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Type: Posts; User: Albert Skye

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  1. Replies
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    You obviously have some good people on the board....

    You obviously have some good people on the board. ;)



    It's certainly breathable through the needle holes; otherwise, I think it is no more breathable than other PE foam sheet. In any case, one...
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    another alternative

    Assuming a construction with two layers of foam, each layer can be made either with pleats or quilt-like seams with the objective of orienting the two layers such that the rough sides are facing each...
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    I used a small piece (one of the diamonds cut to...

    I used a small piece (one of the diamonds cut to remove stitching and scrim) but I did not see any water leakage. As it appears to me, it is essentially impermeable, and it behaved as the several...
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    http://www.neropes.com/SPL_12Strand_EyeSpliceBrumm...

    http://www.neropes.com/SPL_12Strand_EyeSpliceBrummel.aspx
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    MacEntyre kindly sent me a sample of Insultex. ...

    MacEntyre kindly sent me a sample of Insultex.

    To reiterate what has been posted in other threads, it appears to be a thin (0.5 mm) sheet of polyethylene foam sandwiched between two layers of...
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    Much depends on how the webbing is to be used. ...

    Much depends on how the webbing is to be used.

    In my application, I prefer nylon precisely because it does stretch.
  7. Thread: Wiki?

    by Albert Skye
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    bump......

    bump......
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    A 3/4" gap may give better performance than a...

    A 3/4" gap may give better performance than a smaller one but foam is a much better insulator than glass. Also, I imagine gravity (i.e., vertical rather than horizontal orientation) informs those...
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    I like expanded mesh because it makes zero waste....

    I like expanded mesh because it makes zero waste. I've not converged on any specific dimensions yet. Much depends on the properties of the material and the dimensions of the slits.

    Another method...
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    Yes, more slits -> more stretch -> greater...

    Yes, more slits -> more stretch -> greater area:weight.



    I'm not sure what you mean by "superior" but I think warmth:weight and warmth:volume would be lower.
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    As it appears to me, insulation and separation...

    As it appears to me, insulation and separation are distinct. They are combined in a pleated sheet, and I see no reason not to combine them *if* it incurs no significant loss of efficiency.

    I think...
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    There you are! :) Did you ever try noseeum net?...

    There you are! :) Did you ever try noseeum net? An expanded mesh could be made from that as well. Need testing...



    You're quick! I think a geometry more like the one in the picture in my...
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    Stovemandan, Zac: My aim is to minimise weight...

    Stovemandan, Zac: My aim is to minimise weight and volume, and increase flexibility; i.e., both of the suggested materials are far too heavy for me. In any case, it's very easy to make expanded mesh....
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    insulating with foam sheets

    This thread is for general discussion of the design and construction of insulation made from foam sheet (whether it be Insultex or one of the various polyethylene/polypropylene materials made for...
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    separating layers

    It would increase labour but I think performance would improve by using more narrower pleats rather than fewer wider ones (e.g., three 1/8" pleats spread over the space between two of the 3/8"...
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    Sticky: Reminds me of IX. ;)

    Reminds me of IX. ;)
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    Sorry, I don't have answers for your questions...

    Sorry, I don't have answers for your questions but working with carbon fibre is nasty. Imagine fibreglass and asbestos but worse...

    Archery shops regularly cut shafts to length and generally throw...
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    nw0CjmsN-78

    nw0CjmsN-78
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    Several posts advise procedures which may cause...

    Several posts advise procedures which may cause permanent damage leading to unexpected strap failure.

    I like to consider the physical properties of the materials I use, and whatever comes into...
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    I trust Acer's judgement regarding tree damage. ...

    I trust Acer's judgement regarding tree damage.

    As well as protecting trees from the suspension line, tree slings also protect the suspension line from trees (i.e., sap, algae, abrasion, &c.)....
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    Speaking of classifications, the appropriate...

    Speaking of classifications, the appropriate place for this thread appears to be Feedback and suggestions.
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    No worries; credit should go to those good...

    No worries; credit should go to those good authors anyway, and to caves.org for keeping it online. :)

    By the way, I've noticed that industrial slings tend to be sewn that way.
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    I also measured 3 oz/yd^2

    I also measured 3 oz/yd^2
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    Did you have any trouble with #3?

