Wednesday, August 20, 2008

Making a toothbrush in Blender

I’ve been working for some time on a picture of a woman cleaning a dinosaur’s teeth. I’ve been using a hairbrush model for the toothbrush. I’ve just been scaling it a bit to get it toothbrush shaped. But, I’m still not satisfied. So I’ve decided to build a quick model in Blender.

After loading Blender, I just stretched the default cube along the y-axis till it was toothbrush length.



I switched to edge select mode then selected the four lengthwise edges. I used Subdivide Multi to then break each into 4 subsections. Using Edge Loop Select, I selected each of the newly formed rings and moved them along the toothbrush into two sets roughly where the neck of the toothbrush begins and end.



I scaled down the inner rings of the neck to give it that thin look. I also scaled down the ring at the butt of the toothbrush just to give it a slight taper. I then selected the whole thing and scaled it down along the z-axis to flatten it out a bit.



To finish off the handle I beveled it with a recursion level of 3. This was just to give it a smoother look.



Now a toothbrush generally does not have evenly distributed bristles like a hair brush might. Instead they come in bundles. So to do the bristles I decided to use a lattice of cylinders. I added the first one in object mode rather than edit mode so that it would be a separate object. Hopefully this will make it so that I can give the bristles a different material than the handle when I import the object into poser (I’m not going to bother with Blender’s material system. I hate it). So I created a cylinder then placed it on one corner of the brush head. Then I just duplicated it until the brush head was evenly covered.



For the last step, I wanted to make each cylinder look like a bundle of bristles rather than just one. So, I selected only inner edges of the tops then did a Subdivide Multi Fractal (4 cuts with a rand fract of 10) to give them a rough look. I then reselected the inner vertexes of each one and scaled them up a little along the z-axis to give them a better look.



That’s it for today. I still need to get this into Poser, but I’ll save that for another entry.

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