It is provided a computer-implemented method for designing a modeled volume. The method comprises providing (S10) a sculpting process on the modeled volume, initial lines, and an initial set of dexels that represents the modeled volume after going through the sculpting process and that is based on the initial lines; then providing (S20) new lines by refining the initial lines; and determining (S30) a new set of dexels that represents the modeled volume after going through the sculpting process and that is based on the new lines, wherein determining the new set of dexels comprises determining (S31) sets of at least one segment representing the intersection between each new line and the modeled volume before going through the sculpting process and then applying (S32) the sculpting process on the determined sets of at least one segment. The method improves designing a modeled volume represented by a set of dexels.