I was hoping that someone with direct experience would respond on this and they still might, of course.
In the meantime, get out your pack of smallest drill bits and, one at a time, hold up a drill bit, side by side with the screw, for comparison. You need a pilot hole that is a smaller diameter than the the outer edge of the screw's thread and larger than the solid shaft of the screw. This will enable the screw thread to bite into the plastic without its solid shaft breaking the post apart. If in any doubt at all, choose a drill bit that is slightly too small, as you can easily drill out a little more but it is harder to rebuild the post if too much is drilled out.
If you do mess up, Dennis's link is the place to go and it's a good idea to reinforce any post BEFORE screwing into it.
I'll check this subject out more thoroughly this evening if no one has added to it.
In the meantime, get out your pack of smallest drill bits and, one at a time, hold up a drill bit, side by side with the screw, for comparison. You need a pilot hole that is a smaller diameter than the the outer edge of the screw's thread and larger than the solid shaft of the screw. This will enable the screw thread to bite into the plastic without its solid shaft breaking the post apart. If in any doubt at all, choose a drill bit that is slightly too small, as you can easily drill out a little more but it is harder to rebuild the post if too much is drilled out.
If you do mess up, Dennis's link is the place to go and it's a good idea to reinforce any post BEFORE screwing into it.
I'll check this subject out more thoroughly this evening if no one has added to it.
