Fabric seaming

Do any of the pro’s know how to get the seen side of the fabric to “butt” together. I’ve seen guys butt together texalium and carbon with a perfectly straight line.

Any thoughts?

I too thought the outer edges were just tinted… you can see the yellow weave thru the tinted resin if you look closely. Just my opinion.

i’m starting to agree that the black, carbon looking part is too yellow in places to be straight carbon. It is likely tinted but hte weave is in 45 degree oposed form where the color changes…

C’mon Dual Twill, I KNOW you’ve done the V pattern on the CF hood frame! AND you’ve mixed fabrics on that spark plug cover. Let us newbies in on the secret:D

on the spark plug cover I put the kevlar in first and then just folded the material and used tach spray to hold it down. Then I just put carbon over the whole part. The V hood the fabric does not completly match up. I did the same thing with folding the fabric and then laying over the top with another layer.

You can get V’ed fabric already made. I just don’t know where

interesting, i’ll have to look into this pre-ved fabric. So when you say you fold the cloth over, i’m assuming you fold it underneath the nice side and then bag it. How do you avoid bridging in that spot since the fabric is reasonably stiff?

Back to this tinting thing again…the fabric isn’t wet out in two different places is it? There would be no way to keep the resin from bleeding over the desired “cut line”, right?

I’m guessing this part was infused or wet layed up with clear, let cure, masked and then wet up with tinted resin. Sound about right?

Seems to me, getting the tint just right must be pretty hard.

Anyone know where I can find more pix of this or similar hoods, aero parts?

Doing a search on google for “kevlar carbon fiber hood bmw” gives too many results.

maybe im retarded lol but where you guys seeing tinted resin?

are you guys tring to say the black is tinted? It is plain weave carbon not black tinted resin

Here is the front lip they did as well

The hood is manufactured by vorsteiner. They do not offer this as a normal part this was for a sema car only but you can get the full hood in carbon for around $1800

Thanks for the additional pix. So back to my original question…how are the fabrics arranged with respect to one another? Butted/overlapped?

hey, it looked kinda tinted to me :smiley:

Back to square one.

i could see how you would think that but if you look in the upper left corner you can tell it is a plain weave fabric

I still say the hybrid is just the first layer, cut out perfectly somehow, and then the rest is just carbon on top of it. Why go through tons of work trying to butt the carbon to the hybrid, if the whole thing is going to be many layers of carbon anyways.

The way I go about this is to work from the outside in. I lay the CF first and be sure to keep the edges from fraying. Then I lay the C/K in the slats overlaping the CF outer edge. There is never a seam along the material boundry. Folding the CF back on itself works for a nice even edge but the folds have to be really large to keep from trying to stand back up.

HTH

CCE

my folds are usually only about and 1\8th of an inch of excess on the fold. From what I remember the from seeing it, the carbon was laid first cut to what they needed it then the kevlar was laid second overlaping the carbon. You could tell from the cut lines that the carbon was laid first.

Is there any reason, if you wanted an inlay of a different type of weave, that you couldn’t lay up in the mold the alternate weave piece, just enough to make that. Then take it out once it has cured, clean up the edges, then place it back in the mold, then lay the main weave over top of it, and cure it again?

Where would you fold the CF if you were to do this kind of job? I’m not understanding the process.

At the boundry of the two materials the first sequence of fabric (in this case the CF) would be cut oversize. I would cut it an inch oversize but Dual Twill (I think DT and please correct me if I’m wrong) would cut it 1/8 inch oversize and fold the CF back from the center and tack it down with resin or adhesive spray. Then lay in the C/K overlapping the folds by 1/2 inch or so.

CCE

Thanks CCE,
So, something like this?