Rubicon Prec.
New member
I just ran a test tenon on a piece of 1.25” scrap 4130. Without asking my wife’s permissiin, I put our waterproof camera inside the turning center on a mag base indicator holder. Unfortunately my aim was bad and I didn’t even capture the part. Also, the microphone is so bad on the camera, sound playback is deafening.
That said, the cycle time was 6 minutes to rough and finish tenon, custom fit thread, Higbee thread start, pre-drill chamber, rough and finish cone breech, and pre-bore chamber. I didn’t run the reaming cycle because this was a solid bar, but the reaming rough op is around a minute. Then another couple minutes to check and calculate final headspace and finish.
Obviously this was just bar stock so there was no set up time figured into it, but I’ve got my method down pretty quick.
I try hard to do things in the order they come in the door, but if I’ve got 5 6CMs that will all use the same reamer, they’re all getting done the same day. If a customer happens o drop one off the morning I’m cutting them, he may luck out and be picking it up around lunch time.
That said, the cycle time was 6 minutes to rough and finish tenon, custom fit thread, Higbee thread start, pre-drill chamber, rough and finish cone breech, and pre-bore chamber. I didn’t run the reaming cycle because this was a solid bar, but the reaming rough op is around a minute. Then another couple minutes to check and calculate final headspace and finish.
Obviously this was just bar stock so there was no set up time figured into it, but I’ve got my method down pretty quick.
I try hard to do things in the order they come in the door, but if I’ve got 5 6CMs that will all use the same reamer, they’re all getting done the same day. If a customer happens o drop one off the morning I’m cutting them, he may luck out and be picking it up around lunch time.