Tell us about yourself!
Did you read the instructable or just look at the pictures. He sure did credit the original design to the above mentioned "colin" with minor changes of his own
You can run 7018 on ac not recommended in data sheet but there is a 7018AC rod. I would stay away from 60 series rods for something like this although the tensile strength rating is high i have found they are a very brittle weld in comparison and with all the expansion and contraction i would stick to 7018 they run nice too.
And for DC 7018 hands down.
I was thinking the same thing. Some angles or radius shapes maybe. I used to be a professional woodworker for about 12 years and I loved working with veneer also cool project.