Scroll Sawed Wooden Bowls!

Step 5: Choosing bowl dimensions

The simplest way to make a bowl is to cut the rings at a 45 degree angle.  That way, the rings are as far apart as the laminate is thick (see picture below).  I recommend the diameter of the inner circle be at least 3".

If you want to try different dimensions to make unique bowls, grab a calculator or open up excel and follow the steps below (see second picture):

1. Choose a diameter for the inner circle (should be 3-4")......D, cell A2
2. Measure the maximum length/diameter of the laminate.....L, cell B2
3. Measure the thickness of the laminate...................................T, cell C2
4. Choose an angle to cut..............................................................(theta), cell D2
5. Calculate width of each ring......................................................X, cell E2
6. Cut and paste this formula into cell E2:           =TAN(RADIANS(D2))*C2
7. Calculate the number of rings (round down).........................N, cell F2
8. Cut and paste this formula into cell F2:           =FLOOR((B2-A2)/(2*E2),1)
9. Calculate the final height of the bowl.......................................H, cell G2
10. Cut and paste this formula into cell G2:          =(F2+1)*C2
11. Play around with the cut angle (theta) until you are happy with the final height of the bowl.