I was browsing turned wood images and saw a unique bowl made of slats that seemed to protrude from the brim. My first thought - How can I turn that bowl? After pondering several alternatives, I had to go for it. Now after making one, I have to change my process.
First, here's what I did. 1. Milled 11 slats 0.5" thick, 2" wide, and about 8" long. 6 of walnut and 5 of oak. 2. Alternated the slats and clamped them together. 3. Prepared a waste block for the top and bottom. In this case, I sanded some scrap OSB since I needed a perfectly smooth surface. 4. Applied white glue to the waste panels and clamped them to for a sandwich. Let dry overnight. 5. Mounted the sandwich to a wood faceplate with double stick tape and live center pressure. 6. Turned the exterior. Here's where I had problems. Sanded and finished. 7. Split apart the sandwich. It easily pulled apart. 8. Reassembed the sandwich offsetting every other slat by about 1/2" by eye looking to reform a visual curve. 9. Glued the slats together. Let dry overnight. 10. Glued to a wood faceplate to the bottom. 11. Hollowed the interior and applied finish. 12. Parted off the bowl from the faceplate. This was scary. 13. Sanded a slight hollow to the underside and applied finish.
What I learned from this project is that the slats need more support side to side. In future projects, I will glue the slats together with a paper joint or double stick tape. Something that will come apart, be easily cleaned up and re assembled.