Tips and Techniques - a thread for MYOG types

Discussion in 'DIY & MYOG' started by Graham, Oct 27, 2016.

  1. Clare

    Clare Thru Hiker

    @cathyjc sounds right. That way the bulk of the quilt will be to the left and only the collar will be to the right.

    Although I think I would have tried to sew the inner collar to the inner fabric and the outer collar to the outer fabric (with the orientation as Cathy describes) then put the insulation in the collar and then put the insulation in the main part of the quilt and tacked the collar insulation to the body insulation before sewing up the main quilt. In order to avoid a sewn through seam at the lower edge of the collar. For cold spot reasons. But would be more complicated to do it like that.

    Where does the drawstring go? At bottom or top edge of the collar?
  2. cathyjc

    cathyjc Thru Hiker

    Like @Clare suggests above - binding is a narrow edging material - you might want something more like a "collar" - same idea.
  3. oreocereus

    oreocereus Section Hiker

    Gotcha. Yeah I initially wanted to imitate the AS tucas poncho design, but felt it might get a bit tricky as a first project.

    I saw another design, which looks a bit simpler:
    https://liteway.equipment/sleeper-quilt

    It’s a bit hard to tell, but it looks like it’s just a flap to cover the drafts/maybe use as a neck collar.
  4. Enzo

    Enzo Thru Hiker

    Weight wise make a lot of sense poncho quilts, hope it works out well:thumbsup:
  5. oreocereus

    oreocereus Section Hiker

    Hope so too. It’s only really for summer times when I might think about not bringing my jacket anyway, which I’ve done a few times then felt a touch colder than wanted watching a sunset etc.
  6. Dave V

    Dave V Moderator Staff Member

  7. Clare

    Clare Thru Hiker

    Cuben stress strength: I have some left over cuben 2.92oz and I’m thinking of making a chair sling out of it. The silnylon i used in the last version was too light and tore at the stress point.

    Am I right in thinking that cuben, if stitched and under stress would also be weak. I’m thinking of stitching and then taping the stitches to give extra glue over the holes. Is it strong when bonded but weakened significantly by stitching?
  8. Teepee

    Teepee Thru Hiker

    Cuben has very little stretch. When it's sewn, force is very localised to just a very small area and so it tears. It also suffers from creep (all UHMWPE does). It's the reason why there are no commercial cuben hammocks; back in the day when Cuben first came out, hammock makers scrabbled to make and sell hammocks from it but they all tore and dumped folk to the ground. When bonded, the bonding spreads the force more and the adhesive provides some elasticity, this is why it's a stronger bond.
    When sewn and bonded, the sewing helps stop the adhesive creep. The bonding over the top spreads the load.
    If I were you, I'd likely look at Cuben sail construction...it uses 'fingers' that radiate away from the high stress points.

    Nylon however, has a lot of stretch and spreads the force around more of the stitched area. It also doesn't suffer from creep. Nylon in this application has a lot of benefits over Cuben and I'd look at how you sew it just as much as the fabric weight.
    I made a chair sling from Nylon 0.9 6:6, it tore instantly. The same fabric makes some of my hammocks and has done 100's of nights with my fat arse in it. This difference in performance is simply down the spreading the applied load over a large enough area.
    Clare likes this.
  9. Clare

    Clare Thru Hiker

    Cheers. I’ll try a differently constructed nylon sling then before cutting up my expensive cuben, which is probably enough for another pack. Not that I ever want to make a pack again !!
    Teepee likes this.
  10. Teepee

    Teepee Thru Hiker

    :biggrin:

    Packs are quite labour intensive. I enjoy them up to the point where they need manoevring under the machine and need constant adjustment to avoid a sew through.
  11. Clare

    Clare Thru Hiker

    It has taken a huge amount of time!! Plus waiting for all the extra component bits when the bits I originally got turned out to be not quite right or got used up on my 3prototypes. Now I am so nearly finished and it turns out the extreme tex sent me the hook side but not the loop side for my hook and loop. Aggghhh.
  12. Snowonher

    Snowonher Summit Camper

    Not sure if this has already been shared, but a short vid from Dyneema looking at different construction methods of DCF. He also mentions a tent shouldn't be stuffed into a stuff sack, but rolled :frown: woops.

    Robert P, cathyjc and Chiseller like this.

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