That came out quite well for a first attempt didn't it., not quite round but workable.
Another option I just thought of is find a hole punch used for Leather of the correct size , say 2 or 3mm and punch a disk out of white plastic sheet of the correct thickness and glue that in place.
PS I don't have a thing for plastic sheet and rod, I just have loads of it from my other hobbies and like to find extra uses
Paul
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