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Sewing foam?

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Feb 15, 2011 at 1:40 pm #1269207

Jack H.
Member

@found
Locale: Sacramento, CA

Hey Ya'll,

I'm fooling around before I start sewing up a pack. I'd like to use half inch foam for my shoulder straps, but I can't seem to sew through it. Any advice?

Feb 15, 2011 at 2:16 pm #1697028

Tohru Ohnuki
Member

@erdferkel
Locale: S. California

Closed cell, like a sleeping pad? Sounds difficult, you may want to just make a cloth tube and stuff the strip of pad down it.

Feb 15, 2011 at 2:16 pm #1697029

Jerry Adams
BPL Member

@retiredjerry
Locale: Oregon and Washington

I sewed through some 1/4 inch foam for backstraps that worked pretty good

Try increasing or decreasing tension (I know, obvious suggestion)

Sometimes if I didn't touch it and let the machine feed the foam through it worked better. If I tried to force it through it got all tangled on the reverse side.

Feb 15, 2011 at 2:24 pm #1697031

Nancy Twilley
Member

@goodcaver2
Locale: STL

My sewing machine's wimpy, so I sewed through my straps by hand. Don't look as pretty though.

Feb 15, 2011 at 3:30 pm #1697054

Jack H.
Member

@found
Locale: Sacramento, CA

Yep, sewing through closed cell foam. I think that I've figured out a solution. My sewing machine won't do the full half inch, so I'm going to bevel down bits of the foam where I want to sew bartacks through.

Feb 15, 2011 at 4:28 pm #1697094

Jerry Wick
BPL Member

@jerryw
Locale: Illinois

Just a thought – you could bartack the webbing to the outside layer of the strap ahead of time, then sew the strap pieces together, then insert the pad into the strap. That way you wouldn't need to sew through the padding.

FWIW – a way that I had success sewing through padding was to use the largest needle that would fit my machine.

Jerry

Feb 15, 2011 at 4:43 pm #1697101

Daryl and Daryl
BPL Member

@lyrad1
Locale: Pacific Northwest, USA, Earth

Jack,

Adhesive backed insignia cloth can be used as a way around sewing through foam for shoulder straps. If interested check out my post entitled Insignia Cloth Shoulder Straps. This link might take you there:

STRAPS

Feb 15, 2011 at 5:28 pm #1697116

Jack H.
Member

@found
Locale: Sacramento, CA

Jerry, I've thought of that. I worry about the foam rolling in the pad tube if it's not bartacked anywhere. I've seen that happen a lot. ULA once had a run of their old style shoulder straps that weren't bartacked, and the foam just rolled around. Not good. And yet, I see plenty of MYOG packs sewn this way. The 5 Yards to SUL pack is one example. I really wonder if their foam starts rolling around…

Adhesive cloth seems like a neat idea. I'm pretty set on using Xpac for the straps though.

I just tried sewing a strap, but made it too narrow, so i'll try again later.

Feb 15, 2011 at 6:26 pm #1697156

Daryl and Daryl
BPL Member

@lyrad1
Locale: Pacific Northwest, USA, Earth

Jack,

I got a bunch of 2" wide tubular poypro from Seattle fabric a while back and made some shoulder straps out of it. I was in the "shoulder straps experimenting" stage of my life.

I was impressed how comfortable they were and, of course, silly easy to make.

Unfortunately the stuff was really bright yellow and called too much attention to me.

Daryl

Feb 15, 2011 at 6:52 pm #1697165

Lance M
BPL Member

@lancem
Locale: Oregon

Jack,

I've sewn through pack straps with 3/8" blue ccf padding. As I recall, I had to lift the presser foot beyond it's normal up position in order to get the strap under the foot. I was surprised that the feed dogs pulled the strap right along and that I didn't need to adjust the thread tension. I don't think I could have fit 1/2" under the foot.

Here's the straps:
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