thatoneguy92088 Posted December 30, 2011 Report Share Posted December 30, 2011 I have decided to try my hand at a custom airsoft gun. I was inspired by renegadecow's amazing SKS. I do not do period airsofting, so a bright red wood stock with modern gear might look out of place. I have decided on a modernized stock for the SKS and the D/M Model for ease of skirmishability. The first order of business, I ordered all of the parts I didn't want to machine and didn't need to machine off of the real SKS. I had a hard time finding a front sight, so I figured I would just make it. I was bored today, so I'll post all of the progress pictures. Front Sight Solidworks Model Front Sight Post Solidworks Model Front Sight CAM Simulation Now that I had the models and the G-Code I was onto the mill. Stock Mounted to the Mill Pockets and Profile Cut Mach3 During Profile Finished Profile/Pockets Facing with the Fly-Cutter Top Hole Drilling for Tap Manual Tapping Here is my assembly so far. Since the real sks barrel is tapered, I need to make sleeves for the rear sight block, gas tube block and stock ferrule. This is the completed Front sight mounted to the m14 barrel And the Rear Sight Block mounted There is a lot of work ahead, but I hope I can complete this in a timely manner. Here is how it should look all laid out. The gearbox will fit, but I am not looking forward to milling/drilling it out. Link to post Share on other sites
BigAl Posted December 31, 2011 Report Share Posted December 31, 2011 Great another top notch build thread to watch. Lookin good so far mate. Link to post Share on other sites
Leon Kennedy Posted December 31, 2011 Report Share Posted December 31, 2011 God that's cool. I like seeing these processes from the start. Link to post Share on other sites
DFM56 Posted December 31, 2011 Report Share Posted December 31, 2011 Do you write your own g-code or can cad do it for you? I work in a CNC shop but I've never done anything on the programming side, curious as to what goes in to that. Most of the projects I do are hand drafted and manually machined, it's kind of a pain.. Details on your mill? Link to post Share on other sites
Bane Posted December 31, 2011 Report Share Posted December 31, 2011 Machining the receiver and bolt wont be too hard, the receiver should just be tempered steel (if its russian) if its chinese it'll be most probably soft as hell. The bolt however will be hard and you'll have to anneal it quite thoroughly before you can even think of machining it successfully Link to post Share on other sites
renegadecow Posted December 31, 2011 Report Share Posted December 31, 2011 If it's late chinese (receiver), you may not even need to do any serious machining. They're stamped steel with thinner walls so the inside dimensions should be more roomy. Link to post Share on other sites
thatoneguy92088 Posted December 31, 2011 Author Report Share Posted December 31, 2011 Do you write your own g-code or can cad do it for you? I work in a CNC shop but I've never done anything on the programming side, curious as to what goes in to that. Most of the projects I do are hand drafted and manually machined, it's kind of a pain.. Details on your mill? Unless you are doing a very simple run, there is no way I would write G-Code by hand. It's a huge pain in the *albatross* and takes forever. I have tried a few CAD setups and found solidcam to be the best, but unless you have an educational or pirated version, you better have deep pockets. There is also ESPRIT which is similar to Solidcam, but isn't integrated with Solidworks. CAMBAM works well for Autocad 2.5 D machining. The last one I have tried was Mastercam, but I disliked it a lot. As for how to get the G-Code out of the CAD software, I learned by watching these videos. http://www.youtube.com/watch?v=fL723-hywk4&feature=plcp&context=C29f1aUDOEgsToPDskIbM4R9xhY5ZpHMT26yRYpB The Mill is just a Sherline Mini-Mill that my brother built. Machining the receiver and bolt wont be too hard, the receiver should just be tempered steel (if its russian) if its chinese it'll be most probably soft as hell. The bolt however will be hard and you'll have to anneal it quite thoroughly before you can even think of machining it successfully If it's late chinese (receiver), you may not even need to do any serious machining. They're stamped steel with thinner walls so the inside dimensions should be more roomy. I will be machining the receiver out of aluminum, even thin steel is a huge pain to do on my small mill. As for updates, I don't have pictures, but I mounted the stock ferrule to the barrel. I was also trying to change the handguards out and the pin is notorious for being difficult. Broke a punch just trying to get it out so I'll just buy a tapco gas tube assembly. Link to post Share on other sites
thatoneguy92088 Posted January 2, 2012 Author Report Share Posted January 2, 2012 I've been working to get everything mounted to the barrel. Some pictures from the work today. Stock and Gas Block Turning it Down to Sleeve Drilling it out 1st pass Facing the Top Milling it out to Barrel Diameter My Workstation Here are some of the pictures of what I have done so far. Don't mind the wood handguard, I'm changing it out to tapco. Finally for today, I have started making the solidworks model of the receiver. Because of the size of my mill, It will have to be done in two parts. Some dimensions, its .6 inches High and 9 inches long. Since I am using a real steel stock, there is absolutely no room on the walls once you get to the meat of the gearbox. This piece would screw into a front piece that the barrel will screw into. Here's my model so far. Link to post Share on other sites
Horsem4n Posted January 2, 2012 Report Share Posted January 2, 2012 very very nice. what milling machine are you using? Link to post Share on other sites
thatoneguy92088 Posted January 10, 2012 Author Report Share Posted January 10, 2012 very very nice. what milling machine are you using? Sherline Mini-Mill that my brother CNC'd No I am not dead, but with school starting I'll have less time to work. The Tapco Upper handguard came in and fit beautifully and looks amazing. I thought the front end looks a bit plain so I decided to build a birdcage/custom looking flash hider. First Design I thought it looked alright, but it was about 1.25 inches in diameter and made my front sight post look anorexic, so it was back to the tools. Facing Pocket Rotary Table mounted horizontal First Slots Assembled Barrel My next adventure is using the mill to take some of the stock material off. Then I will hollow out the stock more for the motor. After that is done I hope I can begin machining the receiver. Link to post Share on other sites
WhiteHawksan Posted January 10, 2012 Report Share Posted January 10, 2012 its looking awesome, fantastic job =] Link to post Share on other sites
wildething Posted January 10, 2012 Report Share Posted January 10, 2012 looking great! Link to post Share on other sites
DangerWerx Posted January 10, 2012 Report Share Posted January 10, 2012 Man, I am extremely jealous of the setup you have. By any chance do you know of your brother's cnc setup? I am looking to convert one that I just picked up. Link to post Share on other sites
1st_shooter Posted January 18, 2012 Report Share Posted January 18, 2012 Awesome thread! Im looking foward to the next update. I have been seriously owning with an SKS CQB setup on BF3 and I just want one now! Link to post Share on other sites
Dinosaur Posted March 5, 2012 Report Share Posted March 5, 2012 This looks phenomenal, and on par with renegade cow's build. Nice set up and originality. do you plan on using/modding the Tapco magazines, or just sticking with AK mags? This is actually something I will be doing. Unfortunately I lack the access to the equipment right now, so it will be done using some real steel parts, balsa or paper models, and a process known as Rondo (fiberglass resin mixed with Bondo). Much easier to work with than steel or aluminum, and is incredibly strong as well. I'll be starting a thread once I can get the material to do it Link to post Share on other sites
Docv400 Posted March 7, 2012 Report Share Posted March 7, 2012 Nice work! Whatever you do, don't post this on the Red Alliance forum, because they will find out where you live... Link to post Share on other sites
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