Stronger Clamp Pads

These are a stronger version of my original clamp pads.  These stronger pads have a slot for a coin which distributes the clamping force more evenly, so it doesn't crush the pad.  And, these are sliced with 100% infil and three perimeters to better resist crushing forces.

There are versions at each scale from 100% through 150% by 10% increments.   I embossed them with a percentage to help keep them straight.

I found that a US nickel fits the 120% version perfectly.  It doesn't slide out.  If the coin you have slides out, wrap it in a layer or two of painters tape so it doesn't fall out.

You can scale them to any size you need in the slicer.  You can scale them to make them thinneer to accommodate different sized coins if you wish

They're designed to be printed on their side with the slot vertical.  That way they don't need any supports.  

To install, choose the size that you can't quite push on with finger pressure.  Insert a coin into the pad, with tape if needed so it doesn't slide out.  Then use the clamp itself to drive the ball end of the screw into the printed clamp pad.  It should go past a point of high force and then be completely loose.  That means the ball is inside the clamp's cavity.  The clamp pad should move freely so it can accommodate a slight angle. 

Optionally, you can install without a coin.  It won't hold up to as much force, but for lower force applications this will work fine.

It is designed not to leave an edge mark in wood being clamped.  You could lightly sand or file the flat face and the chamfer edge around it for an even smoother clamping surface.

You could also print these in TPU, in which case you'd want to use a smaller size so it stays on the clamp.  It might not move loosely, but it will move into position when clamping things.