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  • Have Blue [dot org] » Gunsmithing the RAS-12 – Part 1
    15 platform The rounded nose and rebated rim makes feeding far simpler than with a standard 12ga shotshell and allows for easy adaptation of existing magazines The most significant feature of the cartridges is obvious they are not of metal construction but polymer US patent 9109850 calls out polycarbonate and nylon as suitable materials though various online sources specifically note polycarbonate as the hull This feature alone is what made me take notice of the system given that I ve done a bit of tinkering with 3D printed polymers in gunsmithing applications Even if supplies of the original ammunition dry up cough Gyrojet cough Dardick cough EtronX cough it should still be possible to recreate the cartridges in a reverse engineered fashion I m somewhat surprised that the RAS 12 designers didn t opt to open source the design as SAAMI standardization is precisely what has allowed previously proprietary cartridges to survive in the market if not outright flourish I carefully disassembled a cartridge to determine the weights in grains for all of the components Projectile half 512 4 gr Nosecone 24 8 gr Nine pellets of 00 buckshot 481 2 gr Wadding 6 4 gr Propellant half 191 0 gr Nitro card 13 0 gr Gas seal 17 0 gr Powder 29 0 gr Hull 117 2 gr Primer 14 8 gr for a grand total of 703 4 grains for a fully assembled cartridge There s certainly a bit of tolerance to these measurements but they should serve as a suitable starting point for weights Now to start measuring the hull and nosecone to draw up in CAD 10 comments so far Add Your Comment Reply TheBig1 said 2015 10 23 05 00 Very interesting concept I had never heard of it before although I follow numerous gun related channels on YouTube AR 10s aren t exactly common over here in Germany thanks to our rather restrictive gun laws Looking forward to updates on your reverse engineering process Reply Salty said 2015 11 03 00 05 I ve been tinkering using 50 bmg as the shotshell So mainly all ya needa source is the nose cone I was thinkin a plastic Easter egg for lack of an easier setup I love the concept they just didn t go about it correctly Give away the Ammo etc Reply Have Blue said 2015 11 03 09 05 How much luck have you had with the 50BMG cases I kind of discarded that idea due to the base on the 50 being around 046 smaller in diameter than the base of the RAS 12 Are you fire forming the brass in some manner Reply Salty said 2015 11 09 11 02 Yep fire formed in 12 ga after annealing Then used a lathe to turn down the rim to where the ras bolt will grab it Gettin s bulge about 1 3 up 50bmg but that brass is so thick I m not sure it ll matter Where can we find

    Original URL path: http://haveblue.org/?p=1936&replytocom=1327733 (2016-04-26)
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  • Have Blue [dot org] » Gunsmithing the RAS-12 – Part 1
    platform The rounded nose and rebated rim makes feeding far simpler than with a standard 12ga shotshell and allows for easy adaptation of existing magazines The most significant feature of the cartridges is obvious they are not of metal construction but polymer US patent 9109850 calls out polycarbonate and nylon as suitable materials though various online sources specifically note polycarbonate as the hull This feature alone is what made me take notice of the system given that I ve done a bit of tinkering with 3D printed polymers in gunsmithing applications Even if supplies of the original ammunition dry up cough Gyrojet cough Dardick cough EtronX cough it should still be possible to recreate the cartridges in a reverse engineered fashion I m somewhat surprised that the RAS 12 designers didn t opt to open source the design as SAAMI standardization is precisely what has allowed previously proprietary cartridges to survive in the market if not outright flourish I carefully disassembled a cartridge to determine the weights in grains for all of the components Projectile half 512 4 gr Nosecone 24 8 gr Nine pellets of 00 buckshot 481 2 gr Wadding 6 4 gr Propellant half 191 0 gr Nitro card 13 0 gr Gas seal 17 0 gr Powder 29 0 gr Hull 117 2 gr Primer 14 8 gr for a grand total of 703 4 grains for a fully assembled cartridge There s certainly a bit of tolerance to these measurements but they should serve as a suitable starting point for weights Now to start measuring the hull and nosecone to draw up in CAD 10 comments so far Add Your Comment Reply TheBig1 said 2015 10 23 05 00 Very interesting concept I had never heard of it before although I follow numerous gun related channels on YouTube AR 10s aren t exactly common over here in Germany thanks to our rather restrictive gun laws Looking forward to updates on your reverse engineering process Reply Salty said 2015 11 03 00 05 I ve been tinkering using 50 bmg as the shotshell So mainly all ya needa source is the nose cone I was thinkin a plastic Easter egg for lack of an easier setup I love the concept they just didn t go about it correctly Give away the Ammo etc Reply Have Blue said 2015 11 03 09 05 How much luck have you had with the 50BMG cases I kind of discarded that idea due to the base on the 50 being around 046 smaller in diameter than the base of the RAS 12 Are you fire forming the brass in some manner Reply Salty said 2015 11 09 11 02 Yep fire formed in 12 ga after annealing Then used a lathe to turn down the rim to where the ras bolt will grab it Gettin s bulge about 1 3 up 50bmg but that brass is so thick I m not sure it ll matter Where can we find nose

