I posted this at the LF photographers site and I thought I would post it here also. I got this idea from Tri Tran when we met at the Disney concert hall for the ULF shootout. He gave me the idea for an adjustable flange with a filter holder for a front mounted Packard shutter. I have to get the T-nuts that screw in so when I tighten everything down it does not pull out. It is not that hard to make. I do need to make a sock type thing to cover the back of the lens when I use one that is smaller than the diameter of the opening in the Packard. The nice thing is that I can use this for all of my 8x10 and 8x20 lenses.