Yeh by all accounts those are excellent solutions too. Haven't tried them personally, I always find it easier to just infuse from the sides. Probably more worth it if you're doing a production run on something where central feed would really be beneficial. I can certainly see the advantages, especially if it was then combined with the MTI system as well.

Do I risk any print through if I pice several bits of infusion mesh together with overlaping joints between pices?  

iI did not have time to do the baging and vacuum drop test yesterday.. I am hoping for better luck today..

It can be, if you got a very thin laminate (like 1x240g or 2x100g) and a thicker flow media and you got a really tight resin management. But usually no, there will be no print through.

In this case I got 4 layers at a total of 1300 grams/sqare meter..

I made all the layup and set up the vacuum and feed spirals to long edges. I discovered that my vacuum bag was damage when packed .. The metal staples used when puting the package together punshed holes through most of the bagging materials.. Just enough of the inner part of the roll could be used to cover my mold.. But I was not certain and it was a pain to have that in the back of my mind looking for very very small vacuum leaks.

I got it seald now anyway and did a vacuum test for 24h. I let air in and gave it vacuum a few times and in between pushed all the layers in the corners with a pice of cardboard . I hope that is enough to make sure there is no bridgeing.

If I have time i will do the infusion toknight.. More pic:s will come.

How long would be a good time to clamp the epoxy resin of after I clamp the vacuum????       30sek?

On a part that size, I'd leave it at least 1 or 2 minutes. It will make minimal weight difference but all the difference to the surface finish.

Alright..   It is infused..

I mixed up 3400g in 2 batches.. I waited with the second batch a bit to see how fast the first batch infused.  After a while I put hardener in the second batch and mixed it.. I clamped the feed and vacuum of when I let the second batch degas 1 or 2 minutes..  I added the second batch without letting air reach the feed hose.  I was soo exited and I thought it went so well.. When I got about 1,5dl in the catch pot and and I didn´t see any air going to the pot I clamped the vacuum off and let the resin feed flow for two minutes.
When I closed the feed I discovered lots of small air bubbles near the feed spiral hose in the infusion mesh.. 

I panicked and added vacuum again and opened the feed..  I ran about 2 dl more resin to the catch pot and closed the vacuum again.. I noticed that the feed was kind of slow now and I still got small small air bubbles as before.. It was a little better but not gone.. I waited three minutes before closing the feed this time.. To  words the vacuum source there were no air bubbles in the infusion mesh.. Maybe it was closing the feed during the infusion half way that caused this??

Before I started I did let the resin sit for a while and degas 1 or 2 min.. It wasn´t 100%  bubble free but pretty good I thought... I did the vacuum drop test for 24h and I still had full vacuum. So I can´t see that I had any leaks.. Maybe..  just maybe the spiral hose punctured the vacuum bag somewhere but I could not see or find it if it did.   I used Easy composites infusion epoxy with only slow hardener. I used the same hose for the vacuum and feed.. a 5mm inner diam hose.. Could a too small feed hose cause this problem? Can resin race through the mesh and trap air behind the infusion front that is stuck in the carbon layers?
I will do the post cure not tomorrow night but the day after that so It will cure for about 36h before I start the post cure process. I will demold after post curing..

I so so hope it is normal with small air bubbles in the infusion mesh after it has been infused.. What do you say? If not what do you think I did wrong?.

Edit: Added some more thoughts..

As long as you haven't got any leaks then don't stress, it will come out fine. Little bubbles like this are totally normal, it's just tiny air in the resin expanding under vacuum. For the most part, these get trapped in the flow media and never show up in your laminate - you may end up with a pinhole here and there if it was especially airated resin. Certainly nothing that will ruin your part. 

Leaks show up in a different way. You will get large air bubbles showing up in a stream, and then after clamping the vacuum line you will see air tracking it's way across the part, forming patterns sort of like tree branches.