Place between the two pieces of cane on the reed when scraping, so as to avoid the reed from snapping. The benefit of a convex plaque is that there is no need to press the cane flat whilst scraping, therefore keeping the tip open.
Pisoni Oboe Tools - Plaque - Nickel Silver
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Toyvian Oboe Repair Kit Threaded Screws and Steel Shaft Sticks, Silver Instrument Repair Tools to Maintain Oboe for Professional Musicians and Beginners
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Protec Deluxe Clarinet / Oboe Case Cover (Purple A307PR)
Ernie Ball Deluxe Guitar Maintenance Kit - Tools Polish & Conditioner