    Did you have any trouble with #3?
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    Sticky: Double Wall Knot (with two strands) ABoK #779...

    Double Wall Knot (with two strands)

    ABoK #779

    The two-stand Matthew Walker (interlocked overhand knots), ABoK #776 is worth knowing too.
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    Did anyone try welding this stuff with an iron?

    Did anyone try welding this stuff with an iron?
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    related thread

    related thread
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    MIL-W-43668 Type II...

    MIL-W-43668 Type II

    TN Webbing has low prices and good service. They may also have non-milspec webbing that meets your needs.
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    Mine uses a two-wrap prusik and the retaining...

    Mine uses a two-wrap prusik and the retaining bight makes a turn around each leg.
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    I used to sleep on my side but after using a...

    I used to sleep on my side but after using a hammock, I began sleeping on my back (more or less; i.e., turned slightly to one side or the other but still more on back than my side).

    It felt...
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    I like bottom entry in theory, but in practice...

    I like bottom entry in theory, but in practice (at least on HH) the seam gives me too much discomfort as it presses against my legs.

    It's significantly reinforced and doesn't stretch like the...
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    Isn't that the Hammock Forums way? ;)

    Isn't that the Hammock Forums way? ;)
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    They can be secured using a girth hitch or clove...

    They can be secured using a girth hitch or clove hitch.
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    For a given amount of tape, I imagine you'll get...

    For a given amount of tape, I imagine you'll get greater strength (by distributing force over a larger area) if the tape is folded on an angle to minimise overlap (i.e., not perpendicular).
  35. Thread: Whole Hog

    by Albert Skye
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    Thanks for introducing yourself Sam; interesting....

    Thanks for introducing yourself Sam; interesting.

    You make music (bluegrass or otherwise)?

    In any case, keep them clippers sharp! ;)
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    Here's a similar thread.

    Here's a similar thread.
  37. Thread: Guy Lines

    by Albert Skye
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    Three-Ply Knot, ABoK #577

    Three-Ply Knot, ABoK #577
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    I like to exercise my body and mind, especially...

    I like to exercise my body and mind, especially in the wilderness; to make do with what one has at hand.

    Simplicity and versatility are generally more important to me than weight, though in my...
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    On the Hawaiian Islands (a little colder), I used...

    On the Hawaiian Islands (a little colder), I used a piece of fleece, folded a few times under my torso (groin to shoulders), inside the hammock. I also found a wind break to be essential (a poncho,...
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    How would you describe the stretch in comparison...

    How would you describe the stretch in comparison to other materials?
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    One can also give up the pack and use the hammock...

    One can also give up the pack and use the hammock in its place.

    I like versatility but sometimes specialised solutions are more useful to me.

    My tree slings tend to get rather nasty, covered in...
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    One disadvantage of the sandwich is that the two...

    One disadvantage of the sandwich is that the two areas of attachment overlap, concentrating force; i.e. the force can be distributed over twice the area by not overlapping.
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    I used a similar ratio for while but I've come to...

    I used a similar ratio for while but I've come to prefer 3:4.

    Good fishing. :)
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    Tree slings.

    Tree slings.
  45. Tree Slings article equations corrected

    My apologies to anyone who was confused by the equations in my Tree Slings article.

    Somehow I simplified them destructively; they appear to be correct now.

    (I'm posting here because the forum...
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    I imagine those trees don't need much protection...

    I imagine those trees don't need much protection (with a substantial cork layer and large diameter).

    I'd be inclined to make slings for smaller diameter trees and use extensions for the big pines....
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    Testing D:d would be useful in understanding the...

    Testing D:d would be useful in understanding the behaviour of HMPE (the plot in the link is for wire rope, and I'm told the performance of HMPE is likely to worse).

    Of course, a spliced eye (close...
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    A pair of 2.5 m slings with 50% coverage in...

    A pair of 2.5 m slings with 50% coverage in basket hitch arrangement would weigh about 3 oz using the nylon mil-spec webbing.

    I should mention that I neglected to include the weight of toggles (or...
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    Thanks, do you happen to the weight for a given...

    Thanks, do you happen to the weight for a given length?
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    I've entertained similar thoughts. One...

    I've entertained similar thoughts.

    One significant problem is uneven loading on the lines caused by irregularities in the tree surface.

    I decided to use commercial webbing because it's...
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