Four layers ball #3: Making first hole

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Blog entry by Yuri posted 08-26-2012 12:22 AM 6381 reads 2 times favorited 5 comments Add to Favorites Watch
« Part 2: Tool bit Part 3 of Four layers ball series no next part

I’ve got everything i need to make a first hole.

I used some video here, advertisings are not mine, they are part of – video hosting web site, sorry…

I have some liquid grip leftover, so I used it on the chuck instead of double side tape
Aligning the radius turning jig

Setting the other axis
Visual inspection

Measuring the depth bit has to dive in.
Making first hole.

Hole made on the end grain side of the ball

Close look

Two holes

I did not do any sanding or cleaning, the cuts you see are straight from the bit.
Drilling holes takes less time then to setup ball in the chuck :)

-- Live to Learn

5 comments so far

View BritBoxmaker's profile


4611 posts in 3544 days

#1 posted 08-26-2012 04:37 PM

Wood engineering at it’s finest. Splendid job, Yuri.

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging.

View 489tad's profile


3650 posts in 3519 days

#2 posted 08-28-2012 10:12 PM

Yuri, intersting project. I can’t tell from the picture or videos what type of tailstock is holding the boreing bar. Your swiinging something off the bed of the lathe so it must be supported or the bar would tend to bend down behind the tool holder. Your holding the carriage to depth with your left hand and moving the boreing bar with your right. Is there any support for the drill chuck? I went back to look at your other projects, they are fantastic. I still can’t see how your swinging the boreing bar. Thanks

-- Dan, Naperville IL, I.G.N.

View Yuri's profile


55 posts in 3923 days

#3 posted 08-28-2012 11:55 PM

Dan, on the second video you can see how i’m swinging the “boring bar” using the modified radius turning attachment . I modified taig’s tool post to fit the attachment and to have boring bar leveled/centered. Drill chuck is used as a handle. I was not sure if the whole system will work so I didn’t bother making a longer handle. The tail stock from the first picture is actually removed completely during turning (i used it only to adjust centers)

$20 attachments pointed with blue arrows, two red arrows shows the modification i made to raise boring bar to appropriate height. “red thing” on the top-right corner is the shape of the tool post

-- Live to Learn

View stefang's profile


16732 posts in 3842 days

#4 posted 09-03-2012 07:30 PM

Brilliant Yuri! I am really impressed with the clean cuts on the pictured balls. I really like your cutting tool too. I might try making some from some of the spade bits I never use. I haven’t given up on the Chinese balls, but I am currently exploring marquetry type work and having fun, so it may be awhile before I come back to the balls.

I realize that I will never get such a good cut as on yours with handheld tools, but I may discover a way to provide better support. But again, my first priority is to make some better quality cutters.

I haven’t given up on the Chinese balls, but I am currently exploring marquetry type work and having fun, so it may be awhile before I come back to the balls.

-- Mike, an American living in Norway.

View REO's profile


929 posts in 2582 days

#5 posted 08-23-2013 02:30 AM

slack jawed and I havent even seen the videos!

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