infusion trick to getting this effect

Hi guys what infusion trick do you use in order to get this effect when infusing 2x2 twill. thanks

2x2 twill.png

The fibre looks to have a very flat effect which typically happens with autoclave carbon. Lots of pressure!

But it also looks to have gaps in the weave without resin? or is that just the picture?

Hi Fasta, i came across this on the following link
https://www.facebook.com/ocarbon

I saw the link. I thought it looked like it could be autoclave since the you can see how flat the fibre looks but it does not appear that OCarbon uses an autoclave.

He does really nice stuff, I would love to know more about his techniques for wrapping and finishing. I see there is often a foam backing/mould or something when the parts are wrapped and bagged??

Infuse it then wetsand it IMO .

Yes he does some great stuff,I have done wet layups in the past and i was able to get the same results as his bit i just dont like the way the carbon looks on wet layups as compared to the results you’d get when infusing more especially the squarish look on the fibres, i just love that. May be one day OCarbon would be willing to share the technique.

Hi HCD, i just took a closer look and I think I will agree with you.

To create this kind of effects you have first create excelent mold without applying any PVA, 2nd to apply the carbon fiber directly without any gelcoat and finally you need a very strong vacuum system, like the one that sell michiel http://www.compositescentral.com/showthread.php?t=9323

I have already edwards 12 and 18 and I create parts exactly like this.

Now in case that you interesting to have nice surface, then just apply after a gelcoat through airgun :stuck_out_tongue:

thanks a lot George. so it will be very hard to pull this off with a regular 2 stage pump :slight_smile:

I think yes :o

I don’t think the majority of his parts are infused. Rather 77 sprayed or glued to existing parts. Carbon is trimmed with a pen knife and then wet out. Wet sanded and then gel coated.

The foam is used to keep the bag from breaking the tabs. And more than one part can be bagged.

The difference between a 29.5" and a 25" pump won’t be that much differnce in the flatness fo the weave. The best bet is get a calendered fabric, use HIGH pressure (and then clear coating after), or maybe rub the dry fabric down REALLY well on the mold. Also, debulk 10-20 times (pull vacuum, release, pull again, rub, release, pull again, etc etc etc…)

I follow OCarbon on IG, and I’ll ask what he does

He said that he just uses quality fabric and a good pump. shrugs Doesn’t help much.

The secret to success is keep it a secret right? Lol

I’m leaning towards him bonding the fabric with a light coat of adhesive and essentially de bulking dry fabric over that. Then wetting it out. Wetsand and gel coat. Very nice work non the less.

A perfect infusion will get the same result. This typically happens when you get a high VF. Mostly an indicator for a high quality part.
Wet sanding and then clearcoating will not look that nice because you destroy some filmaments wich will result in a not so shiny result.
Infuse with MTI hose, place the resin pot about 4-5ft below the part and you will get that look.

thanks DDCompound, I will definitely try this out. @ the moment i’m still struggling with adhesive sprays which end up degrading the surface quality of my parts, I think @ first I was applying too much on the cloth :frowning: