I was considering buying a sheet and cutting my own carbon drag washers.  Is there much weight savings in this?  I would imagine replacing 2 stock washers with carbon washers there could be significant weight savings...maybe close to 1/2oz.

 DVT, do you have any idea on this?

Carbon washers are not meant to replace metal drag parts, they replace fiber drag disks or worn PTFE drag disks that go between the metal parts.  No, you won't save any weight.  But you would probably end up with a better, more reliable drag system if used as intended.

What he said ^^

 

You replace the felt...not the metal.

That's right. The fiber washers are what's replaced by Carbontex drags. They are especially good when replacing the Dartanium washers in Shiamno's. Even some reels with stock carbon drags benefit from the Carbontex's tighter weave and surface texture. A drag upgrade is a better bang for the buck performance upgrade than spool bearings in most cases. 

I bought a sheet and made my own, much better now. Also you can polish the washers where they come in contact with the disks to a mirror finish with a very fine jewelry polishing xompound to improve tour drag oh and the inside of the main drive gear that houses the drag stack,polish just the surface the stack sits on...and i agree with mike, much better bang for your buck compared to bearing upgrade...