When I make a front end it must be solid no tubes I turn up the tig but weld stick with it. My five footer is solid as well as the yard art apparently even the yard art has to be safe. The next one when it is time to build it will be based upon the trees I get for the base there is one thing for sure I would rather use old trees instead of making them myself for they are solid as well and drilling through them is a very painful, time consuming operation