|
Plastic screws and labelling may work for a while, if they are UV stable, but eventually these fall off or get pushed off as the bark grows out. In Botanical gardens that use signage on trees, the signs are removed on a regular basis (every couple of years) and the screws are replaced with fresh screws and in a different position. One of the problems is the screws start to corrode at the junction of bark and screw. (unless they use stainless, but these eventually get grown over as well) The sign falls of but the threaded part of the screw which is in the much less corrosive environment of the timber itself stays for much longer. These can make a hell of a mess of a chainsaw when one is hit, not to mention the danger that puts the operator in.
|