SIGforum
Adjustable Cheek Rest Experiment.

This topic can be found at:
https://sigforum.com/eve/forums/a/tpc/f/630601935/m/7300009964

May 06, 2020, 07:58 PM
Ken226
Adjustable Cheek Rest Experiment.
Myself and a friend were talking about adjustable cheek rests on rifles. I've never used one, and all his bolt action rifles have some kind of taped or glued on riser to serve the role.

So, we decided that there are several drawbacks to the common types on the market. 1. They have to be either lowered or removed to use a cleaning rod. 2. After cleaning, they have to be readjusted to the same height as before. 3. In many cases, they have associated knobs or other hardware sticking out of the stock.

I wanted something that avoids these issues, and is fairly unique.

Heres the design we came up with:

I turned some aluminum bushings, and pressed neodymium magnets into one end:





Then Drilled into my my Manners stock and epoxied the pillars in place:



Next I solid modeled the cheek piece design we came up with, in CAD. Its intended to be cut out of a sheet of 1/8" aluminum plate using a CNC mill, then folding using a brake. The final rest:

<a href="https://postimg.cc/PLCMQDNT" target="_blank"><img src="https://i.postimg.cc/CKN6YHgB/Folded_Cheekrest_1.png" alt="Folded_Cheekrest_1"/></a>





Then a flat model, so i could generate code for the actual CNC cut:





Next, we loaded the plate into the mill and made the cuts and used a press brake to create the folds. The pillars in the cheek-rest were turned on a lathe, threaded for adjustment screws, then pressed into the cheekrest, fixtured to maintain alignment and tig welded in place from the top. The welds were then machined flat.


Adjustability will be via two steel socket head screws threaded into the bottom of the pillars. The screws are dabbed with locktight, then threaded in or out to your desired height. Once set, it will retain that setting until you decide to change it. When the screws are threaded all the way into the pillars, the cheek-rest sits directly on top of the stock. There's about a 1" range of adjustment, because i used 1" long screws



Cerakoted in Mil Spec OD Green:








The finished product:



The cheek-rest simply slides into the stock via the 2 aluminum bushings. The neodymium magnets in the bottom of the bushings grab the screw heads and hold the cheekrest in place. Its quick to remove or install, and always goes back to the same adjusted height. The whole thing ended up weighing 4.6 oz.









Unfortulately, im not an artist. My camo job kinda sucks. The green and black seem to match up ok, but the tan is way off.


So, my final takeway:

It feels great. A much better cheek weld, and easier, quicker re-positioning of the eye, in the scopes eyebox. I didn't know what i was missing all these years by avoiding the adjustable stocks.

Yea, theres definitely a reason to get and adjustable cheek rest.
May 06, 2020, 08:11 PM
CPD SIG
Looks good!
The only thing I’d change is sand down the paint on the cheek rest. Might get a little uncomfortable with the recoil.


______________________________________________________________________
"When its time to shoot, shoot. Dont talk!"

“What the government is good at is collecting taxes, taking away your freedoms and killing people. It’s not good at much else.” —Author Tom Clancy
May 06, 2020, 08:44 PM
Ken226
I'll find out this weekend.

It's a 6.5 creedmoor, so there isn't much recoil. But, if it bugs me, it will be easy to beadblast and re-coat with something smooth.

I like your signature line. Tuco?
May 07, 2020, 12:12 AM
wildheartedson0105
That is very ingenious. Nice work!

The camo color looks fine. Only thing that will see it is your cheek. Wink


_________________________________________
Dei. Familia. Patria. Victoria.

Don't back up, don't back down.
May 07, 2020, 07:36 AM
P250UA5
Nice work & a smart solution to the issue.




The Enemy's gate is down.
May 07, 2020, 12:26 PM
CPD SIG
quote:
Originally posted by Ken226:


I like your signature line. Tuco?


Yep.
I'm not much of a "regurgitate a cliche movie line as an axiom for life" kinda guy, but that line is so true.


______________________________________________________________________
"When its time to shoot, shoot. Dont talk!"

“What the government is good at is collecting taxes, taking away your freedoms and killing people. It’s not good at much else.” —Author Tom Clancy