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Four layers ball #3: Making first hole

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Blog entry by Yuri posted 695 days ago 3247 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 blip.tv – 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

BritBoxmaker

4334 posts in 1631 days


#1 posted 694 days ago

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

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging. http://www.theartofboxes.com

View 489tad's profile

489tad

2203 posts in 1606 days


#2 posted 692 days ago

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

Yuri

54 posts in 2010 days


#3 posted 692 days ago

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 (online now)

stefang

12515 posts in 1929 days


#4 posted 686 days ago

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

REO

577 posts in 669 days


#5 posted 333 days ago

slack jawed and I havent even seen the videos!

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