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Forum > Miscellaneous > Stitch Tension Rant ( Moderated by Deepika, EleanorSews, CynthiaSue)

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Stitch Tension Rant
Work related, sorry...
Al Johnson
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Al Johnson
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Date: 11/5/13 1:43 PM

So a vendor of ours is making parachute deployment bags for us. The deployment bag is an integral, very important part of the deployment sequence that puts the parachute in the windstream in position to inflate properly. Also, the dang parachute has to FIT INSIDE. So our vendor has their stitch tension so tight that the bag has shrunk up so far that we can't get the folded parachute into it.

Why do some folks think a stitch has to be that darn tight? The seams on this thing are visibly puckered, and they have lost over an inch in every dimension from it.

Just ranting to people who will understand. Thanks!

-- Edited on 11/5/13 1:44 PM --

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A sewing machine is just a welder for textiles.

Doris W. in TN
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In reply to Al Johnson <<
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Date: 11/5/13 1:58 PM

Sounds like that vendor needs to be replaced, if they cannot produce to the specs.

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Al Johnson
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Al Johnson
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In reply to Doris W. in TN <<


Date: 11/5/13 10:24 PM

I hear you, but in this case, we probably can't can them. Because "they" really are "us." They are a division, or subsidiary, whatever. Same company, but a long, long way off. Another problem in this particular case is that the drawing for the bag has no finished dimensions; only the cut size or pattern size. So we have nothing to base a rejection on, other than it WON'T WORK. Which just isn't quite good enough.

I requested a test where they would make up three sample strips with stitching varying the tension, to see how much takeup there was with the different tensions, and then maybe make adjustments to the machine tensions in production. Was told they "don't have time."

I'm done arguing with these people, and have kicked the problem upstairs to management.

Grrrrrrrrrrrrrrr...

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A sewing machine is just a welder for textiles.

PattiAnnJ
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Date: 11/6/13 3:34 PM

Take one bag with tight tension and one with correct tension and let management "SEE" why the chute may malfunction.

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"Improvise, adapt and overcome." - Clint Eastwood/Heartbreak Ridge

anae
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anae
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In reply to Al Johnson <<


Date: 11/6/13 10:04 PM

So, if this continues, people might die because their parachutes won't deploy?
And no one cares because they don't have time to do it the right way?
Whoa, that is messed up.
You guys must be stressed out over this.

Al Johnson
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Date: 11/6/13 11:10 PM

There won't be anybody having a failed parachute over this. Any bag (or anything else) that doesn't work properly gets a red tag and goes into the QA hold area. They are just starting production of this item, and just today we got a very good one from them. So somehow they either loosened up the tension or cut the bag bigger to begin with. Looking much better now. There are changes going through Engineering to correct the issue with the print, and once that goes through, there are no more excuses. So the system is working out the problems, but it was pretty annoying for a while there. And I had to rant.

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A sewing machine is just a welder for textiles.

Learn To Sew
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In reply to Al Johnson <<


Date: 11/7/13 1:50 PM

Deleted
-- Edited on 11/7/13 2:52 PM --

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PattiAnnJ
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In reply to Al Johnson <<
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Date: 11/7/13 4:04 PM

Now, don't you feel better. Letting off steam is good for the arteries! And...........we don;t mind.

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"Improvise, adapt and overcome." - Clint Eastwood/Heartbreak Ridge

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