“Unfortunately the heads of the screws twisted off when screwing them into the wooden display shield. I was able to get one out with pliers, but one had insufficient protrusion to get at and has ruined the very expensive shield. Very disappointing.”
I'm sorry to hear this, providing the screws are fitted as per the supplied instructions (with a 2mm pilot hole at least the depth of the screw) we don't generally have any issues. We use the same screws when assembling plaques and plinths in the workshop.
If I can help further in any way please let me know.
Kind regards, Andy
