Another Shallow Bowl

[CHJ]

Bubinga, 238mm. diam.
CSS, 3wheel buffed, Microcrystalline wax finish.





A truncated WIP in case it's of interest.

Due to thin Blank and not wishing to lose depth due to mounting spigot or socket, mount on support block with Hot Melt glue, also gives addition chuck side clearance for partially forming rear side. Make sure glue is very hot and bubbling.



Use tailstock centre to align and clamp, use rotating tailstock to support and turn peripheral details in case wood stresses take it out of round as you remove core wood.


Undercut rim asap for same reason, using close rest support and sharp tools, I work with lathe in reverse for this for ease of access and vision.



Remove remainder of core wood, maintaining safety support as long as possible.


Sand to finish and seal.


Part off from wood block and mount on Cole Jaws to work base, using tailstock support as much as possible for increased rigidity.


Sand to finish and seal.


Abrasive Buff finish and wax polish with appropriate mops.

 

[AndyP]

Interesting Chas that you have the bowl on those jaws with the buttons on the inside. I did that once, over tightened and split the bowl. Subsequently I prefer to have the buttons on the outside holding the piece in compression.

 

[CHJ]

As usual Andy, it's a case of experience with subject wood.

Internal clamping with dovetail rubber buttons when you have an internal undercut rim usually only needs the lightest of grips and the use of auxiliary tailstock support to trap the piece whilst heavy cutting reduces any movement risk.

As you say compression is less risky but not always the most convenient for turning sequence or form aimed at.

 

[Phil]

Another nice one.

Thanks for the WIP. Interesting.