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1/2 -13 tap in a blind hole .75 deep in 8620 CR.
...
Threads are badly galled looking.
15-50 sfm.
1/2 -13 tap in a blind hole .75 deep in 8620 CR.
15-50 sfm. Good flood coolant.
11MM drill.
Lathe with floating holder indicated w/in .001.
Threads are badly galled looking.
Any help would be great.
Where is "Mr. I love MollyDee" these days ?
I'm here, just slow on the uptake. Ms. Moly Dee will give you the best threads you can expect out of shitty cold rolled steel using general purpose taps that you have laying around. I use it anytime I have material conditions that don't yield good threads.
On the downside it stinks like ten day old crotch rot. My stray cat tipped over a jug of it and managed to get that stink all over her... I was hoping she would get sprayed by a skunk to make her smell better. The stench eventually went away, and since she is still alive, I don't think it is nearly as toxic as I used to think. I wonder where that piece of shit is hiding... she brought in a half eaten mouse yesterday and left it in one of the mill stations, so I know she is still alive
Are you using a tap from the hardware?
Those are barely good enough to clean threads.
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