Dec 1, 2012 at 6:54 am #1296625
So my seamstress tried sewing the stay sleeve on two separate pieces of 1/16" thick HDPE plastic that I bought from Professional Plastics, and it was too brittle to handle her sewing needle on her industrial machine and the HDPE cracked/split/broke.
Is there another type of nylon/plastic that is more pliable/less brittle, so that she can sew through it?
Really need some help, I am getting frustrated.Dec 1, 2012 at 7:24 am #1932362
I'll try te UHMW sheeting and see how it does with stitching. Found it after reviewing my other thread. Any other ideas?Dec 1, 2012 at 12:14 pm #1932422
@davecLocale: The West Slope
I have no experience with sewing webbing to plastic (this is what, in my foggy recollection, the stock Dana sheet used). If you don't anticipate needing to remove the stays often, you could laminate (with contact cement) a layer of packcloth or thin CCF over the bottom and to of the frame sheet, with the stays inside. This will hold them in place and most importantly, prevent the hard edges of the stays from wearing through the bottom of the pack itself.
Good luck.Dec 1, 2012 at 1:28 pm #1932433
That's a great idea, I did not think of that. I appreciate the creative thinking!Dec 1, 2012 at 5:56 pm #1932462
I have sewn 1/16" hdpe from professional plastics on my industrial walking foot without any issue cracking the plastic. It actually sewed very nicely, I expected it to be much more difficult. I stitched all over a small off cut trying to see if I could get the plastic to split or crack and it did not.
I had some issues with professional plastics sending me the wrong materials, they made it right and got the errors corrected.
I would make sure it is hdpe.
Good luckDec 1, 2012 at 10:10 pm #1932503
Michael FogartyBPL Member
For some reason anything under 1/16" thick, your only able to get up to a 12'"x 12" sheet.
Guessing you'll need a 12"x24" or 12"x36" piece. I've sew through 4 layers of 1000d cordura and this 1/16" uhmw nylon. It is very soft and flexible.Dec 1, 2012 at 10:12 pm #1932505
The sheeting I received is surprisingly brittle. Makes me wonder if they sold me something else besides HDPE. I will get some samples from some other companies and compare.
I went with them since they are only 30 minutes away, and I can pick orders up via willcall to save on shipping.
i will post some photos of the damage done as my seamstress attempted to sew through the sheeting I received.Dec 1, 2012 at 10:21 pm #1932506
Michael FogartyBPL Member
No experience with HDPE, but I do with UHMW nylon, and it is very tough stuff.Dec 2, 2012 at 7:29 am #1932555
I haven't tried the UHMW nylon. it sounds interesting, I may have to try some.
The HDPE I used is pretty tough. It was easy to cut, drill and sew.
If you are only 30min away, I would stop by and make sure they gave you the right material and maybe if ask if you can look at some other options.
Here are a couple pics of the frame sheet I made using 1/16" HDPE.Dec 6, 2012 at 6:22 pm #1933710
Lawson KlineBPL Member
If its brittle and it cracked or split while sewing then it wasn't HDPE. You can sew through the stuff like butter and there should be no issues at all even with the thick stuff 1/4"+. If I were you I would call your plastic supplier and tell them to re-send you the right material : ) Let me know if you have any questions.
LawsonDec 6, 2012 at 6:36 pm #1933715
Thank you very much. I will call them and ask them about it.
I ended up ordering some UHMW plastic from McMaster-Carr out of L.A. and I really like the feel of it over what Professional Plastics sent me. (It arrived today). Can't wait to have her sew through this, I suspect it will do just fine.
Also…night and day difference between the two companies to deal with.Dec 6, 2012 at 6:42 pm #1933716
John DonewarBPL Member
@newtonLocale: Southeastern Texas
I did something similar for my wife's pack.
I didn't do boring old circular cut outs.
The material came from the housewares department at Walmart. It's a plastic place mat. The last one I bought was $2.00 and measured 12" x 18".
NewtonDec 7, 2012 at 2:29 am #1933765
If you can't sew through the HDPE you can try normal polyethylene (PET). This is very similar to the material's features, but it is easier to cut and sew through, even through a thick plate.
Even if you have the right material, often sewing machine will behave differently when sewing such material. Tear thread or sewing ugly and weak.
So after you've exchanged a needle to a new needle, sometimes you have to place the needle at an angle different from sewing fabric.
Sometimes it helps if both sides of the PET or HDPE has a layer of fabric.
So less rubbing the sewing thread and tear it.
I hope you can understand what I wrote after the wonderful translation by Google Translate.
Eran.Dec 10, 2012 at 9:14 pm #1934672
I bought the UHMW from McMaster-Carr (very helpful company). Had my seamstress sew through the 1/16" thickness with no problem at all. Glad I used this material, as it really needed to flex in order to get it to fit in the upper pockets of each Terraplane. Both Terraplanes were around 20 years old, one looked almost new, but the frame sheet was still torn a little, the other was faded but intact, and that frame sheet was really torn badly.
Everything went smoothly.
Thanks so much for all of your helpful replies!Jul 2, 2014 at 8:13 pm #2116964
What needle should be used with hdpe? I'm trying to sew two layers of 1/32" with a 80/12 microtex needle and an having trouble with the needle bending. Would something like a jeans needle be more appropriate?
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