White Pearloid PVC Self-Adhesive Acoustic Guitar Pickguard Sheet - 290x210x0.5mm, Adhesive Backing

Hello, can this material be cut with a vinyl plotter? I would like to cut designs to a controlled depth to avoid cutting through the adhesive liner.

It's a great idea and could work with some higher end plotters, all depends on their cutting force. I wish I could give you an exact figure, but it's not something we've tested in-house. Some magnetic vinyls are around 0.85mm thick and suitable for use on vinyl plotters, so it is possible, but will just need testing.
Kind Regards,
Simon