    Original URL path: http://haveblue.org/?p=1936&replytocom=1327774 (2016-04-26)
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  • Have Blue [dot org] » Gunsmithing the RAS-12 – Part 1
    15 platform The rounded nose and rebated rim makes feeding far simpler than with a standard 12ga shotshell and allows for easy adaptation of existing magazines The most significant feature of the cartridges is obvious they are not of metal construction but polymer US patent 9109850 calls out polycarbonate and nylon as suitable materials though various online sources specifically note polycarbonate as the hull This feature alone is what made me take notice of the system given that I ve done a bit of tinkering with 3D printed polymers in gunsmithing applications Even if supplies of the original ammunition dry up cough Gyrojet cough Dardick cough EtronX cough it should still be possible to recreate the cartridges in a reverse engineered fashion I m somewhat surprised that the RAS 12 designers didn t opt to open source the design as SAAMI standardization is precisely what has allowed previously proprietary cartridges to survive in the market if not outright flourish I carefully disassembled a cartridge to determine the weights in grains for all of the components Projectile half 512 4 gr Nosecone 24 8 gr Nine pellets of 00 buckshot 481 2 gr Wadding 6 4 gr Propellant half 191 0 gr Nitro card 13 0 gr Gas seal 17 0 gr Powder 29 0 gr Hull 117 2 gr Primer 14 8 gr for a grand total of 703 4 grains for a fully assembled cartridge There s certainly a bit of tolerance to these measurements but they should serve as a suitable starting point for weights Now to start measuring the hull and nosecone to draw up in CAD 10 comments so far Add Your Comment Reply TheBig1 said 2015 10 23 05 00 Very interesting concept I had never heard of it before although I follow numerous gun related channels on YouTube AR 10s aren t exactly common over here in Germany thanks to our rather restrictive gun laws Looking forward to updates on your reverse engineering process Reply Salty said 2015 11 03 00 05 I ve been tinkering using 50 bmg as the shotshell So mainly all ya needa source is the nose cone I was thinkin a plastic Easter egg for lack of an easier setup I love the concept they just didn t go about it correctly Give away the Ammo etc Reply Have Blue said 2015 11 03 09 05 How much luck have you had with the 50BMG cases I kind of discarded that idea due to the base on the 50 being around 046 smaller in diameter than the base of the RAS 12 Are you fire forming the brass in some manner Reply Salty said 2015 11 09 11 02 Yep fire formed in 12 ga after annealing Then used a lathe to turn down the rim to where the ras bolt will grab it Gettin s bulge about 1 3 up 50bmg but that brass is so thick I m not sure it ll matter Where can we find

