Here is another idea on what you can use in your building. Around here we still have several competing telephone yellow pages companies dropping phone books off on a yearly basis and they will have stacks of them free for the taking at places like tag agencies.. I save them and find them to be perfect for weighing down balsa wing skins. The form to the wing and apply equal pressure and there are no sharp edges.
Last edited by FlyerInOKC; 08-08-2016 at 08:00 AM.