Hi- 1000gsm is not very thick. Some years ago I was working on mast laminates of 25-30mm thick of carbon infused. Thats thick. So 1) the big problem with carbon is that the UDs often don't infuse well. But it seems some of yours does so maybe another problem. If you hold the UD up to the light can you see through it? If not probably not the right UD for infusion. Check with your supplier and ensure the UD you have or going to have is being infused by someone 2) Dry spots are lack of vacuum.. was the 0.93 bar in the bag at the furthest part away from the vac side of the job? or at the pump?  Then vacuum decreases through the fill due to outgassing (which if you degassed right won't happen). The advice about slowing down the fill is very good. Clamp the inlet so it flows quite slow, allowing the bottom and top to fill together.  Plus use a slow medium. And lastly did you have enough resin? Did you have resin left in the pot and lines?

Nearly 10 KG of resin goes into the part. 2/3 of this is infused fairly quickly and then a second batch is mixed up and lasts until the end of the infusion. Pot life in my workshop (18 degrees) is around 2 hours (xtra slow) assuming I don't heat the resin. If the resin is warmed and the viscosity reduced then the infusion is sped up, but at the cost of a shorter pot life. I also use 2 seperate large containers to feed the resin which obviously helps to avoid any sort of exothermic reaction.

3 hours!? How long is your pot life?? 

Maybe I can help as I've just been infusing a chair core which is a 7mm hit in one go (650 gms CF either side of several layers of quadaxial e-glass). Use a slow mesh and make sure you allow the resin to continue into the part for a while after it's reached the MTI hose. For me (on a 1.5 m2 360 degrees shape) the part wet's out in around 45 mins but isn't at a reasonable VF for a cosmetic part until about the 3 hour mark. This is with a very slow mesh/ silicone peel combination (Compoflex SB RF3). This seems to work every time now but the first time I was having issues like yourself. 

Jeez, and here I am tossing up between cutting my fabric at 600mm and risking not covering the entire part or cutting it at 610mm and wasting excess

Thank you all so much for your replies, really appreciate your advice. 

As already said, UD and the overall thickness is slowing things down.  The core will also slow things down.  Therefore you must slow your resin down and if necessary use a slower hardener to give you a usable pot life.

Biaxial cloth infuses ok when done slowly as there are still some gaps, pure UD is very hard to infuse.

Cutting down the excess fabric will save you a lot of material waste and resin waste. Also it means the resin has less distance to travel which is always a good thing.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

As mentioned, that's quite a thick stack, slow that sucker down.

As above, that's a large stack to be working with, slow the resin right down and give it a chance to soak through. Resin doesn't flow vertically through ud/borax as well as woven fabrics so that won't be helping

Yeh that's a hugely thick laminate for infusion, especially when it is 95% uni. You would need to slow the infusion right down, and I would probably double up on the infusion mesh.