    Original URL path: http://haveblue.org/?p=1936&replytocom=1331840 (2016-04-26)
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  • Have Blue [dot org] » Gunsmithing the RAS-12 – Part 1
    platform The rounded nose and rebated rim makes feeding far simpler than with a standard 12ga shotshell and allows for easy adaptation of existing magazines The most significant feature of the cartridges is obvious they are not of metal construction but polymer US patent 9109850 calls out polycarbonate and nylon as suitable materials though various online sources specifically note polycarbonate as the hull This feature alone is what made me take notice of the system given that I ve done a bit of tinkering with 3D printed polymers in gunsmithing applications Even if supplies of the original ammunition dry up cough Gyrojet cough Dardick cough EtronX cough it should still be possible to recreate the cartridges in a reverse engineered fashion I m somewhat surprised that the RAS 12 designers didn t opt to open source the design as SAAMI standardization is precisely what has allowed previously proprietary cartridges to survive in the market if not outright flourish I carefully disassembled a cartridge to determine the weights in grains for all of the components Projectile half 512 4 gr Nosecone 24 8 gr Nine pellets of 00 buckshot 481 2 gr Wadding 6 4 gr Propellant half 191 0 gr Nitro card 13 0 gr Gas seal 17 0 gr Powder 29 0 gr Hull 117 2 gr Primer 14 8 gr for a grand total of 703 4 grains for a fully assembled cartridge There s certainly a bit of tolerance to these measurements but they should serve as a suitable starting point for weights Now to start measuring the hull and nosecone to draw up in CAD 10 comments so far Add Your Comment Reply TheBig1 said 2015 10 23 05 00 Very interesting concept I had never heard of it before although I follow numerous gun related channels on YouTube AR 10s aren t exactly common over here in Germany thanks to our rather restrictive gun laws Looking forward to updates on your reverse engineering process Reply Salty said 2015 11 03 00 05 I ve been tinkering using 50 bmg as the shotshell So mainly all ya needa source is the nose cone I was thinkin a plastic Easter egg for lack of an easier setup I love the concept they just didn t go about it correctly Give away the Ammo etc Reply Have Blue said 2015 11 03 09 05 How much luck have you had with the 50BMG cases I kind of discarded that idea due to the base on the 50 being around 046 smaller in diameter than the base of the RAS 12 Are you fire forming the brass in some manner Reply Salty said 2015 11 09 11 02 Yep fire formed in 12 ga after annealing Then used a lathe to turn down the rim to where the ras bolt will grab it Gettin s bulge about 1 3 up 50bmg but that brass is so thick I m not sure it ll matter Where can we find nose

    Original URL path: http://haveblue.org/?p=1936&replytocom=1331874 (2016-04-26)
    Open archived version from archive

  • Have Blue [dot org] » Gunsmithing the RAS-12 – Part 1
    15 platform The rounded nose and rebated rim makes feeding far simpler than with a standard 12ga shotshell and allows for easy adaptation of existing magazines The most significant feature of the cartridges is obvious they are not of metal construction but polymer US patent 9109850 calls out polycarbonate and nylon as suitable materials though various online sources specifically note polycarbonate as the hull This feature alone is what made me take notice of the system given that I ve done a bit of tinkering with 3D printed polymers in gunsmithing applications Even if supplies of the original ammunition dry up cough Gyrojet cough Dardick cough EtronX cough it should still be possible to recreate the cartridges in a reverse engineered fashion I m somewhat surprised that the RAS 12 designers didn t opt to open source the design as SAAMI standardization is precisely what has allowed previously proprietary cartridges to survive in the market if not outright flourish I carefully disassembled a cartridge to determine the weights in grains for all of the components Projectile half 512 4 gr Nosecone 24 8 gr Nine pellets of 00 buckshot 481 2 gr Wadding 6 4 gr Propellant half 191 0 gr Nitro card 13 0 gr Gas seal 17 0 gr Powder 29 0 gr Hull 117 2 gr Primer 14 8 gr for a grand total of 703 4 grains for a fully assembled cartridge There s certainly a bit of tolerance to these measurements but they should serve as a suitable starting point for weights Now to start measuring the hull and nosecone to draw up in CAD 10 comments so far Add Your Comment Reply TheBig1 said 2015 10 23 05 00 Very interesting concept I had never heard of it before although I follow numerous gun related channels on YouTube AR 10s aren t exactly common over here in Germany thanks to our rather restrictive gun laws Looking forward to updates on your reverse engineering process Reply Salty said 2015 11 03 00 05 I ve been tinkering using 50 bmg as the shotshell So mainly all ya needa source is the nose cone I was thinkin a plastic Easter egg for lack of an easier setup I love the concept they just didn t go about it correctly Give away the Ammo etc Reply Have Blue said 2015 11 03 09 05 How much luck have you had with the 50BMG cases I kind of discarded that idea due to the base on the 50 being around 046 smaller in diameter than the base of the RAS 12 Are you fire forming the brass in some manner Reply Salty said 2015 11 09 11 02 Yep fire formed in 12 ga after annealing Then used a lathe to turn down the rim to where the ras bolt will grab it Gettin s bulge about 1 3 up 50bmg but that brass is so thick I m not sure it ll matter Where can we find

    Original URL path: http://haveblue.org/?p=1936&replytocom=1334141 (2016-04-26)
    Open archived version from archive

