A method for producing an adjustment shim includes preparing a liquid solution of a non-polymerized resin and a solvent; coating sheets of metal with the liquid solution so as to form a film of resin on at least one face of each of the sheets of metal; stacking the metal sheets so that two adjacent sheets of metal are separated by the film of resin; and curing the resin films in the stack of metal sheets, for a predefined time period, at a temperature higher than a degradation or burning temperature of the resin.