Sewing nylon bag questions
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Sewing nylon bag questions Alan 06-16-2006
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Posted by Alan on June 16, 2006, 7:36 pm
Hi, I am new to sewing and have been trying to make a few nylon camera bags
for myself. My sister has a Kenmore 81514 sewing machine which seems to work
fine with finer threads. But when I use some thicker nylon threads on nylon
fabrics, the thread on the bottom is just not tight enough. Everywhere I
read suggests the top tenson is not high enough, but I was at 9, which is
the max already. I tried to adjust the bobbin so that the bottom thread has
as little tension as it could (correct procedure?). I also tried #11 & 16
needles. Still, the sewed thread on the bottom of the nylon fabric is still
a little loose at best. My question is, is my machine just not up to the job
because its max tension is too low, or the motor is weak, or sewing nylon
bag requires some special machine? I plan to make many different bags with
finest quality I could, and mostly will be 4-8 layers nylon fabric
sandwiched together, depends on different parts of the bags. I also wonder
if I need special machine to sew some very tight area? Is my expection
realistic? Any help is much appreciated. Please pardon my long story.



Posted by Kate Dicey on June 16, 2006, 8:05 pm
Alan wrote:

> Hi, I am new to sewing and have been trying to make a few nylon camera bags
> for myself. My sister has a Kenmore 81514 sewing machine which seems to work
> fine with finer threads. But when I use some thicker nylon threads on nylon
> fabrics, the thread on the bottom is just not tight enough. Everywhere I
> read suggests the top tenson is not high enough, but I was at 9, which is
> the max already. I tried to adjust the bobbin so that the bottom thread has
> as little tension as it could (correct procedure?). I also tried #11 & 16
> needles. Still, the sewed thread on the bottom of the nylon fabric is still
> a little loose at best. My question is, is my machine just not up to the job
> because its max tension is too low, or the motor is weak, or sewing nylon
> bag requires some special machine? I plan to make many different bags with
> finest quality I could, and mostly will be 4-8 layers nylon fabric
> sandwiched together, depends on different parts of the bags. I also wonder
> if I need special machine to sew some very tight area? Is my expection
> realistic? Any help is much appreciated. Please pardon my long story.
>
>
What weight of nylon are you sewing? All our camera bags (many of the
Camera care Systems bags like these: http://www.ccscentre.co.uk/ Look
at the Classic range to see the sort of thing) are Cordura outers with
foam padding and an inner nylon lining. This mixture is rather too much
for a standard domestic machine.

If you are aiming to make this sort of thing regularly, you'll need
tougher machine than a standard domestic model. DO NOT look at the
things called 'industrial strength' on ebay - 99% of those are standard
domestic models, no matter what the sellers claim. You want to look
more for this sort of machine: http://www.solentsew.co.uk/sailrite.htm
(NAYY, just using this as an example)

For sewing into awkward corners, you need a specialist post bed or
cylinder bed machine, which will be a true industrial, VERY FAST, and
not for the faint-hearted or the beginner!
--
Kate XXXXXX R.C.T.Q Madame Chef des Trolls
Lady Catherine, Wardrobe Mistress of the Chocolate Buttons
http://www.katedicey.co.uk
Click on Kate's Pages and explore!

Posted by tahirih luvs 2 sew on June 16, 2006, 10:08 pm
Kate Dicey wrote:
> Alan wrote:
>

> >
> What weight of nylon are you sewing? All our camera bags (many of the
> Camera care Systems bags like these: http://www.ccscentre.co.uk/ Look
> at the Classic range to see the sort of thing) are Cordura outers with
> foam padding and an inner nylon lining. This mixture is rather too much
> for a standard domestic machine.
>
> If you are aiming to make this sort of thing regularly, you'll need
> tougher machine than a standard domestic model. DO NOT look at the
> things called 'industrial strength' on ebay - 99% of those are standard
> domestic models, no matter what the sellers claim. You want to look
> more for this sort of machine: http://www.solentsew.co.uk/sailrite.htm
> (NAYY, just using this as an example)
>
> For sewing into awkward corners, you need a specialist post bed or
> cylinder bed machine, which will be a true industrial, VERY FAST, and
> not for the faint-hearted or the beginner!

