I recently bought a palm rest casting from Westerner and in due time managed to finish it (my terms – it’s functional), a lot of projects in my world are “finished” when they reach the point that they are usable not necessarily polished and look pretty – that’s over-rated and I save that effort for the paying jobs.   The casting that Wes sells is really a good deal and if you have any mechanical aptitude and ambition - need a clamp on style of palm rest - contact Westerner and see if he has any left.  (he did not pay me for this little bit of nudging or give me any discounts)   
The issue that led up to the build I’m writing about coincides with the problem of me “half finishing” my projects.  It deals directly with the size that my forends on these rifle builds tend to be… large.   Usually too large for the casting that Wes offers.   Eventually I whittle the forend wood down to the shape they need to be but it’s never a high priority on my list – many of you have seen my patented process I use for forend retention – the black innertube bands, heck I rarely get the screw in place so why would I finish the wood.   
The build.  I dug through my scrap bins hoping I’d find some brass that would work to make an oversize saddle part for another palm rest but the closest material resembling brass this size in my mess was some Aluminum bronze, besides being expensive it‘s difficult material to work.  I’d saved a couple of welding rod cans of brass shavings from a recent job – with the idea I’d fire up the foundry, make a pattern, ram up a mold and pour a few… that’s a pipe dream with my current schedule.  So here’s where I went.  There was a piece of 2.25” stressproof (1144) being kicked around the rack.  For those that don’t know, in comparison to a lot of the materials we work with, this stuff is pleasant to work with, finishes nice, so off I went.  I chucked this up and started whittling.  As the photos show, I had a visual pattern so beyond that, I have no drawings and couldn’t tell you a dimension except that the bore of the yoke is about an eighth inch larger in width than the cast one.  The pin for the pivot was reamed to 3/16” and the cap screw holes are 1.875” on centers drilled and tapped for 10-32’s.   

Nice work as always. Thanks for posting.
Flatlander

That's really nice Greg! Wont take much more to be a highly finished piece!

Nice work! I learn alot on this forum !  Now for the guy that doesnt have the equipment ,Westeners  rough casting is the way to go. still waiting to see one of his completed...anyone got pics?

There were a couple of folks that did finish theirs maybe they'll share?  Jerry should have one nearly done, maybe he'll post pictures of his on here? 
Pete,
Here is the link on my build from Westerner's casting

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a lathe makes this project a much easier operation with a file and lots of emery paper.  The link between the two parts and the wood are the only other parts one will have to make.

Greg