Thank you for the amamzing video series! Really love how your shop is so clean and organized. Can you please tell me what the chemical is that you clean the end of the shaft with? It is in the bottle in the white tray. I believe you use it in your other video to also clean up the epoxy after you insert the shaft. Also is there a reason you use a razor blade to scrape the end of the shaft instead of a belt sander? What grit is the sandpaper you use after the razor blade? Sorry for all the questions I just really admire your work and I'm always trying to learn and better my club building skills. Thank you for all your help have a wonderful day.