fncylinder() OpenSCAD module

thingiverse

This module enables the creation of cylinders with dynamic or fixed resolutions for consistent output in OpenSCAD.\nCylinders produced using a fixed $fn can exhibit jarring shapes at large sizes and excessively fine details at smaller sizes.\nThis module ensures that every cylinder possesses a constant resolution, which may be set to align with your 3D printer's capabilities.\nUsage:\nThe behavior of this module parallels that of OpenSCAD's intrinsic cylinder() function, accepting the parameters r, r2, d, d2, h, and center.\nThe crucial difference lies in its non-acceptance of $fn; instead, use fn if a fixed value for this parameter is desired (such as when generating hexagonal cylinders).\nIn cases where fn is not specified, OpenSCAD automatically calculates the required value from the radius or diameter to achieve the designated resolution.\nThe "resolution" variable represents the length of each segment that approximates a circle on the cylinder.\nIt follows that a smaller resolution yields a more detailed outcome.\nPlease note: excessively small resolutions may cause significant processing by OpenSCAD, resulting in increased $fn values.\nThe "enlarge" variable is utilized to expand the cylinder's height, facilitating the creation of non-zero wall thicknesses when employing difference().\nSubsequently, one can substitute operations like translate([0, 0, -1]) cylinder(r=5, h=10+2) with fncylinder(r=5, h=10, enlarge=1), to prevent such scenarios.