This has been my first form 1 and has been great fun. All work was done on <span style="font-weight: bold">manual</span> machines, since thats all I have access to. Started out with baffles first. Cut my 1.5" 304 bar into 1.200" sections. Put them in the lathe and faced both ends, then drilled the bore. Flipped them end for end and with the compound set at 30deg, cut the inside cone and the step for the spacer tube, which is 6al4v titanium. after all four went through this step. I then set up my mounting fixture and cut the steps. I turned down to my last step and once all were done, the baffles were removed from the fixture, mounted in the chuck, aligned on a center, and the 20deg angle cut on the first step. Forget to add that the baffles mouths were faced and then a small bevel milled into one side for gas deflection into the the next chamber. Baffle walls are .080" at the thinnest point.
I then cut my barrel end cap (6al4v Ti) and made a false barrel end, which as you will see later, is used for mounting on the mandrel.
I then cut my muzzle end cap (6al4v Ti)
Next was the blast baffle (304 stainless) which has rings and slots on the face. Wanted to cause some turbulance here. Backside is a 60deg funnel.
Here are all the parts together. All spacers are 6al4vTi and all the baffles are 304 stainless.
All the pieces were assembled onto the mandrel and compressed with the locknut on the end. The mandrel was ground so that all pieces are tight and therefore centered on the mandrel. I then mounted the mandrel in the four jaw and a live center, dialed it in and outside turned the entire stack, with the exception of the steps on the end caps, so that it was a slip fit in the outside tube. This left the walls of my spacers at .045" and the outside tube is (6al4v Ti) .035".
I then cut the length of my outside tube .040" longer than the gap between my end cap steps. With the outside tube slid over the stack and the nut tightened, this insures a nice tight compression between the end caps and the outside tube.
Finally, the entire can mounted on the mandrel and ready for welding the end caps to the outside tube.
All that remains is get the tube engraved Monday morning, and then to the welder Wed. morn. I will then pull it off the mandrel and do the final line bore for finish bore diameter. Bead blast it and test fire.
<span style="color: #3366FF"> answers to ??
have not weighed it yet
length is approx 9.3" x 1.5" dia.
Cal is .308, but will prob get used on my 7WSM most.
Threaded 5/8x24</span>
Thanks for reading
<span style="color: #FF0000"> <span style="font-weight: bold"> NEW PICS BELOW</span> </span>
I then cut my barrel end cap (6al4v Ti) and made a false barrel end, which as you will see later, is used for mounting on the mandrel.
I then cut my muzzle end cap (6al4v Ti)
Next was the blast baffle (304 stainless) which has rings and slots on the face. Wanted to cause some turbulance here. Backside is a 60deg funnel.
Here are all the parts together. All spacers are 6al4vTi and all the baffles are 304 stainless.
All the pieces were assembled onto the mandrel and compressed with the locknut on the end. The mandrel was ground so that all pieces are tight and therefore centered on the mandrel. I then mounted the mandrel in the four jaw and a live center, dialed it in and outside turned the entire stack, with the exception of the steps on the end caps, so that it was a slip fit in the outside tube. This left the walls of my spacers at .045" and the outside tube is (6al4v Ti) .035".
I then cut the length of my outside tube .040" longer than the gap between my end cap steps. With the outside tube slid over the stack and the nut tightened, this insures a nice tight compression between the end caps and the outside tube.
Finally, the entire can mounted on the mandrel and ready for welding the end caps to the outside tube.
All that remains is get the tube engraved Monday morning, and then to the welder Wed. morn. I will then pull it off the mandrel and do the final line bore for finish bore diameter. Bead blast it and test fire.
<span style="color: #3366FF"> answers to ??
have not weighed it yet
length is approx 9.3" x 1.5" dia.
Cal is .308, but will prob get used on my 7WSM most.
Threaded 5/8x24</span>
Thanks for reading
<span style="color: #FF0000"> <span style="font-weight: bold"> NEW PICS BELOW</span> </span>
