Changing the size of bowls

I came across a question on the scroll saw forum recently about changing the size of a bowl. If you're considering do this, please remember that when you enlarge or reduce a bowl pattern, you are also changing the width of the rings. Since the width of the rings is one of the factors that determines the cutting angle, you must re-calculate the cutting angle so your rings will stack properly.

If you have the bowl book, you'll find an easy to use formula in the Appendix. If you don't have the book, try the AngleCalc utility on scrollmania.com, adding a degree or two for safety.

And if you really get stuck, drop me a line and I'll help you figure it out. No point in wasting good wood if you don't have to!

A Suggestion for Elegance

I've been playing around with veneer, as a less expensive alternative to thin wood, and am pleased with the results. If you want to dress up a basic bowl, cover your blank with a layer or two of veneer, gluing it up well, then cut as usual. The thin lines between layers gives a totally different look for very little extra work. Just be sure that your blank is flat so the layers can adhere properly. If you want to use your bowl press, cut the blank oversize, but small enough to fit in the press, then clamp it tightly.