TORSION boring bar set

[@MrArray1967]

I bought the same _Small Hole Boring Tools_ kit from _Hemingway Kits_ a long time ago now. I might have some projects coming up sooner or later, so I thought someone else must have done this already and searched on RUclips. Bingo there your two videos were. Splendid!
Thank you🇬🇧🇩🇰

[@gospelman7222]

Very good, Alan - I'm looking forward to the next video. I wish you a very happy New Year.

[@enotsengineering]

Happy new year to you too

[@steved8038]

Thank you that was extremely interesting, looking forward to the next part. Wishing you a happy new year.

[@enotsengineering]

Hi Steve happy new year to you

[@jrkorman]

A nice project!

[@enotsengineering]

Thanks!

[@TheKnacklersWorkshop]

Hello Alan,
Another interesting video, looking forward to part two. Many thanks for all your videos in 2022 and wishing you a Happy New Year,
Take care.
Paul,,

[@enotsengineering]

Thanks Paul happy new year

[@daniloagostini4156]

Brilliant job mate!

[@enotsengineering]

Thanks

[@sambannister6078]

Good video thanks

[@enotsengineering]

Glad you enjoyed it

[@GenePavlovsky]

Was looking at this boring bars kit, nice to see some videos about making them! One thing I didn't understand in this video. You used a regular drill to make counterbores for the heads of the clamping bolts. So the counterbores don't have a flat bottom, the bolts/washers will only contact the counterbore on the outer circle, is that fine? Why didn't you use a normal counterboring bit, or a regular bit followed by an end mill?
Looking forward to part 2...

[@enotsengineering]

Hi Gene the washer is a spacer so you don’t need to make a flat bottom to the hole. The bolt should never touch the bottom of the hole.

[@GenePavlovsky]

@@enotsengineering yeah I understand but why not make the bottom of the home flat (I mean perpendicular to the bolts axis)? Or face the bottom surface of the washer with a taper that matches the angle produced by the drill bit?

[@enotsengineering]

Hi Gene maybe I didn't make it clear.The washer is a spacer to ensure the bolt face is clear of the bottom and removed after machining. The bolt face should not go near the bottom of the hole as it locks up on the boring bar.So you don't need it flat?

[@GenePavlovsky]

@@enotsengineering After watching your second video I finally figured out how this clamping system works. Initially I thought that the clamping bolts just push on the bar from the side. Now I understand that when drilling the hole for the boring bar in the holder, the clamping bolts also get drilled. Then when the boring bar is inserted, it goes through the holes in both the holder and the clamping bolts. To clamp the bar, the nuts are tigthened, pulling the bolt towards them and strongly locking the bar. Using these 3/64" (~1.2 mm) thick washers during boring bar hole drilling ensures that there's enough space for the bolts heads to allow for tightening.