Boring / Grooving / Threading.

[Xnerd]

I would like to ensure everybody that I have looked everywhere on the damn internet for this and I cannot find this item anywhere. I have seen a few pictures of this type of boring bar but no real information on are they still available to buy or do you have to find old garage sale items xcetera. I got a couple of these bars with some lathe parts that I bought off of Craigslist. I don't know if these are antiquated or not, they kind of look like they are, but they really really work good either way. I do not know what they are made of but they are stiff as all get-out. I really need some more of these smaller ones though.

If anybody has a few of these to sell, please message me. If anybody knows where you can still buy them let me know.



Sent from my SM-T800 using Tapatalk

 

[Bob Korves]

To send pics using Tapatalk you will need to click on the paperclip.

 

[FOMOGO]

Can't help with the boring bar. You can get the pic to appear by clicking on reply, but was wondering if anyone knows how to delete the reply without posting? Thanks, Mike

 

[Wreck™Wreck]

That looks ancient to me and I have been at it for awhile
HSS or carbide tooling?

 

[Big Bore Builder]

Reload your photo, I am seeing a big red X.

I have a lot of old boring bars and I have seen many others over my 55 year machining career, so If I can see your photo I may be able to help.

 

[Wreck™Wreck]

This is the picture

 

[Big Bore Builder]

I have a few like that but without the depth markings. You can buy them from most suppliers.

Are you interested in the depth markings? Put them in your self with a sharp V tool in the lathe. Hand stamp the numbers.

Or, is it the style of the tool bit holding?

I have several that I made. A piece of 4140 round stock, drill the holes, square them up with a file.

I will take a few photos and later post.

I control depth with a dial indicator on the lathe bed. Indicator point on the carriage.

 

[Big Bore Builder]

Photos:

A few of the boring bars in the shop. Several more are on the machines.




Bits ground for each bar; small guys on the top row are 1/4" and 3/16".




Top one is a 1" I made from a Thompson linear bearing rail. Nice alloy and it is case hardened.



Middle is a 3/4" I purchased from Enco.

Bottom is a 3/4" I made from a length of 4140 shafting.

End view:




Square stock drilled for 3/8" and 1/2" bars. They go in the 4 Way tool post in the background.



They will also take the carbide tipped bars:




And the Holy Grail. Everede bars that take a triangular bit. Real easy to grind the bits and the angles are built into the bar.



This Everede set is from the early 1960's. You know it is quality when the set comes in a wood box!




The shop made 3/4" in action. Cutting oil grooves in motorcycle con rods. The jig was handy, I had 30 to do. Note the dial indicator for depth control.



Boring a sprocket with the shop made 1" bar.

 

[Big Bore Builder]

Check Grizzly:

http://www.grizzly.com/boring-bars

 

[4GSR]

I have my original set of Everede Boring bars I bought back in 1978, they came in a cardboard box!
I've added a lot more of them to my collection over the years, too.