When buying a wooden keel, you will find that the merchants are usually bundled for sale. At this time, you must open the bundle and pick one.
(1) It is very easy to deform and crack after selecting a dry, high-humidity wooden keel.
(2) Choose less scars, no insects, otherwise the wooden keel will easily break from these places.
(3) Place the wooden keel on the plane and select it without bending and straight.
(4) Regular merchants say that the keel of 8cm square is actually only 6cm square, so the thickness of the wooden keel should be measured to see if it meets the size you need.
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