Hi guys,
Ok, so I have done successful infusion with divinycell before however couple things are different now, so i am asking to see if I am doing everything right since this is a big piece and cost me a lot if i mess up:wacko:
factors that are different this time: 1st: I am using 12K, 19.7 oz twill carbon fiber, the heaviest I have used before was 3k , 7.8 oz.
2nd: this piece is much larger. I have infused 2x6 feet flat sheets before but with no core!
SO the schedule is :
glass
12K carbon
foam (1/4" divinycell, edges are beveled)
12k carbon
3k , 5.5oz dual twill carbon kevlar hybrid
peel ply
green flow (unfortunately it moved a little to the right)
bag
I perforated the core, however i think i went a little too crazy on it. there are holes every inch in cross pattern.
Please look at the pictures, I also put a link to a video on youtube of the whole thing ( http://youtu.be/UGmBm6W9yFo). I am using MTI Hose, vacuum is stable at 27.5 in hg and I will leave it under vacuum for at least couple hours before infusing.
My questions: Am I doing it right? anything I should change?
how much resin do you think I need (it is 72" length and 21" at the widest part) I got about 100 oz left. using adtech 820
Thank you
Bryan
Hi, everything is fine, also the holes in the core material are not too much. But let the flow media end before the core ends so it is a little more safe that the lower layers can be wetted out completely.
But it should also work like you have done it now. I have often infused by this way. It is eaysier to get a perfect surface if there are a few mor layers of fabric below the core material, but if your vacuum is good, your resin degased and you use the MTI hose it will work.
thanks dominik,
what kind of fabric did you mean here? “It is eaysier to get a perfect surface if there are a few mor layers of fabric below the core material,” I was planning to add a light fiberglass between the cf and mold to hopefully avoid little pinholes i get here and there. is that a good idea. by the way MTI is a life saver, few weeks ago i “forgot” to bevel the edges of the foam and got race tracking but the whole piece still got fully wet out.
by the way that was the last piece of my MTI so where can I order it now?
Thanks
Just write me a pn how much you want, dpaine has a stock so he can ship it very fast.
I would not use a light glas layer. Most times there are more problems than without. Degas your resin and if you want a perfect surface feed a little more resin, that helps to get no pinholes.
Before apply all the materials, are you first apply gelcoat on the mold? or is just direct the cf? If direct CF then it’s obvious that you have pinholes. All proccedure and resin (cover whole thing) is fine.
You won’t have pinholes in the surface if you work correct and use the MTI hose! No gelcoat needed.
I am not using gel coat and I have been successful with smaller panels with no pin holes however this one is much bigger:confused2: I sent you a pm dominik.
For the large panels usually have some pinholes.
All this years I make a lot of infusion panels and in the large areas I have pinholes, not many but some. Of course I didn’t use the MTI hose, might need to make some parts with this material.
Do you know anything about this site: http://www.hp-textiles.com ? I just make an order.
Honestly I am very - very curious to see the results 
if there is no pinholes, then this people they will be my suppliers.
Good vacuum, degased infusion resin and the MTI hose and there will be no pinholes. I often make panels of 1000mm x 2000mm x 2mm and I never has pinholes. Take a look at the MTI hose thread or in the carbon finre ramps thread in the showcase.
well George, i guess you have a new supplier. 
So I infused the panel yesterday, degassed the resin and it took 60oz of adtech 820. It took about 45 min to fully infuse. you can see the progress in the pics… as you can see not much progress between 20-30 min that is because I ran out of resin so I had to clamp and mix some more and degas that as well. and the result, well i had a on my face when I opened the bag. absolutely perfect finish, not even one pinhole,. Thank you Dominik for awesome product and advise as usual.
Now I have a question… I use freekote 700 and it leaves some streaks, how can i get rid of that? I am going to clean an reapply the freekote again since I learned how to better apply it without leaving streaks but how can I get rid of it on this part?
Thank you again and again and again
Damn looks good. I have already order 10m of this product to check it.
I will be very happy if I stop to use the geal coat with this products.
One question, do you heat this panel? or just with room temperature? is it strong ?
The panel looks great, but the pictures are awful. Are these Iphone shots?
ahahaha Seems someone not like iPhone.
trust me george, once you use MTI you will love it.
I do not heat the panel just room temp. and it is pretty stiff.
IPad pics herman here are some better pictures after cutting… with a real camera.
Looks very good!
Ipad/Iphone/Smartphone pictures seldomly look good. They just lack a big lens, have too small a sensor, and the phone software immediately stores the picture as JPG with an awful compression rate.
But the most important thing is that you have your panel! Well done!
Thank you Herman. You and dominik have helped me the most and SO MUCH here and I am very grateful for all your help. It means a lot to me. here is the finished product.
does anyone have advice on using q cell in large batch mixes of polymer resin and marble dust?
Better to split this message from this thread. (and delete my message in the process).
I will respond in a new message.
Hi Crazywork,
What do you want to achieve? Q-Cell is a relatively soft material, but it can help making a pourable mix. You refer to “polymer resin” which I presume is polyester, to make some sort of polyester concrete?
What kind of product are you making?