CETME C/G3/PTR Receiver Flat Bending Jig

The all New AKA Armament Designed jig, based on the original. Made by Jeff Tanko. We redesigned and improved upon the concept. We changed many attributes: making our all new, proprietary jig quicker to use, easier to set up, stronger/longer lasting, and getting rid of the Shim system! Still made with 2.2 pounds or 1 kilo of SOLID PLA Pro Polymer. These jigs are a lot tougher than they look. The polymer jig allows for repeated use, clean bends, and NO nasty marring on your finished receiver. 

The Blem Jigs are in perfect working order comes with just the Jig (Top and Bottom) 

\Quick Instruction/

Assemble and press. Every aspect of this jig is made for quick and easy use. No matter which direction you throw your flat on, it will land in a pressable and ready-to-use position. The new ridgelines form up to and settle the flat in the proper place. The two notches on either side of the base are made to accept the ejection port no matter which direction you place it down. Ultimately, saving you time and giving you a product you can count on. 

Your jig will come with a quick how-to and pressure requirements/limits.

\The New Design/

Now there is no need to pull the provided 1/4" thick steel bar because it is recessed into the mandrels. When the receiver flat completes its bend, it will clear your bar when before it would have needed to be taken out halfway through. If you have something handy, you can add another 1"x1"12"L steel bar for the initial bending of the flat, but it is no longer needed. Did we mention the SHIMs that were part of the prior jig are no longer needed. The design has added mass to the top mandrel to correctly form your receiver without requiring them. After both sides of your flat have met in the middle (there may be an air gap of 1/4" at most), you need to properly form your 80%receiver by continuing to press through the jig. On a manual hydraulic shop press, it means another 2 or 3 full pumps. Judging as you go weather or not to continue. The jig will hold up. But you need to make sure the top rounded section of the receiver and the bolt spacing are properly formed.

 \Sturdy?/

Designed in a 4-part construction and combined using (x2) 14" long by 1/2"Ø threaded steel rods passing through the entire base and (x2) of the same rods 12" long threaded and pressed into the top mandrel. The first side of the bottom jig has the threaded rod screwed in, then the second half has another rod screwed into the opposite hole. They are then pressed together, ensuring the best possible joining. The same is repeated on the top mandrel. You won't be able to separate them by hand.

\On last thing/

Last time around many of you were not exactly impressed with wait times. That is why we will no longer take orders unless we have completed stock. We will be releasing batches of 10 to 15, so don't miss out. They will all ship within 3 days, considering weekends/holidays

Contrary to the pictures the jig comes with a 12" long 1/4" thick top bar not 14"(seen above). It sits between the 2 top mandrel aligning holes instead of having holes drilled in the bar. This actually makes things easier when dissembling and was the intention all along. Updated pictures soon,sorry for any confusion.

Works With: Cetme model C, H&K G3, C308, PTR/91 and any .308 caliber Cetme Clone (The Spaniards Did it first)

Included:

• 2-part Mandrel and Jig Set
  
• x2 5.5" Bolts 
• x1 steel bar 12"L x 1/4" thick
• Instructions

Specs:

Tensile Strength: 35-50 MPa.

Bending Strength: 68-78 MPa.

Impact Strength (Charpy): 13-17 kJ/m² (significantly higher than regular PLA).

Young's Modulus (Rigidity): 2500-2900 MPa (high). 

PLA Pro is a more robust, less brittle version of PLA, designed for functional parts that need to be strong and sturdy and a little flexible.

Although the material we use is great, it can get better. We want to bring you the best possible quality. We will be experimenting with new materials asap.

• Calculated Force: Based on standard press brake formulas for 16-gauge mild steel, it takes approximately 0.75 tons (1,500 lbs) per inch of bend length.
• Total for Receiver: A standard G3 receiver is roughly 12 inches long. Using the tonnage-per-inch estimate, the total force required to initiate the bend across its full length is approximately 9 to 10 tons.
• Actual Workshop Experience: While the initial bend can require several tons, users often report that the metal begins to move with "very little pressure" once leverage is applied via a jig. Many builders successfully use a 12-ton hydraulic press to provide a slow, controlled bend, though only a fraction of that capacity is typically engaged. 

Warranty/ There is very little room for malfunction, but if your jig is noticable broke or cracked while in use. (Considering the New design offers life after death, with the threaded rods holding everything together, even if there is a crack,) your broken section will be replaced free of charge. Only on the jigs purchased with the steel bar. Within reason and after communication. Up to 3 weeks or the first use.

Receiver Flat Not Included

This is not a receiver