come from you.
•There is a reason if a cuben product's fabric (not just the workmanship) is not covered by a full warranty. Our .6 / CT2K.08 is fully covered. Our .45 style is not.