Hi fellow Valley-ian Kimber,
If you do a Forum search on ABS you will find several links to ABS discussions, including the one
here. I suggest asking somebody to give you one first before going to the considerable trouble of making them yourself.
Oh, just call me and I'll give you one. I have to add, though, that every time I give one away it's as if they get frisbeed into the Grand Canyon. I never hear back as to whether they get used as painting supports, chopping blocks or birdcage liners.
You know who you are.