You need to sand in three steps, use coarse paper, then medium paper then fine paper, then steel wool.
You have to get beyond the absorption of all the oil. Remember, teak is used on decks and wood ornaments aboard ships and is impervious to rot and environmental conditions. Its tough.
You have to be tough with it.
Remember, sand in the direction of the grain only.
When completely sanded use a good quality of sand sealer to make the staining or sealant go down in a uniform manner.
Table must be beautiful.
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