tumbling block cutting board

[Barry wines]

I have seen some tumbling cutting boards on several woodworking sites and would like to make a set of them for my future daughter-in-law. Some of them look like the blocks are square and one of them has blocks that are rectangular. Can someone give me some cutting angles or a pattern. Thanks

[Chris Padilla]

http://lumberjocks.com/projects/21783

I didn't know what this was, Barry, so I Googled it. Cool stuff! Looks like a clamping nightm...I mean challenge!

The inside angles of the diamonds are 60 and 120 degrees.