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Author Topic: Pattern making
Karisma
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Post Pattern making
on: July 5, 2012, 16:06
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Hey all!

What techniques do you all use to make a pattern on something with complex curves.

The way i was shown very breifly was to draw on the item where i want my seams. Then spray glue (lightly) some scrap vinyl onto the piece onto the panel. Then to find seam lines carefully lift the vinyl up to find seam lines then draw them onto the scrap vinyl. Cut it out then transfer it to the leather/vinyl to be used.

Even if thats the technique you used, i want to know any do's, dont's, tips or tricks. Basically give it to me idiots guide style.

Cheers
Sean

Adam
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Posts: 414
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Adam
Post Re: Pattern making
on: July 5, 2012, 16:15
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Got the right idea with drawing your seams on the foam and gluing the pattern making fabric down. We use a roll of plastic for our pattern making. its see-through so you can see all the seams and alignment marks. Then draw your 1/2 or whatever seam allowance you have..

Without the see through effect, you'll never get the lines perfect with one another. for boat cushions, its a the same way, but you need to compress the foam down by shortening the patterns and such.

tinabanana
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tinabanana
Post Re: Pattern making
on: July 5, 2012, 19:05
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do you guys patern the same way for seats with custom foam (since the foam is uncompressed) as you would an oem seat that has the fabric still on it? would you shorten the patern for the custom foam similar as for a boat seat?

Karisma
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Post Re: Pattern making
on: July 5, 2012, 21:08
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One problem I have is when I have a black plastic part to cover. Design my seam lines on with chalk but they rub off and disappear when I'm spraying glue on to make a pattern.

Brent-
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Brent Parker Motor Trimming
Post Re: Pattern making
on: July 5, 2012, 21:35
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Pin it on with skewers using cheap vinyl, by using vinyl you get that slight stretch like you get with leather, don't glue the vinyl to the foam its not necessary and it could tear the foam, i won't use clear plastic cos it doesn't have enough stretch and your attachment marks will be out of whack especially for borders etc where you need it to be pliable , i will use it for inserts where I've got to see my design. You can glue vinyl when you have a hard surface and hard to cover pieces but only where you can pull it off without effecting the surface

Brent-
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Brent Parker Motor Trimming
Post Re: Pattern making
on: July 5, 2012, 21:37
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Check out my how to make a seat from scratch thread and there's a photo of a piece pinned using brown vinyl, use as many skewers as necessary

Karisma
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Post Re: Pattern making
on: July 5, 2012, 21:42
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What do I do about my chalk line rubbing off while making patterns?

8-track
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Posts: 191
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8-track
Post Re: Pattern making
on: July 5, 2012, 21:54
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I use 6 mill Clear shrink wrap polly for most of my patterns and black sharpies for marking the seat foam and pattern.

Naseem-
Muaddi
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Naseem Muaddi
Post Re: Pattern making
on: July 5, 2012, 23:21
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Use sharpies so the seams don't rub off. I never glue my patterns down. Like Brent said you can just pin it. Gluing it eats up time and makes a mess. Also, I think using material for your patterns that has similar stretch capabilities as the material you intend to upholster the seat with is very important. Clear vinyl is alright but you could do just as well with normal scrap vinyl, just mark it from the underside.

tinabanana
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tinabanana
Post Re: Pattern making
on: July 5, 2012, 23:59
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To mark paterns on black, why not use those silver pens? Not sure what they are called but you can find them at craft stores or even walmart sometimes

Karisma
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Post Re: Pattern making
on: July 8, 2012, 16:34
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Well bought some clear PVC and how I've managed without this stuff is beyond me. At £3 a metre it's cheap enough. Hoping my patterns will become more accurate too.

one stitch
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one stitch
Post Re: Pattern making
on: July 9, 2012, 18:45
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I think Im going to try patterning with the scrap vinyl the probelm Im running into using the plastic was not getting it as tight as I would like or thinking what the streach would take and coming up to short or way to tight by cheating on the seam allowance ex marking it a 1/4 and sewing It a 1/2 . Ive used the plastic when im doing marine stuff cause you can eaisly adjust the tightness with you staples.

