Making a "Jig-Bore" Style Boring Head

[@bcbloc02]

Projects breed projects!

[@EngineersWorkshop]

Tell me bro', hope all is well with you!

[@homemadetools]

Nice work. We shared this video on our homemade tool forum last week 😎

[@EngineersWorkshop]

Thank you, this got me a lot of views! Is it OK to post Pt II, I'll be releasing tomorrow?

[@RustyInventions-wz6ir]

Nice work sir. Good machinery. Good video

[@EngineersWorkshop]

Thank you for your interest!

[@terrycannon570]

I like the music. I listen to a You Tube called harp blues in my shop. Nuce job on the boring head. Nice looking K&T

[@EngineersWorkshop]

@@terrycannon570 Always looking for good music. Copyrights are the issue, gotta stick with the free stuff.

[@johnlee8231]

Looking forward to seeing this making chips.

[@EngineersWorkshop]

Me too, hoping for good results.

[@mfs5493]

Please tidy up that "workshop"!

[@EngineersWorkshop]

Quotes, eh? We're working on getting walls enclosed... time and money my friend. The filth keeps coming until we're finished. The clutter, however, is on me.

[@mabmachine]

Wouldn't you maintain your reference by just being sure you keep the same flat against the stationary jaw of the vice when its flipped over?

[@EngineersWorkshop]

Yes, but i solved this by milling the flats until they were tangent to my indicating boss on top side. I'll show this in the next video.

[@garychaplin9861]

Why did you not just mount a boring bar in the horizontal position of the boring head, that's what it's there for.

[@EngineersWorkshop]

The extra mass is supposed to improve finish. I need every advantage, the weld cleanup is an interrupted cut.

[@garychaplin9861]

@@EngineersWorkshop I will be interested to see if it does make a difference. I think it likely that the extra distance that the cutter is from the spindle will tend to counter act the effect that the extra mass provides. As a side comment, the joint between the shank and the main body of the Bridgeport boring head is a fine thread and is probably the weakest point of the boring head. I agree with your opinion that they are a nice head to use but in my opinion, not a good head to use for heavy or interrupted cuts.

[@EngineersWorkshop]

@garychaplin9861 Interesting. When i look close i see where there might be a parting line at about a 7/8" diameter. My shank is turned down to 3/4" past it. Long term i'd like to make a shank sleeve held on by a cap screw that increases the size to 1-1/4" or so. Won't be able to use it in the 2D then, but my Rosenfors mill has 50 taper holders for bigger stuff.