<snipped>

^ agreed. One thing I need to point out though is that if you have
this:

> >the thread on the bottom is just not tight enough.

<snipped>

You should try and TIGHTEN the bobbin (bottom thread) tension, instead
making it looser, bc that is only going to make your problem worse.
Sort of like using a knife to cut deeper into an already existing wound
then putting salt and lemon juice on it. To tighten it, locate a screw
that should be on the side, near where you thread the case with thread,
and use a small screwdriver and tighten it by turning right.

Tahirih, humble sewist
"Two things are infinate; the universe and human stupidity.
I'm not sure about the former." -Albert Einstein


Posted by Kate Dicey on June 17, 2006, 3:15 am
tahirih luvs 2 sew wrote:

> Kate Dicey wrote:
>
>>Alan wrote:
>>
>
>
>>What weight of nylon are you sewing? All our camera bags (many of the
>>Camera care Systems bags like these: http://www.ccscentre.co.uk/ Look
>>at the Classic range to see the sort of thing) are Cordura outers with
>>foam padding and an inner nylon lining. This mixture is rather too much
>>for a standard domestic machine.
>>
>>If you are aiming to make this sort of thing regularly, you'll need
>>tougher machine than a standard domestic model. DO NOT look at the
>>things called 'industrial strength' on ebay - 99% of those are standard
>>domestic models, no matter what the sellers claim. You want to look
>>more for this sort of machine: http://www.solentsew.co.uk/sailrite.htm
>>(NAYY, just using this as an example)
>>
>>For sewing into awkward corners, you need a specialist post bed or
>>cylinder bed machine, which will be a true industrial, VERY FAST, and
>>not for the faint-hearted or the beginner!
>
>
> <snipped>
>
> ^ agreed. One thing I need to point out though is that if you have
> this:
>
>
>>>the thread on the bottom is just not tight enough.
>
>
> <snipped>
>
> You should try and TIGHTEN the bobbin (bottom thread) tension, instead
> making it looser, bc that is only going to make your problem worse.
> Sort of like using a knife to cut deeper into an already existing wound
> then putting salt and lemon juice on it. To tighten it, locate a screw
> that should be on the side, near where you thread the case with thread,
> and use a small screwdriver and tighten it by turning right.
>
> Tahirih, humble sewist
> "Two things are infinate; the universe and human stupidity.
> I'm not sure about the former." -Albert Einstein
>
But remember that if there are loops on the underside of the sewing, the
problem lies with the UPPER thread, which may need higher tension.

--
Kate XXXXXX R.C.T.Q Madame Chef des Trolls
Lady Catherine, Wardrobe Mistress of the Chocolate Buttons
http://www.katedicey.co.uk
Click on Kate's Pages and explore!

Posted by Alan on June 17, 2006, 6:09 am
Thanks for the reply Kate & Tahirih. I have been sewing Cordura 1000D and
plan to do some Ballistic like Nylon eventually. Sounds like I have got a
bigger project than I can handle. I was wondering, should I tighten the
bobbin screw all the way, which will render the thicker nylon thread with
some resistance to pull by fingers? There is no loop on the underside of the
sewing when I did my best, just not as straight or tight compared to the
top. I set the top tension to max already so I guess not much else I could
do, with the machine I have anyway. Are there any links which might teach me
more on this particular subject and explanation on different industrial
sewing machines? Any pointer would be great. :-)

> > You should try and TIGHTEN the bobbin (bottom thread) tension, instead
> > making it looser, bc that is only going to make your problem worse.
> > Sort of like using a knife to cut deeper into an already existing wound
> > then putting salt and lemon juice on it. To tighten it, locate a screw
> > that should be on the side, near where you thread the case with thread,
> > and use a small screwdriver and tighten it by turning right.
> >
> But remember that if there are loops on the underside of the sewing, the
> problem lies with the UPPER thread, which may need higher tension.



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