  • Have Blue [dot org] » Gunsmithing the RAS-12 – Part 1
    15 platform The rounded nose and rebated rim makes feeding far simpler than with a standard 12ga shotshell and allows for easy adaptation of existing magazines The most significant feature of the cartridges is obvious they are not of metal construction but polymer US patent 9109850 calls out polycarbonate and nylon as suitable materials though various online sources specifically note polycarbonate as the hull This feature alone is what made me take notice of the system given that I ve done a bit of tinkering with 3D printed polymers in gunsmithing applications Even if supplies of the original ammunition dry up cough Gyrojet cough Dardick cough EtronX cough it should still be possible to recreate the cartridges in a reverse engineered fashion I m somewhat surprised that the RAS 12 designers didn t opt to open source the design as SAAMI standardization is precisely what has allowed previously proprietary cartridges to survive in the market if not outright flourish I carefully disassembled a cartridge to determine the weights in grains for all of the components Projectile half 512 4 gr Nosecone 24 8 gr Nine pellets of 00 buckshot 481 2 gr Wadding 6 4 gr Propellant half 191 0 gr Nitro card 13 0 gr Gas seal 17 0 gr Powder 29 0 gr Hull 117 2 gr Primer 14 8 gr for a grand total of 703 4 grains for a fully assembled cartridge There s certainly a bit of tolerance to these measurements but they should serve as a suitable starting point for weights Now to start measuring the hull and nosecone to draw up in CAD 10 comments so far Add Your Comment Reply TheBig1 said 2015 10 23 05 00 Very interesting concept I had never heard of it before although I follow numerous gun related channels on YouTube AR 10s aren t exactly common over here in Germany thanks to our rather restrictive gun laws Looking forward to updates on your reverse engineering process Reply Salty said 2015 11 03 00 05 I ve been tinkering using 50 bmg as the shotshell So mainly all ya needa source is the nose cone I was thinkin a plastic Easter egg for lack of an easier setup I love the concept they just didn t go about it correctly Give away the Ammo etc Reply Have Blue said 2015 11 03 09 05 How much luck have you had with the 50BMG cases I kind of discarded that idea due to the base on the 50 being around 046 smaller in diameter than the base of the RAS 12 Are you fire forming the brass in some manner Reply Salty said 2015 11 09 11 02 Yep fire formed in 12 ga after annealing Then used a lathe to turn down the rim to where the ras bolt will grab it Gettin s bulge about 1 3 up 50bmg but that brass is so thick I m not sure it ll matter Where can we find

    Original URL path: http://haveblue.org/?p=1936&replytocom=1349578 (2016-04-26)
    Open archived version from archive

  • Have Blue [dot org] » Gunsmithing the RAS-12 – Part 1
    15 platform The rounded nose and rebated rim makes feeding far simpler than with a standard 12ga shotshell and allows for easy adaptation of existing magazines The most significant feature of the cartridges is obvious they are not of metal construction but polymer US patent 9109850 calls out polycarbonate and nylon as suitable materials though various online sources specifically note polycarbonate as the hull This feature alone is what made me take notice of the system given that I ve done a bit of tinkering with 3D printed polymers in gunsmithing applications Even if supplies of the original ammunition dry up cough Gyrojet cough Dardick cough EtronX cough it should still be possible to recreate the cartridges in a reverse engineered fashion I m somewhat surprised that the RAS 12 designers didn t opt to open source the design as SAAMI standardization is precisely what has allowed previously proprietary cartridges to survive in the market if not outright flourish I carefully disassembled a cartridge to determine the weights in grains for all of the components Projectile half 512 4 gr Nosecone 24 8 gr Nine pellets of 00 buckshot 481 2 gr Wadding 6 4 gr Propellant half 191 0 gr Nitro card 13 0 gr Gas seal 17 0 gr Powder 29 0 gr Hull 117 2 gr Primer 14 8 gr for a grand total of 703 4 grains for a fully assembled cartridge There s certainly a bit of tolerance to these measurements but they should serve as a suitable starting point for weights Now to start measuring the hull and nosecone to draw up in CAD 10 comments so far Add Your Comment Reply TheBig1 said 2015 10 23 05 00 Very interesting concept I had never heard of it before although I follow numerous gun related channels on YouTube AR 10s aren t exactly common over here in Germany thanks to our rather restrictive gun laws Looking forward to updates on your reverse engineering process Reply Salty said 2015 11 03 00 05 I ve been tinkering using 50 bmg as the shotshell So mainly all ya needa source is the nose cone I was thinkin a plastic Easter egg for lack of an easier setup I love the concept they just didn t go about it correctly Give away the Ammo etc Reply Have Blue said 2015 11 03 09 05 How much luck have you had with the 50BMG cases I kind of discarded that idea due to the base on the 50 being around 046 smaller in diameter than the base of the RAS 12 Are you fire forming the brass in some manner Reply Salty said 2015 11 09 11 02 Yep fire formed in 12 ga after annealing Then used a lathe to turn down the rim to where the ras bolt will grab it Gettin s bulge about 1 3 up 50bmg but that brass is so thick I m not sure it ll matter Where can we find

