Results 1 to 6 of 6
  1. #1
    Senior Member streamline's Avatar
    Join Date
    May 2010
    Location
    Greenville, SC
    Hammock
    diy HH
    Tarp
    10' x 8' diy cat
    Insulation
    Full down UQ
    Suspension
    Whoopies w/ straps
    Posts
    373

    how to figure out outter sheel dimensions on an underquilt?

    I am working on the plans for a new diy underquilt and am wondering how to figure out the outter shell dimensions.

    My inner shell dimensions, not including seam allowance are 43.5 x 52 with 2.5 inches of loft. I am going to make my channels separate and attach before stuffing so those wouldn't come into play. I will have 5 baffles that are 7.5 in wide and running the full length of the quilt and two at 3 inches on either side.

    I just want to cut wider on the outter shell and not longer. This is my first down quilt and I don't want to go crazy with over complicating it if I can help it.

    So what do you say, how do I figure out the outter shell to allow for the 2.5" of loft I want without compression issues but not to loose, loosing the insulation of the down?

  2. #2
    Senior Member streamline's Avatar
    Join Date
    May 2010
    Location
    Greenville, SC
    Hammock
    diy HH
    Tarp
    10' x 8' diy cat
    Insulation
    Full down UQ
    Suspension
    Whoopies w/ straps
    Posts
    373
    Also I forgot to mention that I am using no-see-um between the baffles.

  3. #3
    MAD777's Avatar
    Join Date
    May 2009
    Location
    South Florida
    Hammock
    DIY, WBBB & Switchback
    Tarp
    HG cuben,OES Spinn
    Insulation
    DIY down 3/4 UQ/TQ
    Suspension
    Dynaglide & Dutch
    Posts
    8,571
    Images
    39
    Inside width (43.5") divided by pi (3.14) plus thickness (2.5") all multiplied by pi (3.14). Finally add twice the baffle height (the two outside edges of the quilt are "external" baffles). Then of course, add you seam allowances.

    For your quilt, the outer width should be about 56" depending on your baffle height, plus your seam allowances.
    Mike
    "Life is a Project!"

  4. #4
    Senior Member streamline's Avatar
    Join Date
    May 2010
    Location
    Greenville, SC
    Hammock
    diy HH
    Tarp
    10' x 8' diy cat
    Insulation
    Full down UQ
    Suspension
    Whoopies w/ straps
    Posts
    373
    Thank you!

  5. #5

    Join Date
    Aug 2012
    Location
    Colfax, Ca
    Hammock
    DIY gathered end hammock
    Suspension
    Straps & whoopie
    Posts
    647
    There is a great spreadsheet somewhere here on the forums which I'm using to design my underquilt. You enter the length, width, baffle height, loft height and number of baffles and it tells you everything you need to know including how many ounces of down go into each baffle (it even calculates for different down fills).

    I'll try to track it down and post a link here.

    Found it! It's in this thread

  6. #6
    Senior Member streamline's Avatar
    Join Date
    May 2010
    Location
    Greenville, SC
    Hammock
    diy HH
    Tarp
    10' x 8' diy cat
    Insulation
    Full down UQ
    Suspension
    Whoopies w/ straps
    Posts
    373
    Blast from the past here. Nice resource. Thank you!

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •