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  1. #1
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    Design Tips for a (much belated) Costco UQ

    I have recently moved to a hammock. While a pad is sufficient for the cold, I feel it vastly decreases the comfort which could otherwise be afforded by a hammock. I would like to try out an UQ.

    I will be working with a Costco Down Blanket (found one in my closet which was somehow never turned into a top quilt!).

    After spending some time searching the internet, it seems the Costco quilts have been modified far and wide to varying degrees of effectiveness.

    What is the simplest, warmest, lightest (obviously as a compromise) option out there?

    I am comfortable with sewing but would like to have some framework or tutorial to follow as I am still relatively new.

    So far my best "plan" is to just seam-rip the horizontal baffles and probably sewing a new seam to shorten / better concentrate the down.. once again, looking for greatest return on work!

    Any tips / tutorials / suggestions would be much appreciated!

  2. #2
    Senior Member Rusty Shackelford's Avatar
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    The Gemini is prolly the most well known version and the guide can be found here.

  3. #3
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    Warning: a single blanket by itself isn't good for much as an underquilt. Two together do very well, but i would only use a single layer concept indoors or on warm summer outings.

  4. #4
    New Member
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    Not exactly OP but I agree that one Costco throw is not much protection for an underquilt. That said, and I don't use a Costco underquilt but I do use one as a summer top quilt. I recently modified my UQP to include a layer of 2.5 Apex Climashield insulation which could improve your underquilt's rating. The UQP will also add more comfort on it's own by helping to stop wind form stealing your warmth. Just an idea.

  5. #5
    Crazytown3's Avatar
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    Agree with the Gemini plans. They are great used in a double layer UQ. I use a single layer Gemini as a second layer to help boost my 2-season synthetic UQ.

  6. #6

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    +1 for Gemini design. I sleep warm, but have used the single layer UQ into the mid 40s wearing heavier mid weight layers. The double layer is toasty for me down to low 30s.

  7. #7
    Senior Member P-Dub's Avatar
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    Here's the link to the Gemini

  8. #8
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    Hmm. I see how this could be a problem. I could check to see if Costco is still carrying the blankets to get a second.
    Are there any other decent budget alternatives for an UQ? It would probably be most used in summer / down to around 40.

    EDIT:
    I'm also curious if it would be worth modifying the Gemini design by seam ripping and / or shortening the blanket to help free up some of the trapped insulation? I have seen this suggested on several other designs.

  9. #9
    cmoulder's Avatar
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    Maybe get a HammockGear Phoenix Econ 40. $110 and done!
    Five Basic Principles of Going Lighter (not me... the great Cam Honan of OZ) Instagram (me!)

    To equip a pedestrian with shelter, bedding, utensils, food, and other necessities, in a pack so light and small that he can carry it without overstrain, is really a fine art. ~ Horace Kephart, 1906

  10. #10
    New Member
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    Hello!

    I am super super happy with my Costco Underquilt and I've taken it down to about 38 degrees with a Costco topquilt (though I will admit that was definitely the lower limit of the setup and I was wearing my rain jacket, a fleece half-zip and two wool buffs -- one around my neck and one as a hat).

    I did the faux baffles that you can see here: https://www.hammockforums.net/forum/...h-Faux-Baffles and then I used some medium-fine elastic (thinner than shock cord) to weave a "clew" suspension as seen here: https://theultimatehang.com/2013/01/...clew-tutorial/

    I don't think I cut away any of the quilt fabric before I sewed the baffles as the photo shows in the Faux-baffles link I shared. I believe what I did was to sew the faux baffles along the longer side, so that my finished underquilt had a length of 60" and a width of probably about 58 inches (the original 70 inches of the quilt was reduced by probably about 12-ish inches when I sewed the faux baffles). If you search "Costco faux baffles" on Youtube you'll get some videos that should help, including this: https://www.youtube.com/watch?v=uDOvilRZtgA

    My underquilt has been in use for three years and it has held up GREAT. I love the fancy suspension!
    My whole setup is hand-sewn by me: 1.1 oz. ripstop nylon hammock, bugnet, "Costco" top quilt & underquilt with woven clew suspension; MEMBRANE silpoly hex tarp with Dutchware ridgeline & tato connectors; paired with MSR mini ground hog stakes and Hummingbird suspension & tree straps. TOTAL WEIGHT: 3 lbs., 14 oz.

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