Jonas, Anything I am doing with Down you could do
with a synthetic insulation and I would guess it to be
much easier to work with. I have thought about using
Polarguard "D" for several things. It hasn't been
available to the "make-it-yourself" folks but that may
change someday. I want the Polarguard "D" because it
is reported that you can squeeze water out of it if it
gets soaked without hurting it and it will still keep
you warm when damp/wet. I think that the synthetic
insulation would be easy to put into the Poly Tubes.
My 1st thought would be to buy it in a long enough
piece that I could cut long strips the width and
length of the Poly Tubing. Then slide the insulation
into the Poly Tubing and seal that end about 80%. The
main difference as I see it between Synthetic
insulation and Down is that Down will compress
smaller and should be lighter, shell material being
the same for both items. If you took a 20 degree
Down bag it would be lighter and compress to a smaller
size than a Synthetic 20 degree bag. Let me say that
there are new products coming on the market all the
time and the weight and compression issue seems to get
closer and closer everyday. I think cost will be a
big issue as the weight difference between Down and
Synthetic gets the same or very close.
You can buy "remnant" pieces of synthetic insulation
from "Quest Outterfitters" that doesn't cost much.
This would give you some to play with and maybe make a
few small items. I wanted to make a pair of insulated
Gaiters to wear with my trail runners in cold weather.
I was able to buy a "remnant" piece for $2.00 that
was more than enought for the Gaiters.
Look for the word "REMNANTS" and click on it. What
they have changes as it is sold but they have some
listed at this time.
The pictures are of 200wt. Thinsulate. This should
give you an idea of what you would be working with. It
has a backing material on one side to hold it all
together. This piece was 18" by 60". It had a small
piece torn from one edge and cost $2.00. The Down I
get comes in a plastic bag and if you are not careful
when you open the bag the Down can go everywhere.
Like a bag of of popcorn that is poping and has a hole
in the bag = mess. The Down I have came from
Thru-Hiker.com. It is 800+ and cost $24.00 for 3oz's.
For me the main advantage of Down is that it will
compress much smaller than a like (temp rating) item
made of a synthetic material. This means a smaller
volume or a pack bag that is smaller and then
Bill in Texas
> Thanks, Bill. One other thought (after reading the
> articles about The
> Adventures of Working With Down): How well do you
> think that man-made
> insulation would work in your design? Again, I have
> never worked with
> down OR synthetic fills (at least not when making
> something), so I don't
> know what form the synthetic stuff comes in prior to
> being sewn between
> the layers of fabric.
> Those links were great, thank you.
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