You may experiment with different method.
However, even two parts epoxy and other strong glue, when use on oily wood
require mechanical fastening devices like screws and joinery to make a
permanent bond. However gluing small segments of wood with no stress or
load appear to work satisfactory.
A good example is segmented bowl turning.

"James Krzanowski" wrote in message
...
Maybe I'll do that - cut into two, cut out the cracked sections, resurface
the faces in my planer, and then glue them back together. A somewhat
smaller bowl, but probably safer to turn?
A while back I was taking a woodturning class, and while scraping the
outside of a bowl it literally exploded - I never did find all the pieces.
I think maybe I would like to avoid that again if possible.

wrote:
Here is my 2¢ worth.

Every type of wood appears to behave differently.

In many cases, filling a hairline cracks with the appropriate glue gives
satisfactory results. Each case has to be handled individually.

I at one time was turning cherry wood and part of it flew off. Luckily,
I was wearing safety goggles. In hindsight, I should have been wearing a
complete face shield.

Since then when I turn cherry and oak blanks, I hunt for hairline cracks
first. If I find a hairline crack, I use the blank for something else.

Several times, after finding hairline cracks in cherry, I have split the
blank in two halves and glued them together.

Then after turning the glued blanks, the results were not too
satisfactory. I hate to discard cherry blanks with hairline crack but
safety comes first.




"Darrell Feltmate" wrote in message
news:VOThh.90404$rv4.14108@edtnps90...

James
There is no one answer in a case like this. Personally I would likely cut
along the crack line and use the wood for something else. I have tried
the other route and have never been happy with the results. I would
rather work with a wide crack as a design feature than a hairline, but
that is just me. This is personal business.
If you go the route of using thin CA to stabilize the crack and then
turn, continue to use the glue as you turn the bowl. It may have wicked
all the way in first time but then agian it may not. Remember that it
will show up in a wood like maple and that many finishes will make it
even more obvious.
Which ever way you do it, the turning will be fun. Nothing to lose so go
for it.


--
God bless and safe turning
Darrell Feltmate
Truro, NS Canada
www.aroundthewoods.com

"James Krzanowski" wrote in message
...

I have a maple bowl blank that is 8x8x4 in size. The probelm is there
is a hairline crack that has appeared on the end grain. It runs from
the top surface to the bottom near the center of the piece. On the top
and bottom surfaces, the crack extends about 2 inches in on one side and
one inch on the other. If the crack was to further extend through the
piece, I would roughly end up with two 4x4x8 blanks.
Should I (1) proceed with the bowl turning anyway or (2) Cut it into the
4x4x8 pieces and do something else with it? If I go the bowl route, what
precautions should I take? Thanks