Thread cutting lube

[pipeclay]

Just be aware as the depth of thread increases you need to decrease your progressive depth of cuts.

As a very general rule the first pass can be at upto 50% thread depth,with the second being 50% of the first cut and the third being 50% of the second,then generally after the third pass the doc may go down to only .002/.003" and then reduce further to only .001" per pass untill to finished depth.

Any advanceing of the compound,should be in a ratio to the infeed.

Myself I normally when using the plunge method start advancing the compound when I get to withing 95% of thread depth,and most of my compound advance is done after reaching full depth,and then no more than .005" to start with and then reducing to no more than a .001" with progressive cuts.

As said this works for me,but may not be by the *(BOOK) or work for others.

[azzrock]

well described. the 95% thread depth sounds more like it. i havnt cut many threads latly. running over the thread a few times at the end at the same depth can help aswell.

[Anorak Bob]

I use trefolex.... Yea yea, I know it will kill me and make baby jesus cry... But then apparently so will beer, mobile phones, x-rays, ct scans, aircraft travel, meat, and about everything else.. For the half a dozen times a year I might use it, I will take the risk..

I have always loved the smell of Trefolex. My grandfather used the stuff. He checked out at the age of 94.

[azzrock]

I use trefolex.... Yea yea, I know it will kill me and make baby jesus cry... But then apparently so will beer, mobile phones, x-rays, ct scans, aircraft travel, meat, and about everything else.. For the half a dozen times a year I might use it, I will take the risk..

not beer

[morrisman]

Before you start drilling holes make yourself aware of how the threading stop works and fits to the cross slide,there are no holes.

Ok but I think there is a tapped hole in the cross slide end . The screw threads into it , and as you move the cross slide forward to the indexed position, the screw holds it there in that position .....I might be wrong

Lots of opinions and advice .... I will read it all and take it all in.

MIKE

[pipeclay]

The Screw in the face of the Stop is for adjusting the position the cross slide returns to,it hits against the end of the cross slide.
The screw in the side/end of the stop is to lock the stop onto the cross slide.

[Dave J]

I use trefolex.... Yea yea, I know it will kill me and make baby jesus cry... But then apparently so will beer, mobile phones, x-rays, ct scans, aircraft travel, meat, and about everything else.. For the half a dozen times a year I might use it, I will take the risk..

I have a 500ml tin I picked up years ago, but only use it for tapping. It's in a green checkered type tin.
Nice and runny in the summer, but thick in the winter months..

Dave

[Bryan]

Is the spray can stuff any better or worse? Health wise I mean.

[Anorak Bob]

Don't know Bryan. It goes everywhere and doesn't have the nice smell.

[jhovel]

You can still get Trefolex Welcome to Trefolex Industries, INC. - and .RC., it looks pretty harmless on the MSDS, actully.: http://esvc000350.wic042u.server-web...f/Trefolex.pdf

[Dave J]

I believe they changed the formula a while back going by what I read on some other forums. My tin is an old one I picked up and isn't packaged the same as those ones.
The stuff is not supposed to work as good from what I read.

Dave

[Oldneweng]

Don't know Bryan. It goes everywhere and doesn't have the nice smell.

Damn, you mean I have been missing out on an experience cos I only have the spray? I use for drilling and hand tapping and makes a noticable improvement.

Dean

[BobL]

You can still get Trefolex Welcome to Trefolex Industries, INC. - and .RC., it looks pretty harmless on the MSDS, actully.: http://esvc000350.wic042u.server-web...f/Trefolex.pdf

While it looks harmless on the MSDS that is really only the case when it is used according to instructions and that is using hand tools or slow speeds. As soon as the cutting tools get too hot, trefolex decomposes and some of the decomposition products will make your eyes water and nose run - I have experienced this - it's not nice and apparently not good for you either. I can't remember if the noxious decomp product is CN or OCl based or both. This hasn't stopped me using it on slow speeds on gun taps as it really is amazingly good.

[morrisman]

Neatsfoot oil would be a good option I think but only the pure stuff , 100% . Most horse places sell a compound of mineral and animal oil which isn't pure .

The pure stuff is made from 100% cow fat ... probably why it works like the lard they used for thread cutting years ago.

MIKE