RightCoast-
Rods
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RightCoastRods
Post Re: Pattern making
on: July 10, 2012, 01:48
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i use plastic as well. the way i was taught was to just spray a little bit of spray tack or contact cement to the plastic and stick it on to ensure it doesn’t move on you and aslong as you spray lightly it will pull right off then i spray the plastic with a little silicon so it doesn’t stick to itself or anything. i might try the vinyl way but how do you get a truly accurate pattern if ur lifting it up then putting it down then drawing the seam that’s the part iv never understood

papasage
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papasage
Post Re: Pattern making
on: July 10, 2012, 11:00
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Image[/img]

i never pattern just cut out of the material i am covering with

papasage
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papasage
Post Re: Pattern making
on: July 10, 2012, 11:01
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Image

Brent-
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Brent Parker Motor Trimming
Post Re: Pattern making
on: July 10, 2012, 14:28
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Quote from Jeff on July 10, 2012, 01:48
i use plastic as well. the way i was taught was to just spray a little bit of spray tack or contact cement to the plastic and stick it on to ensure it doesn’t move on you and aslong as you spray lightly it will pull right off then i spray the plastic with a little silicon so it doesn’t stick to itself or anything. i might try the vinyl way but how do you get a truly accurate pattern if ur lifting it up then putting it down then drawing the seam that’s the part iv never understood

you just remove where the skewer is and draw your line then put it back in. Also if your making enough relief cuts you should be able to find your sharpie line on your foam then mark your vinyl accordingly.
Also the whole reason you use scrap material to make patterns is so you use less material of the one your using, If you have excess material then sure go for it and use it but not a good idea if your using expensive leather

Gjudd
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Gjudd
Post Re: Pattern making
on: July 13, 2012, 09:23
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I use the skewers method like bpmt, there's a good reason for it..... The panels can be stretched out so thay take the shape of the seat, once all the panels have been "pinned" to the seat then point them, when you machine the cover up you may notice you need to pull one side to get the points to match, the result will be a cover that falls on with no heat etc

A good example of this is a 911 bolster repair, try matching the cover without the stretch!

straight-
stitch
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Post Re: Pattern making
on: July 16, 2012, 02:30
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For people using the clear vinyl...what gauge should I order?

blm
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Posts: 26
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Post Re: Pattern making
on: July 17, 2012, 03:15
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What method would be the best for a newbie that is trying to say recreate a new cover from a worm oem bucket seat cover?
1. Remove cover and disassemble entire cover to make a pattern for new cover.
2. Remove old cover and make a pattern over the foam using clear plastic or vinyl and a marker.
3. Use plastic or vinyl over the old cover with pins and a marker.
4. Something else

Naseem-
Muaddi
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Naseem Muaddi
Post Re: Pattern making
on: July 17, 2012, 04:28
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I like method 3. Keeping the old cover on will keep the seats structure and give you a good idea where your seams need to go. Just remember if the seat is worn, the centerpoints on the upholstery may be off. So mark your centerpoints from the frame. Also, the seams maybe high or low, so you may have to correct the seams with a sharpie.

If the cover is in real bad shape then do method 2.

Brent-
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Brent Parker Motor Trimming
Post Re: Pattern making
on: July 17, 2012, 13:39
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yep number 3 for sure! Naseem couldnt have said it any better than he has, check your old cover and centre up again and adjust accordingly. A little tip for the newbies, as long as the driver and pass seats are identical I will always try and mark out on the passenger seat cos it wont be as worn

tinabanana
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tinabanana
Post Re: Pattern making
on: July 17, 2012, 13:48
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when making a patern for a cover for a seat with new foam or custom fabricated foam, do you have to shrink the patern a bit since the foam is uncompressed?

Brent-
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Brent Parker Motor Trimming
Post Re: Pattern making
on: July 17, 2012, 21:04
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shouldnt have to if you pin it to the job, by pinning it tight you should be compressing it already.

Naseem-
Muaddi
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Naseem Muaddi
Post Re: Pattern making
on: July 18, 2012, 00:49
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Quote from Brent Parker Motor Trimming on July 17, 2012, 13:39
as long as the driver and pass seats are identical I will always try and mark out on the passenger seat cos it wont be as worn

I agree, the passenger seat is almost always better to make your pattern from.

blm
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Post Re: Pattern making
on: July 25, 2012, 21:16
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I've got a follow up queston if I may. Lets say I am making a pattern for the main face panel on a bucket seat and that main panel has some sort of design created just by top stitching. Lets say the pattern is six large diamond shapes incorpoarted within the main panel.
What would be the procedure for getting to the final panel size? Would you cut that panel somewhat oversize and then go about top stitching in your diamond patterns? With that complete go about cutting the main panel down to its correct size?

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