today i tried cutting a 1" diameter nd filter from the wratten gel. what a pain! it didn't come out well at all. took a long time with nothing much to show for it...a real cobjob. i have already made a custom holder for a 1.5inx1.5in piece of wratten gel that came out ok but haven't had a chance to try it. still have two 1.5" square pieces of wratten gel left over to try again. a real exercise in frustration! i hope the new "polar pro" nd set hits the market soon. if anybody gets those filters, please post your opinion of them to the group asap. thanks.I would be interested in the process you used to make an ND Filter out of the Blank Ring. You interested in doing some kind of write up?