Tap brass oil

[AWSubie]

Post pictures of the knob! Inquiring
Minds want to see!

 

[jonathentyquan]

What kind of oil do I supposed to use to tap brass? Nox Vidmate VLC

Maybe tell us more about you're doing?

 

[Mike1955]

Jonathan I had just about given up and ordered one with correct threads. You know how much trouble to sit down and order, especially one thing. Back to what I was doing….my shifter knob was broken on a little cat tractor I bought. One brand new came with it in a pack brand new. My shifter has three eights fine threads. The new knob has course threads. I got a tap and I cannot get it to start and tap it to the fine threads. So I’m on the fence as to just buying the new, I’m also at the drawing board as to how to tap the fine threads over the course threads I ask YOUR thoughts. Thank you

 

[rangerfredbob]

Dumb question possibly, but what quality of tap? A good tap bought in a single pack at a hardware store or one of the cheap sets from Harbor Freight or something? I just tried to tap steel to 3/8" fine with one of the taps from the dedicated Standard tap sets from Harbor Freight and it made some threads but the steel wore down the tap. The 3/8" fine tap from their metric/standard set was LEAPS better and works as taps are supposed to, even looked better...

Starting a bottoming tap in an already threaded hole is goin to be a pain, you need a good standard taper tap

 

[Mike1955]

Well it was a bottoming tap in a set from harbor freight. I think the drilling size is one sixtyforth bigger than a five sixteenth which is what I have. I wasn’t going to tell that and just see what posts I would get on here! So the problem is I don’t have proper stuff. And I trying something I shouldn’t be doing. But sometimes I hit it just right and it works. Thanks

 

[Beaver Cove Deere]

What kind of oil do I supposed to use to tap brass?

You don’t need to use any oils cutting brass by blade, endmill, threading or drilling. I loved machining it letting the chips fly.

In fact when drilling the bit prefers a 0degree or slight flat face on the cutting edge.
Brass loves to catch so clamping is not a stupid move depending on what you’re doing.