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Air Gun Home Forum Index » Airgun Smithing » Cheep Peep Goto page 1, 2  Next    View previous topic :: View next topic  Cheep Peep   Posted: Mon Dec 31, 2012 8:49 pm radar Silver Status Member Joined: 13 Nov 2011 Posts: 1138 Location: Des Moines, Iowa, USA Here’s a fun little project. I decided to make my own fully adjustable, low profile peep sight to fit any B18-19 type. The rifle will need two tapped holes for mounting it near the rear of the receiver, however. It’s basically just a simple ramp-type open sight design with rudimentary screw adjustments for windage and elevation, but with an aperture instead of a notch. The idea was to make it simple and rugged, and low profile so as not to snag on limbs as much as a “blocky” target type peeper. Of course, it mounts toward the rear of the receiver and the regular rear sight is removed. The front sight may need height modification as well. No loss there, as the big, wide block of plastic that passes for a front sight is nearly useless beyond a few yards. The aperture, or “peep block” and the base were cut from quarter-inch thick 6061 aluminum plate. The “sight spring,” which allows adjustment, was made from an old hacksaw blade. I re-tempered that after bending to keep its springiness. My apologies for the mixture of metric and imperial units of measure in the drawings, but metric screws were best available and the raw materials such as the aluminum were all in inch size stock. Cheers, Rob Complete sight Base top Base bottom Base with spring Sub assembly without peep block Peep block front Peep block back Full sub assembly, unpainted Drawings (Not proofed, so I apologize for any errors they may have.) _________________ It's never too late to have a happy childhood.   Posted: Tue Jan 01, 2013 2:43 am cjs Member Joined: 02 Jan 2008 Posts: 62 Very nice project!   Posted: Tue Jan 01, 2013 5:33 am Alstone Moderator & Site Supporter Joined: 01 Mar 2007 Posts: 4139 Location: Linconshire, ENGLAND Good idea Radar and great drawing schematics. Al _________________   Posted: Tue Jan 01, 2013 10:20 am radar Silver Status Member Joined: 13 Nov 2011 Posts: 1138 Location: Des Moines, Iowa, USA Thanks fellas. I'm going to try to mount it today. cheers Rob _________________ It's never too late to have a happy childhood.   Posted: Tue Jan 01, 2013 12:12 pm robert w Senior Member Joined: 12 Feb 2012 Posts: 574 Location: usa i like the looks of it. can you get windage adjustments too? _________________ ,crosman 400,gamo big cat in .22, diana 5g,diana 54 air king, diana 34 in .22 diana 34 in .177, wilrauch hw-55,and a romainian pioner training rifle , and a huge collection of powder burners 35 last count . 1 would think i have a gun store   Posted: Tue Jan 01, 2013 12:39 pm radar Silver Status Member Joined: 13 Nov 2011 Posts: 1138 Location: Des Moines, Iowa, USA robert w wrote: i like the looks of it. can you get windage adjustments too? Thanks, Yes. The second screw from the front is loosened, and the sight can be adjusted left and right and the screw is snugged down when you're happy with windage. Mounted…Now I just need to cut off the front sight blade and replace it with a finer blade or a post: _________________ It's never too late to have a happy childhood.   Posted: Tue Jan 01, 2013 11:08 pm Slavia Moderator Joined: 31 Mar 2008 Posts: 4382 Location: Waseca, Minnesota, USA Very nicely done - both the sight and the drawings. The "ghost ring" effect you have going on will be good for fast target acquisition, and should work in many lighting conditions. For more precision, you might consider adding a tubular front sight shade. The human eye is better at aligning concentric circles than it is with rectilinear shapes. My alteration of your sight view (left) has the shade centered in the rear aperture - it's not just a shade, but part of the sight picture. If you have a post in front, you put the desired P.O.I. on top of the post like a "lollipop on a stick." If you have a post with a hole you center the desired P.O.I. in that hole. In the middle is the sight shade on my Hakim. It is a split tube that simply snaps into grooves on the sides of the sight body. This is a replacement that I made from a spent CO2 capsule. The Hakim has a simple post for a sight blade. On the right is the sight that I made for my Mendoza. It's a piece of steel pipe screwed to the sight base. The blade is cut from a thumbscrew. You do nice work. _________________ ¡Listo! ¡Apunte! ¡Fuego!   