bkemp

I've been covering a few books and have has a small case of this before but not the bad. The wrinkles form when the cover is folded back on its self. When laid flat you can feel where it has wrinkled. I suspect it is happening because the leather has to have somewhere to go. Can this be prevented by applying the leather with the page curved open like in the picture? This would make sense to me since the leather would stretch a bit when in closed position. Anyone have any experience with something like this? Thanks!

Ahh, that makes sense how it can be closed and pressure applied so easily. I may be modifying my block with a wedge or take 1/2" out if it's too difficult to get it clamped. The clamp position is nearly identical to yours. Thanks again for you help!

Thanks for getting those measurements! Just for clarity, the gap is 60mm with no tension? If not, could you please measure the block between the arms at the bottom? That would get the measurement with no tension. The measurements on mine like it sits: 38mm no tension. 32mm closed. I am looking at the yellow spring that is 16x8x45mm. Thoughts?

Really like this modification! Thanks for sharing in detail! Can anyone tell me the inside measurement of 2 clamp arms or the block at the bottom on this specific pony? I made a homemade pony and would like to add the spring. What I really need to know is how much longer the spring is than the gap between the arms. I can calculate this once I know the space.