Ergonomic Hair Comb With Personalized Text

thingiverse

How Do You Convince Your Son To Comb His Hair? You Put His Name On A Comb. I was originally inspired by Daniel Martinez's comb, but after trying it out I decided to start from scratch so I could include ergonomic smoothing into the parameters and modules from the beginning. I also wanted a clean integration of calculated head-shape curvature to the ends of the teeth, while still responding properly to parameterized sizing of the comb. I made use of OpenSCAD's integrated text writing features for the personalized label in version 15.03 and higher. The final result is a fairly comfortable comb to hold. At that thinness, PLA gives just enough flex to work okay for this purpose. It might be interesting to try a variety of slightly more flexible plastics on this design, but I don't have them on hand at the moment. If you try some please post a note in the comments or as a make showing the result. Note that the OpenSCAD script can take a while to render due to high polygon minkowski sums used to generate smooth ergonomically friendly shapes throughout the design. Every attempt I made to reduce this resulted in polygonal textures in the print that are discernible to touch, which is about 24 minutes to render on my current system. However, it's worth it to get the ideal shape before printing. If you don't care about personalized text, I've included an STL file with no words. Update: My son pointed out that the corners of the original design were a little sharp due to the flattened sphere used to generate the ends of the teeth, so I redid the teeth with a spherical tip approached at a parameterized angle. This update corresponds to the v2 files shown in the cover photo and the first two rendered STL photos after it. The small spherical tip at the end of the comb's teeth also facilitates better parting of the hair. If you can, I recommend printing this in PETG as the slight flexibility makes it a very nice material for this. Printer Settings: - Printer: HICTOP 3DP-11 - Resolution: 2-3 layer perimeter - Infill: 20% to 50% - Notes: Infill does not matter much for this, nor is it very resolution sensitive. What IS important is that the teeth are very long and thin, and if they warp during this print it will ruin it. I recommend laying some fresh adhesive right where the ends of the teeth are going to print. This will keep them in place. Post-Printing: Depending on your plastic and printer settings, some stringing might occur between the teeth. A small putty knife works well for removing these without disrupting the teeth.