GTA
Support Equipment For PCP/HPA/CO2 and springers ,rams => 3D printing and files => Topic started by: rsterne on March 11, 2024, 06:20:37 PM
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Here is halfway through a print for my latest project.... CF-PETG....
(https://hosting.photobucket.com/images/oo221/rsterne/First_CF-PETG_Print.JPG) (https://hosting.photobucket.com/images/oo221/rsterne/First_CF-PETG_Print.JPG)
Anyone care to guess what it is?.... ::)
Bob
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You're a little bit late.
The letter "N" has already been invented.
Sorry. :(
Ron
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Maybe so but not in this font!.... ;) ;D
Bob
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OK, here is a hint.... That print, when finished, is the front half.... Anybody?....
Bob
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Is it some sort of airgun stock?
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Wine bottle rack?
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Is it some sort of airgun stock?
DING DING DING DING !!!!
It fits the PRod trigger group (also 2289/1377/1322) instead of Crosman's long and low annoyance.... Photos soon!....
Bob
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The curved relief was the clue for me. I figured it was for the wrist or a wine bottle. I knew that you and your wife were into wine. What threw me off was how much detail you put into the chess set and I wasn't sure which direction you would go next.
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fancy fishing rod holder
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Yeah, Tinkercad has its limits, you can't really get fancy blended curves (or at least I can't).... ::) ....It sure fits well, though, the recess creates a functional thumbhole.... You can delete that entire element, but I was a bit nervous about the thinness of the upper part of the stock and wanted to brace it.... The stock is printed in two pieces, layers vertically across it, but the joiners are printed horizontally, and insert as deep as possible, creating a unit that has in effect CF-filled plastic "plywood" for strength.... Photos imminently....
Bob
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Thanks Bob... virtually all your projects interest me.
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Here are the photos.... First, assembled, grip slid into place.... the side screws fit great, extra hole for a bottom screw if you wish!.... The comb is located in line with the main tube, raising your eyeline to give a far better cheek weld (it was non-existent in the Crosman skeleton stock).... The bottom of the stock is straight, flat, and parallel with the bore so that it will not disturb the vertical POI when fired on bags.... This does place the butt higher than ideal, but the point fits into the hollow in your shoulder, just like on an AR....
(https://hosting.photobucket.com/images/oo221/rsterne/PRod_Stock.jpg) (https://hosting.photobucket.com/images/oo221/rsterne/PRod_Stock.jpg)
Next, all the parts that go into it.... The joiners are incredibly strong along their length, and are a slide fit and will be glued in place.... LoP is 14.5"....
(https://hosting.photobucket.com/images/oo221/rsterne/Stock_Parts.jpg) (https://hosting.photobucket.com/images/oo221/rsterne/Stock_Parts.jpg)
Here are the shape of the holes that the joiners slide into.... The joiners are printed horizontally for strength, the rest is printed vertically.... The shallow curve in the butt, being the last printed, ends up with horizontal steps for a "grippy" surface.... The scooped out recess in the brace behind the thumbhole is to clear your thumb.... The brace is to strengthen the thin area behind the trigger group and in front of the comb.... For a left hand stock, just print a mirror image of the front half!....
(https://hosting.photobucket.com/images/oo221/rsterne/Stock_Details.jpg) (https://hosting.photobucket.com/images/oo221/rsterne/Stock_Details.jpg)
The inletting took a long time and a lot of prototypes (in PLA) to perfect.... There is an extra mounting hole in the bottom, you can use the printed hole as a guide for drilling and tapping the bottom of the grip....
(https://hosting.photobucket.com/images/oo221/rsterne/Stock_Inletting.jpg) (https://hosting.photobucket.com/images/oo221/rsterne/Stock_Inletting.jpg)
The stock fits the bottom half of a PRod /Disco 7/8" OD tube, and the recess extends about 30mm behind the end of the tube to allow room for an SSG.... The 9/16" hole behind that is to clear the moving rod of the SSG to allow cocking, and is 25mm deep.... No more getting pinched by the SSG when you fire the gun.... I also have a version with a narrower top recess to fit the 3/4" OD pumper size tubes (2289 / 1377 / 1322).... but haven't printed one yet....
Bob
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Different but I like it.
