Metric Threading on Standard Modern 1334-MIL

[SteamWilly]

Because they’re paying you isn’t a good enough reason? I’ll gladly take those customers from you if you are unwilling to learn how to thread metric. Most of what I do is metric, so it makes no difference to me which system someone wants to use, their money is green either way.

Anyone I can't convince, is very welcome to go see you. The green they give you will NOT pay for the time you waste on metric threads. Unless you have production machinery, I wish you luck with that business effort.

 

[Ischgl99]

Anyone I can't convince, is very welcome to go see you. The green they give you will NOT pay for the time you waste on metric threads. Unless you have production machinery, I wish you luck with that business effort.

The time difference between metric and Imperial threads is negligible when you know what you are doing. Send those customers my way!

 

[epanzella]

Being as the OP asked for help with a metric thread, I don't the answer is telling him to convert to a different thread. That said, the reversing lever is only to reverse the relationship between the spindle and the leadscrew. This should not be touched for this process.
1. turn on the motor in forward to make a pass
2. stop the motor at the end of the pass
3. back out the cutter
4 reverse the motor to get back to the beginning of the cut.
5 re-engage the cutter with the work
6 turn the motor on in forward to make another pass.
rinse, repeat. You never touch the reversing lever or the half nuts. The back lash will take care of itself as you are always cutting in the same direction.

 

[nabison]

Tailstock4 and epanzella, were correct, their process worked. I owe you a beer.

The threads were a little fugly, but the mating part (which i was unable to covert to imperial) threaded in just fine and the O-ring should seal.

Many thanks for getting me out of this jam. This was a big customer (household name) and there was no way i was gonna turn them away.

I just got a used Haas TM-1...i think its time to figure out thread milling...

Thanks again fellas (mine are the aluminum threads on the left)

 

[SteamWilly]

Tailstock4 and epanzella, were correct, their process worked. I owe you a beer.

The threads were a little fugly, but the mating part (which i was unable to covert to imperial) threaded in just fine and the O-ring should seal.

Many thanks for getting me out of this jam. This was a big customer (household name) and there was no way i was gonna turn them away.

I just got a used Haas TM-1...i think its time to figure out thread milling...

Thanks again fellas (mine are the aluminum threads on the left)

Glad you got it to work out!

 

[Ischgl99]

Tailstock4 and epanzella, were correct, their process worked. I owe you a beer.

The threads were a little fugly, but the mating part (which i was unable to covert to imperial) threaded in just fine and the O-ring should seal.

Many thanks for getting me out of this jam. This was a big customer (household name) and there was no way i was gonna turn them away.

I just got a used Haas TM-1...i think its time to figure out thread milling...

Thanks again fellas (mine are the aluminum threads on the left)

Are the threads on the part on the right tapered, or is that just camera distortion?

 

[nabison]

They are in fact straight...i had to check, because the camera sure makes them look tapered!