OpenScad library. Threads for screws and nuts V1

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<h3>This open-source library simplifies thread creation for screws and nuts in your custom designs.</h3> This user-friendly library provides simple functions with preset parameters by default, ensuring efficient CPU consumption during previsualization and rendering. The library has been extensively tested on PLA with 0.1 layer thickness, yielding excellent results. Threads of diameters between 3mm and 10mm have been successfully printed, but you can use any diameter for your designs. Thread shapes are similar to ISO METRIC standards but not identical. Initial tests using screws and nuts from this library combined with metal parts produced acceptable results; however, these tests were not exhaustive. <h3>Included:</h3> Library file named threads-library-by-cuiso-v1.scad A file containing examples of use named examples.scad To utilize this library, place the file threads-library-by-cuiso-v1.scad in your project directory and include the line "use <threads-library-by-cuiso-v1.scad>" in your own .scad file. Alternatively, you can open it in customizer to generate a screw or nut thread of any desired size that can be seamlessly integrated into your designs. <h3>AVAILABLE FUNCTIONS:</h3> <h3>BASIC FUNCTIONS (USING PREDEFINED PARAMETERS):</h3> <h3>thread_for_screw(diameter, length);</h3> Generates a screw thread with the specified diameter and length. This function automatically selects standard pitch values based on the provided diameter. diameter: A free value in millimeters. length: A free value in millimeters. Example: thread_for_screw(diameter=10, length=30); <h3>thread_for_nut(diameter, length, usrclearance=0);</h3> Generates a nut thread with the specified diameter and length. This function automatically selects standard pitch values based on the provided diameter. The generated thread can be subtracted from any design element using the "difference()" operator to create a seamless screw insertion point and minimize potential "elephant foot" problems. diameter: A free value in millimeters. length: A free value in millimeters. usrclearance: (Optional) specifies a positive correction value if the screw fits too tight, or a negative value if it fits too loose. Default is 0. Example: thread_for_nut(diameter=10,length=20, usrclearance=0); <h3>ADVANCED FUNCTIONS:</h3> <h3>thread_for_screw_fullparm(diameter, length, pitch, divs=50);</h3> Generates a screw thread with additional parameters for more control over the design. diameter: A free value in millimeters. length: A free value in millimeters. pitch: The desired pitch value. divs: (Optional) specifies the number of divisions for increased or decreased resolution. Higher values yield more detailed rendering but increase processing time. Default is 50. Example: thread_for_screw_fullparm(diameter=10, length=30, pitch=2, divs=60); <h3>thread_for_nut_fullparm(diameter, length, usrclearance=0, pitch, divs=50, entry=1);</h3> Generates a nut thread with additional parameters for more control over the design. diameter: A free value in millimeters. length: A free value in millimeters. usrclearance: (Optional) specifies a positive correction value if the screw fits too tight, or a negative value if it fits too loose. Default is 0. pitch: The desired pitch value. divs: (Optional) specifies the number of divisions for increased or decreased resolution. Higher values yield more detailed rendering but increase processing time. Default is 50. entry: (Optional) enables or disables the wider entrance area at the beginning and end to facilitate screw insertion. Specify 1 for enabled or 0 for disabled. Example: thread_for_nut_fullparm(diameter=10, length=20, usrclearance=0.1, pitch=1.5, divs=60, entry=1); For more details, please refer to the library file. This library has been a valuable tool for me; I hope it can be just as helpful for you!