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The ergonomics are good.... better for prone or bench than standing because of the higher butt, but much like an AR.... The cheek weld is FAR better than the Crosman skeleton stock from the 2289, which I have a half dozen of, some modified like this (shorter, with a higher comb, and an extra screw in the bottom of the pistol grip)....
(https://hosting.photobucket.com/albums/oo221/rsterne/22%20PCP/.highres/2260PCPCarbineEmail.jpg) (https://hosting.photobucket.com/albums/oo221/rsterne/22%20PCP/.highres/2260PCPCarbineEmail.jpg)
The original Crosman stock had a LoP of 15.75", which is just silly unless you have arms like a Chimpanzee!.... The comb on the original is 1.25" lower than on my new stock, again no cheek weld possible (maybe a "jaw" weld?").... The bottom of my comb is level with the top of the original.... ::)
Bob
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Here are the photos.... First, assembled, grip slid into place.... the side screws fit great, extra hole for a bottom screw if you wish!.... The comb is located in line with the main tube, raising your eyeline to give a far better cheek weld (it was non-existent in the Crosman skeleton stock).... The bottom of the stock is straight, flat, and parallel with the bore so that it will not disturb the vertical POI when fired on bags.... This does place the butt higher than ideal, but the point fits into the hollow in your shoulder, just like on an AR....
(https://hosting.photobucket.com/images/oo221/rsterne/PRod_Stock.jpg) (https://hosting.photobucket.com/images/oo221/rsterne/PRod_Stock.jpg)
Next, all the parts that go into it.... The joiners are incredibly strong along their length, and are a slide fit and will be glued in place.... LoP is 14.5"....
(https://hosting.photobucket.com/images/oo221/rsterne/Stock_Parts.jpg) (https://hosting.photobucket.com/images/oo221/rsterne/Stock_Parts.jpg)
Here are the shape of the holes that the joiners slide into.... The joiners are printed horizontally for strength, the rest is printed vertically.... The shallow curve in the butt, being the last printed, ends up with horizontal steps for a "grippy" surface.... The scooped out recess in the brace behind the thumbhole is to clear your thumb.... The brace is to strengthen the thin area behind the trigger group and in front of the comb.... For a left hand stock, just print a mirror image of the front half!....
(https://hosting.photobucket.com/images/oo221/rsterne/Stock_Details.jpg) (https://hosting.photobucket.com/images/oo221/rsterne/Stock_Details.jpg)
The inletting took a long time and a lot of prototypes (in PLA) to perfect.... There is an extra mounting hole in the bottom, you can use the printed hole as a guide for drilling and tapping the bottom of the grip....
(https://hosting.photobucket.com/images/oo221/rsterne/Stock_Inletting.jpg) (https://hosting.photobucket.com/images/oo221/rsterne/Stock_Inletting.jpg)
The stock fits the bottom half of a PRod /Disco 7/8" OD tube, and the recess extends about 30mm behind the end of the tube to allow room for an SSG.... The 9/16" hole behind that is to clear the moving rod of the SSG to allow cocking, and is 25mm deep.... No more getting pinched by the SSG when you fire the gun.... I also have a version with a narrower top recess to fit the 3/4" OD pumper size tubes (2289 / 1377 / 1322).... but haven't printed one yet....
Bob
Mr. Bob
I hope your going to share that .STL :)
Ray
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Yep, just double checking to make sure there are no misteaks!.... ::)
Bob
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The ergonomics are good.... better for prone or bench than standing because of the higher butt, but much like an AR.... The cheek weld is FAR better than the Crosman skeleton stock from the 2289, which I have a half dozen of, some modified like this (shorter, with a higher comb, and an extra screw in the bottom of the pistol grip)....
(https://hosting.photobucket.com/albums/oo221/rsterne/22%20PCP/.highres/2260PCPCarbineEmail.jpg) (https://hosting.photobucket.com/albums/oo221/rsterne/22%20PCP/.highres/2260PCPCarbineEmail.jpg)
The original Crosman stock had a LoP of 15.75", which is just silly unless you have arms like a Chimpanzee!.... The comb on the original is 1.25" lower than on my new stock, again no cheek weld possible (maybe a "jaw" weld?".... The bottom of my comb is level with the top of the original.... ::)
Bob
Bob.. off topic question..
Will that angled foster fitting cap fit the new 3622 PCP tube?
Thanks
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It fits Disco/22XX threads, I don't know about the new 3622....
