First time using my 1” boring bar

[Janderso]

I ordered some brass tipped allen head socket screws.
It came out good. Nice fit on the spindle.
Just for kicks and giggles I’m showing off my BS-0 dividing head that I used for direct indexing to place the holes.
120 and 90 degree pattern. Sure makes it quick and simple.

 

[Janderso]

Nice. I have learned just enough to realize that hitting your numbers with a boring bar is a step up from hitting OD numbers.
It is uniquely satisfying to me.
A great big 'ol boring bar is a help no other tool can provide.

It seems like I can measure the ID five times with the telescopic measuring tool and come up with five different readings.
OD is much easier for this novice.

 

[woodchucker]

You know what they say..
Size does matter
Is that a carbide bar? It seems to say carbide on the beginning or am I reading into it?
Do you ever get tired of reading Prop 65 on the labels? According to the State of California life can cause you harm.

 

[mikey]

It seems like I can measure the ID five times with the telescopic measuring tool and come up with five different readings.
OD is much easier for this novice.

Get yourself a mic stand and a ring gauge to practice with. The stand makes a world of difference and the ring will build your confidence.

 

[Janderso]

Jeff, you should try out some of my Bokum boring bars, I have a liberal collection of them available, the ends screw onto homemade bars that you can make yourself, look them up online to get an idea of the design.

John,
I found one of the Bokum heads.
I think i’ll make a bar.
Any idea about this thread?
I measure .658 Id and it looks like 20tpi.
I don’t see that thread.

edit, on the other hand, this looks like it’s almost at the end of it’s useable life.

 

[Dabbler]

The McMaster part number for the 1” is 32435A18.

Thanks!

 

[RandyWilson]

ID of the threads? Or the counterbore? If the threads, then it's likely M18 x 1.5 or 1.25. It looks more 1.5 in the pic, but 1.25 is very close to 20tpi.

 

[Kevin T]

That spider is a cool tool I did'nt know I needed! lol I have a good donor part to use as a base from a failed first attempt at a collet closer. I had too much work in it to throw it out. Now I know what to do with it! Thanks.

 

[mickri]

Spiders are nice to have. I made one for my lathe. Not hard to do.

Jeff I used to have the same problem measuring ID. I watched more videos than you can shake a stick at on measuring ID's. Then I noticed in one video where the guy used his thumb to keep the telescoping gage in place as he moved the gage. Since I started doing this I now get consistent ID measurements. Having a micrometer stand also helps. Mine is a mag base with a clamp to hold the micrometer.

 

[Janderso]

ID of the threads? Or the counterbore? If the threads, then it's likely M18 x 1.5 or 1.25. It looks more 1.5 in the pic, but 1.25 is very close to 20tpi.

Metric?
I’ll check.