I have one of those shapers, but it's made of steel. It even has the Tweeten sticker on the back. I also had one of the plastic ones, but it seems to have disappeared. I got one of the "Last-Forever" tip tools a few years ago, and it works fine too (fits in the case better).i use an old-school tweetens(https://www.amazon.com/Tweeten-billiard-Trimmer-Scuffer-Sandpaper/dp/B074DM4F5P) shaper to get a good dime shape and then use a dime radius Willards for occasional re-shape. that's it.
I don't see anything magical about shaping a cue tip. Do it by hand a few times, and you'll be an expert, tout de suite. I once watched Jack White shape a tip with a pen knife, and a piece of sandpaper. And he had pretty darn good cue ball control.
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