RE: Model Aircraft Starting Bench (GSWAM Style)
I used one size of wood to make the bench easy to build and reduce the waste from scraps. I didn't want to need to buy different sizes of lumber.Also, the first benches we built were of a different design and the wood was too light, which caused a tipping forward problem with the bigger engines. This bench will not tip forward with most engines.
I don't know if you will get much of a weight loss by reducing the wood size on the top. If you have wheels, I don't think you will notice much difference. On thing to consider is that there may be a problem with PN 6 since it is long and does not have a lot of support at the tail end.