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Compression sack
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Eric Parsons
(EricP) - F

Locale: Alaska
Compression sack on 03/20/2007 00:00:39 MDT Print View

Pretty simple, cut the weight of my old OR in third. Two buckles are ladderlocks and the other two are side release so you can pop the top off with out having to release any straps.
Fun quick little project. 20 degree down bag inside the photos.bigcompressed

Andy Goodell
(geekguyandy) - F

Locale: New York State
Re: Compression sack on 03/20/2007 08:57:23 MDT Print View

How did you sew the straps on? It looks like it might be just two bars of stitching? I want to make a compressor, but didn't know the best way to attach them to thin material. I normally compress things as much as they go, so it would have to hold well.

Eric Parsons
(EricP) - F

Locale: Alaska
Yeah on 03/20/2007 11:01:43 MDT Print View

I just used 2 bar tacks, hopefully they will hold. The real stress point seems to be where the gusset taper part meets the lid, it pulls really hard there.

Originally wanted to do one out of all Sil Nylon, but opted for dyneema for the lid. Maybe I'll try another using all sil nylon but running some grossgrain as reinforcement along the lins of the straps.

Pretty amazing the force you can generate by cinching down on the straps of these things.

todd h
(funnymoney) - MLife

Locale: SE
Well done! on 03/20/2007 12:51:31 MDT Print View

Nice job, Eric! Very professional.

Sam Haraldson
(sharalds) - MLife

Locale: Gallatin Range
Compression sack on 03/20/2007 13:50:36 MDT Print View

When sewing tie-outs onto lightweight fabrics it might be wise to use the "X Box" stitch rather than bar tacks. Bar tacks by their nature puncture a bunch of holes into the fabric very closely spaced which can weaken the fabric. These are just my two cents in regards to that. The project you've completed looks great however!