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→Screw-and-lever tuners: paras, clarify disadvantages as this topic is debated |
→Threaded pegs and pins: make it clear that the pins dont' make the hole in the wood |
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Like tapered pins, threaded pins must be set in a pin block of fairly hard wood, such as [[cherry wood|cherry]] or [[white oak]], or they will not stay in tune well.<ref>http://www.sligoharps.com/8book.pdf</ref> Some pin block woods come from endangered trees.<ref>https://www.wood-database.com/wood-articles/restricted-and-endangered-wood-species/</ref> Some specialized plywoods can also be used (piano pin block stock or the die maker's ply used for [[rotary die]]s)<ref>http://www.sligoharps.com/2book.pdf</ref>
Threaded tuners are durable, will take very high string tensions. They do not push outwards on the hole and wedge the wood apart, which can reduce the risk of splitting it. They can be set in [[blind hole]]s, which allows the wood to retain more strength for a given weight.<ref>http://folcharp.com/zitherpins.html</ref> They can, however, also
===Use===
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