I'm very pleased with it so far. I have now completed the upper plate which has worked very well, providing support for the foot of my 70-200 and 100-400 lens. I'll post a picture tomorrow.
The cutting was quite reasonable as it was a guy I use to use years ago to cut armour, glass and many other things. This was also helped as I produced all the drawings so he only had to convert the drawing file.
I am pondering putting some C brackets on eBay as they might be of interest to those who already have clamp blocks, this is assuming people are willing to drill a mounting hole as these will differ from syste
To system. I anticipate a pair of brackets would be around half the price of the full C brackets available. The nice thing about the flat plates is you can locate them as per the photo or split them to make a cage. I put my brackets in front of the camera so I could still use to fold out screen but for a 5 or 7D it would be good to put one in front and one behind.
While the spacer plates are great for those who want to use the Manfrotto quick release some drilling and tapping is necessary to mount the clamps. I could do it as a complete unit but the price might be prohibitive as the small quantities would mean each one would be made to order.