Sunday, November 7, 2021

Hammerli Palm Shelf Addendum

Most of my airgun projects are driven by the need to solve perceived problems or annoyances.  I have a lot of air pistols with anatomic target grips and I've noticed that the palm shelves on some guns will occasionally move slightly unless the mounting bolt is pretty tight.  I wondered if there was a way to lock the palm shelf in position without resorting to cranking the bolt to the limit of torque.  To be sure, some of the guns can benefit from tightening the clearances between the main grip and palm shelf.  Others, not so much.  Anyway, here's a quick modification that I found beneficial.

















Came across a few 3/8" diameter rubber discs. 
















These are 1/8" thick.














I milled two 0.375" diameter pockets about .100" deep on the inside of the Hammerli's palm shelf.  A pocket on each side of the mounting bolt.






 











The rubber washers push in and barely stand proud.













The amount they stick out is adjustable by cutting to different depths and/or shimming















The shelf now locks in place at substantially less bolt torque.  Roughing up the rubber discs with some sandpaper would've probably also helped.


More soon.



Saturday, October 23, 2021

Match Grips for the Hammerli Master -- Part 4 Final

Wrapping up the grip project. 

 

Part 1

Part 2

Part 3

Still going...















Needed a simple nut to hold the palm shelf.  Made this from a scrap. Also made another screw cup for said shelf.




Almost done with the shaping.















Some final fit adjustments.



















Then it was time to finish sand.  Took the grip to 320 grit.  Plenty good enough for me.


















Had good luck with this in the past.  I like that it dries to a hard finish. 


















The grain on the bubinga is gorgeous.




















The padauk took on a deep red color.




















I think I forgot to show the final shaping for the palm shelf.  Some angles and edge breaks.


















And just like that.  It's done and ready for installation.  Only took me a few years to get around to it!





























































The palm shelf color contrast is a nice touch. 

















Just hanging out with a few pals.  


I made a long list of various projects that I'd like to attempt.  At the moment, Kathy and I are repainting a bedroom and all the furniture is displaced to the garage and basement.  Not the week to run machines and make metal chips or wood dust.  Bear with me as I get there.  I thoroughly enjoyed how this turned out.


Thanks for following along.  More soon.




Thursday, October 21, 2021

Match Grips for the Hammerli Master -- Part 3

Part 1

Part 2

 

Picking up where I left off...















Mentioned previously that the bubinga board was a bit on the small side for an adjustable grip.  Elected to use a piece of padauk for the palm shelf.

















Rough cut.














Back to the mill and cut an adjustment slot into the grip.




















And the palm shelf gets a mounting hole.


















Which also gets counter bored.  Here, I used a 4 flute end mill.















Didn't like the mock up.  The heel of the grip needs to extend rearward almost an inch.


















Would've cut it that way at the start, but did I mentioned the board being small?  Found a cut-off from the initial shaping on the scroll saw.


















A bit of sanding and shaping until it fits against the heel.


















Like so.



















Epoxy and a clamp.


















Almost sanded flush.


















Much better.


















Found a small crack when I sanded the bottom of the grip,



















Let the glue wick into the crack and saturate the wood.


















A couple applications over half an hour or so until the crack was overfilled.  Sand it flush later















And re-cut the back of the palm shelf.



















Almost done.  

Should have the final installment posted in a few more days.