Bob
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I changed the back of the stock to allow the Butt Plate to be adjusted vertically a total of 40mm.... There are 5 holes for adjustment in the plate, and a single hole in the back of the stock, allowing 10mm adjustments for a total of 40mm.... The plate has tapered corners fitting into a matching shape in the stock, and fits perfectly with just the single screw.... Here is a photo in the lowest position.... It weighs a total of 15 ounces (~430 g.)....
(https://hosting.photobucket.com/images/oo221/rsterne/Adjustabe_Stock.jpg) (https://hosting.photobucket.com/images/oo221/rsterne/Adjustabe_Stock.jpg)
In the highest position, it looks like the previous photos, and the bottom of the stock is flat for benchrest shooting.... There is a 3/8" hex hole in the stock to hold a Nyloc nut, and the screw required is a 2" long 10-32, preferably with a pan head.... I am currently printing a front half to fit a 2289 tube, with a 3/4" OD....
Bob
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OK, I think I am happy enough with the .stl files to post them.... The front and rear stock halves are printed vertically, I recommend using a brim for extra adhesion area.... The joiners and adjustable buttplate are printed horizontally, and I just used a skirt.... I have three different front stock halves, one for the 2289 (3/4" OD tube), one for the 2240/50/60, PRod, Disco (7/8" OD tube), and one for the MRod (1.25" OD tube).... They all fit the PRod trigger group, and the older version trigger used for the 13XX & 2289.... They may need a bit of filing inside to remove seams or bumps, depending on your printer and/or material.... I used several brands of CF-PETG, and the more carbon content the larger the ODs of parts were, and the smaller the IDs (and the more matt in appearance), and so the tighter the fit, and this applied to the joiners as well (so they may need sanding).... The web behind the grip at the top benefits from support, but most of the ones I printed I just filed off the stringy bits there, so that is up to you.... You don't need supports inside the joiner wells, providing you use the bridging settings in Cura (same for the wells in the rear halves).... All the front halves have an extended section behind the back of the main tube to give enough room for "most" SSGs, and another inch of 14mm (9/16") hole behind that for the stop rod.... no more pinched fingers!.... If you want a left-hand stock, print a mirror image of the front half.... ;)
I have two different rear halves, one has a fixed buttplate, and the other is vertically adjustable over a range of 40mm (10mm increments), and there is an .stl for the matching movable buttplate.... The Length of Pull is 14.5".... They require different joiners, the ones for the fixed butt are longer, so make sure you print the correct pair for the stock you make.... The bottom of the stock is straight, flat and parallel with the bore, for bench shooting, but if you opt for the adjustable buttplate you may find the stock more comfortable for offhand.... The comb line is basically lined up with the top of the main tube, which should give a decent cheek weld for most scopes.... If you need a higher comb, there is a file for a stock riser you would glue on top of the existing comb, with a 15mm rise.... It can be scaled to whatever length you want.... Make sure the joiners are a loose slide fit to leave room for glue.... I used JB Weld Plastic Bonder, which is a 2-part Urethane for repairing car parts, and is available in Tan or Black.... It is less viscous than epoxy, so easier to spread inside the joiner wells, sets in 15 min. (so no panic) and cures in 30 min. (although I would suggest at least an hour before stressing it).... A bungy cord wrapped through the thumbhole and around the buttplate works great to clamp the pieces together while drying.... Wipe any excess that squeezes out where the halves meet immediately, before it sets....
All the files, and a few photos, are in the zipped folder below.... If you have any questions that aren't answered in this thread, just ask and I will do my best to answer them....
Bob
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Purty slick there Mr. Sterne... good on you for sharing the files.
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I have now made 5 of these.... for everything from a hunting carbine to a CO2 indoor target to a .22 slug shooter benchrest gun.... I think they are just the cat's meow!.... Very pleased with the way they came out.... Anybody have a need for some original Crosman skeleton stocks?.... :P
Bob
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I have now made 5 of these.... for everything from a hunting carbine to a CO2 indoor target to a .22 slug shooter benchrest gun.... I think they are just the cat's meow!.... Very pleased with the way they came out.... Anybody have a need for some original Crosman skeleton stocks?.... :P
Bob
I had no trouble getting rid of my OE stocks here. But now everyone will want the 3D ones LOL