Mandrel issue

[Rickhogan]

I have a PSI 1" 8tpi screw in mandrel. It works great and seems well made.

The mandrel shaft (threaded on both ends) has this nasty habit of coming unscrewed from the live stock end when turning (mostly when rounding a new blank or sanding.) The threads on that end appear to have grease/oil on them. I was going to use brake clean or something similar to remove the lubricant, and put a fit of loctite blue on the threads to keep it solid but not permanent.

Anyone see any problems with this?

 

[gimpy]

Nope, I don't see an issue
You may also want to maybe try putting a nut up against
the other nut

 

[qquake]

I too don't see a problem with this. However, I prefer a Morse taper adjustable mandrel or 1/4" collet chuck.

#2 Morse Taper Maxi-Mandrel

#2 Morse Taper Maxi-Mandrel#2 Morse Taper Maxi-Mandrel - This new mandrel features a 7mm mandrel shaft that slides through a headstock collet. This feature guarantees a perfectly concentric pen. The mandrel easily adapts to different length projects. Simply mount your tubes and bushings then slid

www.pennstateind.com

 

[jcm71]

That was my solution. Go for it.

 

[BULLWINKLE]

I prefer the "mandrel saver" from PSI. And both sides are Morse tapered.

 

[MedWoodWorx]

I have a PSI 1" 8tpi screw in mandrel. It works great and seems well made.

The mandrel shaft (threaded on both ends) has this nasty habit of coming unscrewed from the live stock end when turning (mostly when rounding a new blank or sanding.) The threads on that end appear to have grease/oil on them. I was going to use brake clean or something similar to remove the lubricant, and put a fit of loctite blue on the threads to keep it solid but not permanent.

Anyone see any problems with this?

Try a bit of thread glue

 

[hallelujahal]

I have a PSI 1" 8tpi screw in mandrel. It works great and seems well made.

The mandrel shaft (threaded on both ends) has this nasty habit of coming unscrewed from the live stock end when turning (mostly when rounding a new blank or sanding.) The threads on that end appear to have grease/oil on them. I was going to use brake clean or something similar to remove the lubricant, and put a fit of loctite blue on the threads to keep it solid but not permanent.

Anyone see any problems with this?

Go for it… should sort the problem. Acetone to remove the grease then loctite blue should be sufficient