Posted: Wed Jan 02, 2013 9:22 am radar Silver Status Member Joined: 13 Nov 2011 Posts: 1138 Location: Des Moines, Iowa, USA Wow thanks Slavia. I diopter, kind of, is a great idea. I think I will fab' a hood for it. I got a narrow front blade made and fitted last night, so that part is done after bluing. cheers Rob _________________ It's never too late to have a happy childhood.   Posted: Wed Jan 02, 2013 5:18 pm ZipSnipe Veteran Member Joined: 09 Mar 2012 Posts: 327 Great job!! Love the drawings too, is that software generated? If so what software? _________________ You can have tomorrow, I'll take yesterday !!!   Posted: Wed Jan 02, 2013 7:54 pm radar Silver Status Member Joined: 13 Nov 2011 Posts: 1138 Location: Des Moines, Iowa, USA ZipSnipe wrote: Great job!! Love the drawings too, is that software generated? If so what software? Thanks! I have AutoCAD Design Suite 2013, but actually found it much easier to do this work manually on Paint due to the curves, etc when not doing strict ortho views. In paint, you do find a calculator helpful to scale the measurements from the X and Y axes shown in the lower left hand corner. Rob _________________ It's never too late to have a happy childhood.   Posted: Wed Jan 02, 2013 11:13 pm cjs Member Joined: 02 Jan 2008 Posts: 62 If you ever need anything modeled up in SolidWorks, I have access to it and would be willing to help out.   Posted: Thu Jan 03, 2013 9:06 am radar Silver Status Member Joined: 13 Nov 2011 Posts: 1138 Location: Des Moines, Iowa, USA cjs wrote: If you ever need anything modeled up in SolidWorks, I have access to it and would be willing to help out. Cool, thanks. I might. I had access for a few years at ISU, but graduated now and don't have it anymore. That's why I bought AutoCAD 2013 before graduating (at the last minute) so it only cost me $150 as a student rather than $4000+ Rob _________________ It's never too late to have a happy childhood.   Posted: Fri Jan 04, 2013 9:06 pm robert w Senior Member Joined: 12 Feb 2012 Posts: 574 Location: usa i was just thinkin about a dipoter too . now if you would make me a rear sight for my crosman 130 . mine is missing as i had it handed to me in a paper bag all apart . i rebuilt it and shoots fine i just need to get a strip of old used feeler guage mabe .020 and bend ,drill and cut a vee then round the edges _________________ ,crosman 400,gamo big cat in .22, diana 5g,diana 54 air king, diana 34 in .22 diana 34 in .177, wilrauch hw-55,and a romainian pioner training rifle , and a huge collection of powder burners 35 last count . 1 would think i have a gun store   Posted: Sun Jan 06, 2013 12:01 am Slavia Moderator Joined: 31 Mar 2008 Posts: 4382 Location: Waseca, Minnesota, USA Quote: i just need to get a strip of old used feeler guage Notice radar used an old hacksaw blade - junked steel pallet strapping works pretty good too. _________________ ¡Listo! ¡Apunte! ¡Fuego!   Posted: Sun Jan 06, 2013 9:48 am radar Silver Status Member Joined: 13 Nov 2011 Posts: 1138 Location: Des Moines, Iowa, USA Indeed,Pallet strapping makes a good spring material. A good hacksaw blade can be spring tempered pretty nicely, even though they are already pretty springy, I usually hold them at orange heat for a little bit (15 seconds or so) and water quench them. Then clean off the scale so I can see the metal color again, and heat them to "straw yellow" (just the heat discoloration, not glowing yellow hot) for 20-30 seconds and water quench again. Polish, cold blue, and oil. That's just how I do it. cheers, Rob P.S.: I am making a hood for the front sight, as suggested. We'll see how it works out here, pretty soon. _________________ It's never too late to have a happy childhood. 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