PM 1228 left hand threading

[markba633csi]

Spam and eggs for me please!

 

[darkzero]

All buss up too much Okolehau

I had to look that one up.

 

[Aukai]

then....

 

[Winegrower]

But seriously, folks...my first task at the railroad museum was to help repair the old Ford tractor. It had a water pump shaft that had been worn in two where it passes through the front grill, or something like that, can’t recall exactly.
There was a left hand thread on one end, and while I had never cut one, my old Logan has a lever to spin the lead screw the other way, so I did that and cut the thread left to right, otherwise exactly as normal.

There is no need to use an upside down tool as was mentioned previously.

 

[darkzero]

There is no need to use an upside down tool as was mentioned previously.

I believe the upside down LH tool mentioned previously is to still cut a RH thread but away from the chuck (left to right). Threading away from the chuck with a "conventional" tool is normally how a LH thread is cut.

I only run my internal threading bar upside down, but it's a normal RH tool & I cut on the backside of the bore, right to left, normal spindle rotation, RH thread.

 

[Winegrower]

I no longer see the post that discussed upside down tools. We are in complete agreement in any event.

 

[darkzero]

Post #2. I had to do a double take too.

 

[darkzero]

Spam and eggs for me please!

They have it at MickeyDs too!