Light oil, such as sewing machine or hair clipper oil. As it is probably a case of the wood expanding slightly and rubbing on the blade a drop of linseed oil may work too and feed the wood also.
@Bobbo started
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Light oil, such as sewing machine or hair clipper oil. As it is probably a case of the wood expanding slightly and rubbing on the blade a drop of linseed oil may work too and feed the wood also.