    Original URL path: http://haveblue.org/?p=1936&replytocom=1373486 (2016-04-26)
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  • Have Blue [dot org] » Gunsmithing with a 3D printer – Part 4
    I clamped it to the angle plate on the mill and indicated it in vertically with a dial indicator and coaxially with a Blake co ax indicator before opening up the hole with the boring head After bringing the hole to appropriate size I could just begin to insert the barrel shank I tapped the barrel clamp holes with 12 24 threads thanks to the blueprints at fireamfiles com as well as the stock mounting screw hole in the front tang Next was to actually test installation of the barrel itself which tightened up nicely but I noticed that the barrel would visibly cant downward as I tightened the clamp screws After removing the barrel I saw that there wasn t quite enough clearance on the front counterbore and the back of the barrel was catching on the top front edge of the receiver So it was back to the boring head to enlarge the diameter on the mating face slightly Then it was time for a test fit of the bolt it was a tight squeeze to get it past the rail on the inside right of the receiver As it turned out I think the rear wall of the receiver in the original IGES file may be a touch too thick as I also couldn t get the trigger pack installed so I thinned out the rear by perhaps 0 030 until I could just get the retainer pins to go through the receiver and trigger pack I had already reamed out the holes in the receiver at this point With that done I could finally fit all the internals and actually dry fire the gun However when I tried to drop the receiver assembly into the wood stock it wouldn t fully seat After fumbling with it for a few minutes I noticed that there is an extra relief cut on the original receiver at the interface between the tang and the receiver front As it turned out the original IGES file does indeed have this relief cut but when I brought it into SolidWorks I had run a feature recognition pass on the part For some reason SolidWorks removed this feature I should have just done a direct export to an STL file instead Oh well one last machining pass on the mill took care of it The barreled action fit just fine in the stock and both the 10 and 25 round Ruger magazines fit though perhaps a little more loosely than desired Today I took it to the range and found an accomplice to act as a model Naturally I let him burn through some rounds on the 3D printed AR receiver configured as 22 pistol first A 22 AR pistol is kind of a ridiculous contraption but it is also ridiculously fun Next was the test of the printed 10 22 receiver As with previous testing I started with only 1 round in the magazine and worked my way up Things were running just fine so I put in the 25 round magazine and let Secret Agent Man have some trigger time with it Generally it ran nicely though we did have some feed issues with it I think the fitment of the magazine could be to blame as it seems that the front of the magazine is able to tip down a little too far Both magazines are also absolutely brand new this was their first usage and I ve been told that 10 22 magazines operate better after an initial break in period So there you have it a 3D printed 10 22 receiver is entirely feasible 22 comments so far Add Your Comment Reply TheBig1 said 2013 03 17 19 31 Thanks for the update very interesting Reply Laszlo said 2013 03 18 02 07 Hi I always love your posts they are detailed full of good pictures and properly researched Couple of weeks back I was reading your old articles especially those of about your 3D printer And Im wondering since then how exactly the Z axis are constructed in it No other high definition picture is at on the web and what is most itching me is the lack of a saddle plate Any proper CNC machine has one for each axis where the linear shafts are bolted to and it prevents twisting or other play while moving So without a saddle plate you should see a wobbling effect on your print yet you don t have one If you are out of ideas about what to write then here is a pointer Best Laszlo Reply Have Blue said 2013 03 18 16 44 Thank you for the kind words I picked up another Stratasys FDM a 2000 the other week and hope to make a post on getting that one running so perhaps I can take a few photos of the table But to describe the system there really isn t a saddle plate as there is more than 1 leadscrew The bed is just like that on the old Darwin model of the RepRap there is a threaded Acme screw on each corner and they all rotate synchronously to raise and lower the bed That takes care of any up down wobbling but doesn t constrain the bed from moving within its own plane For that there is a guide shaft located between the front and rear leadscrews on each side right at the center edge of the table A collar bushing on each side of the table is apparently all that is used to engage the guide shaft nothing even as fancy as a linear bearing at least on my 1600 I ll have to check the 2000 and see if it s the same Reply Allen said 2013 03 21 00 12 Fantastic job here I ve always loved the 10 22 a classic rifle but always in the process of improvement You ve just added another possibility of customization for the 10 22

    Original URL path: http://haveblue.org/?p=1530 (2016-04-26)
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