@Dan, I've been using a lens cap as a shutter. Works just fine with the Arista Ortho Litho 2.0 (ISO 6) I shot on. I'm on the lookout for a shutter though and I may just build a basic one.
@ozphoto, Thanks, this was my very first woodworking project and I say look into a build. It's a learning curve but doable.
@momus, That's a really good suggestion, pretty sure that it will square off everything nicely and make it all more stable. Those bellows took me three days to make.
I've attached a photo taken with the camera. Arista ortho litho 2.0, 4sec exp, f11. Developed using highly diluted Ilford ID11.