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-   -   Wrinkles when sewing curves on vinyl (http://www.hotrodders.com/forum/wrinkles-when-sewing-curves-vinyl-216728.html)

mortizx 03-14-2012 05:37 PM

Wrinkles when sewing curves on vinyl
 
Hi, can you help me figuring this out? I sew a curve and top stitch it and it creates wrinkles and or dimples. I trimmed all the salvage underneath but it didnt help.

Marine cushion

https://picasaweb.google.com/home?al...tos_from_posts

DanTwoLakes 03-14-2012 06:43 PM

Sorry, none of your pictures are showing up. I can tell you right off the bat that cutting out the selvage (not salvage) won't do any good, in fact it will hurt rather than help. Until I see what you're talking about I can't help you.

mortizx 03-14-2012 08:21 PM

Even happens with single top stitch
 
Here are the pics in photobucket

http://s1235.photobucket.com/albums/ff421/mortizx/

DanTwoLakes 03-15-2012 08:12 AM

3 Attachment(s)
It looks to me like you're stretching one piece of the vinyl as you're sewing. Are you trying to follow witness marks? Here is what it should look like. I make relief cuts on one side of curved seams to let the fabric overlap before top stitching.

Is one side plain and the other side has sew foam?

mortizx 03-15-2012 09:25 AM

WOW... That help alot thank you. Now im coming up with one side shorter than the other. Is it possible for you to send me a video on how you did it? I would really appreciate it.

DanTwoLakes 03-15-2012 08:40 PM

Vinyl creeps really bad when you sew it together, especially longer pieces like you are working with. I make the pieces even longer and then cut the whole thing down to the right size when the pieces are all sewn together.

nine4gmc 03-15-2012 08:53 PM

I often catch myself pulling one side(particularly the top) when doing curves. It looks just like the cushions your post, mortizx. When mine does that, and one side comes up a bit short after redoing it, I note the shortage and try to "stretch" the short side just a bit in the long straights to compensate for that shortage. if its a big difference, the pattern may be off.

*edited OFF TOPIC QUESTION, I meant to ask Dan, what brand/pattern vinyl is that you used in the example above?

DanTwoLakes 03-15-2012 09:25 PM

You can sew two long pieces of vinyl together 20 times, and it will come out different all 20 times. There's no way to predict what will happen. Stretching one side or the other is what caused his original problem.

The vinyl was a scrap from another job, and I don't remember what it is. It is nice looking, isn't it? I'll see if I can figure out where I used it tomorrow. I think it was used in a 46 Ford I did about 1 1/2 years ago.

nine4gmc 03-15-2012 09:52 PM

Dan, it is really nice looking, I would love to cover my old set of Chromcraft chairs in that stuff. Most of the supplies I get are from Woolley Bros cause of convenience, they are right across town but their inventory is not real exotic to say the least.

Back on topic, great point, stretching it is what caused the problems to begin with so mortizx, don't listed to me or you will end up chasing your tail!

DanTwoLakes 03-16-2012 07:34 AM

1 Attachment(s)
I actually figured out what that vinyl is. It is part of the Allante collection from Morbern called Carrara Tan #CR-509. Here's a link to it: CLICK HERE It's available from Miami Corp: MIAMI

Here it is on a '46 Ford door panel.

nine4gmc 03-16-2012 03:32 PM

Dan, Thanks again for taking time to help all of us, you do not know how much it means.

DanTwoLakes 03-16-2012 09:05 PM

I can't always have the right answer, 'cuz I'm not always sure how to answer the question. I hope I get the answer right 75% of the time.

6inarow 03-17-2012 07:15 AM

Quote:

Originally Posted by DanTwoLakes
It looks to me like you're stretching one piece of the vinyl as you're sewing. Are you trying to follow witness marks? Here is what it should look like. I make relief cuts on one side of curved seams to let the fabric overlap before top stitching.

Is one side plain and the other side has sew foam?

I am having this same trouble too. I am making door panels with a 4" carpet on the bottom, a 12" pleat in the middle and a piece with no pleat on the top of the door panel. between the top and the middle pleat it doesnt go straight across the panel -it curves about 45* to the top of the panel. There is a piece of welt cording between the pleat and the flat piece.

What does "witness marks" mean?

Do I trim the foam away where the pleat and the flat panel meet?

So far I have the welting sewn to the flat panel and it looks great. I can just see that it is going to be a problem to sew the pleated piece to it.

Any advice?

DanTwoLakes 03-17-2012 08:58 AM

Witness marks are marks or notches that allow you to line up two pieces of fabric that you're sewing together.


I would sew the welt to the pleated area first, and sew the flat piece to that.

How are you padding the flat area? What kind of material is the panel made out of?

6inarow 03-17-2012 12:02 PM

I am padding the vinyl with 1/4" "scrim" - i dont know what it is officially called.the local supply ship had it. The pleats and the flat is from the same vinyl


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