edge seams on silnylon tarps

Discussion about making bushwalking-related equipment.

edge seams on silnylon tarps

Postby Moondog55 » Mon 09 Feb, 2015 1:47 pm

When sewing a 25mm folded seam is it stronger to sew one edge first and then fold or is a simple fold and stitch strong enough?
This is 30d from Simon at Tier Gear and the tape loops are going to be 25mm polyester grosgrain and I intend to add reinforcing at each corner and at each tie-out and the extra fabric will be included before sewing
A simple flat tarp fabric width by whatever length I have, an Experiment as I haven't sewn this fabric before
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Re: edge seams on silnylon tarps

Postby perfectlydark » Mon 09 Feb, 2015 2:58 pm

Double fold then stitch should be strong enough,.and is all i do with hammocks. I usually single fold then pin, then roll again and repin then sew, mainly because i can never get a straight fold if i just go straight for the double roll.
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Re: edge seams on silnylon tarps

Postby simonm » Mon 09 Feb, 2015 7:01 pm

I just fold the rolled hem and double stitch.

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Re: edge seams on silnylon tarps

Postby Moondog55 » Tue 14 Apr, 2015 12:47 pm

I have been having a lot of trouble with the silnylon in my machine so I haven't even started the tarp project. Yesterday I found the missing walking foot attachment and now it sews reasonably well
Hopefully I will get started after next week-ends Glamping
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Re: edge seams on silnylon tarps

Postby andrewa » Tue 14 Apr, 2015 2:01 pm

Ah...the missing walking foot!

Never had a "walking foot", but it sounds a good concept. I have managed to sew plenty of silinylon, and I normally pin pretty well every seam before sewing, especially those that are curved. Whilst time consuming, it does at least minimise "botching" a seam. On a side seam, I'd probably only end up pinning every 30cm or so.

Happy sewing, and looking fwd to seeing the finished project.

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Re: edge seams on silnylon tarps

Postby perfectlydark » Tue 14 Apr, 2015 2:17 pm

Yep i find pinning is essential for me. Longest part in the process but worth it.
must say i found.sewing silnylon to be fairly easy though, pinning took a bit longer than some other fabrics though
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Re: edge seams on silnylon tarps

Postby Moondog55 » Tue 14 Apr, 2015 2:24 pm

Even with pinning the fabric simply slipped on my machine and I kept getting it alternatively too loose and too tight. I'm thinking of ditching the bonded nylon tho and going with polyester to see it that helps too
OR
That cheap Rasant from Simon perhaps
Then just do the tieouts with the bonded nylon
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Re: edge seams on silnylon tarps

Postby undercling-mike » Wed 15 Apr, 2015 12:24 am

I suspect that using bonded nylon thread is causing at least some of your problems. That's heavy duty stuff and being nylon stretches more than polyester thread, your machine might not cope with it too well and the silnylon fabric is too light to benefit from the strength of the nylon thread. Use Rasant 75 or some equivalent quality poly thread for the hems as well as the tieouts, with a good stitch pattern it's more than strong enough.
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Re: edge seams on silnylon tarps

Postby Moondog55 » Thu 10 Aug, 2017 8:23 am

NO Nope and frustration
Even with the walking foot and changing to the Rasant thread this grey stuff will not sew on my machine
It does sew easily on Ceciles but I am not allowed to use that one and The Boss is busy sewing tadpole clothing.
I'm thinking of either sending it to TerraRosa to have it sewn or just giving it away as a PIF
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Re: edge seams on silnylon tarps

Postby simonm » Thu 10 Aug, 2017 8:31 am

What's happening there MD?
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Re: edge seams on silnylon tarps

Postby Moondog55 » Thu 10 Aug, 2017 8:48 am

I think it is too thin for the thread to lock properly and it is so slippery that even with the walking foot it won't feed in a regular manner, no matter what I do with the foot pressure or thread tension
I really need two machines, this one got some work done so I could sew the battle dress and the woollens and now it won't handle this thin slippery
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Re: edge seams on silnylon tarps

Postby north-north-west » Thu 10 Aug, 2017 9:00 am

Sew it by hand.
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Re: edge seams on silnylon tarps

Postby Moondog55 » Thu 10 Aug, 2017 12:05 pm

No way will my hand stitching be as strong as a machine seam on 15 metres of edges
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Re: edge seams on silnylon tarps

Postby simonm » Thu 10 Aug, 2017 12:43 pm

What machine? Needle? Is the thread Rasant 75?

Top tension for sil is usually fairly light for most machine. Stitch length around 3mm or so.
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Re: edge seams on silnylon tarps

Postby Moondog55 » Thu 10 Aug, 2017 1:30 pm

My Sew by Janome #7 needles sharp,new point and the Rasant is Grey very fine and I bought it from you Simon
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Re: edge seams on silnylon tarps

Postby simonm » Thu 10 Aug, 2017 1:44 pm

Moondog55 wrote:My Sew by Janome #7 needles sharp,new point and the Rasant is Grey very fine and I bought it from you Simon


Sounds like Rasant 120. Your needle is too small try #10 or #12.
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Re: edge seams on silnylon tarps

Postby Moondog55 » Thu 10 Aug, 2017 1:50 pm

Then it didn't come from you It is way too fine already and passes easily through the eye but I'll try a #10 first
It is finer than the standard polyester from Guterman which also won't sew
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Re: edge seams on silnylon tarps

Postby simonm » Thu 10 Aug, 2017 1:58 pm

Moondog55 wrote:Then it didn't come from you It is way too fine already and passes easily through the eye but I'll try a #10 first
It is finer than the standard polyester from Guterman which also won't sew


It may have come from us. Is it Gutermann's or Amann Rasant thread?
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Re: edge seams on silnylon tarps

Postby Moondog55 » Thu 10 Aug, 2017 2:08 pm

It's on a red cone Simon, 1000m
Hmmm Maybe I got one of the Bosses by mistake Cecile uses cones too for the overlockers, I suppose I may have accidentally threaded up with overlocker thread
OOOps
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Re: edge seams on silnylon tarps

Postby simonm » Thu 10 Aug, 2017 2:39 pm

Rasant is on a red cardboard 1000m cone but it will have Rasant printed on it. Anyway I would try a bigger needle, and make sure you have the right thread :D.
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