Friday, December 15, 2017

Making of "Dad"

This is a project that I completed as a gift for my dad's 70th birthday. It started almost two years ago when I 3D scanned my dad's head using a series of about 20 evenly lit photos and a piece of online software called 123D Catch.
With the scan as a foundation, I stylized the model to feel a little more sculptural. Using ZBrush, I looked for the plane breaks in the face and made them more graphic, smoothed out details that would draw the viewer away from the eyes of this piece, and sculpted in stylized wrinkles and hair. The clothes were remodeled and a base stand created. Lastly I concaved the cornea of the eye, leaving one spot in the upper lift corner to imitate the darkness of the cornea and pupil with a highlight in the corner. This is a technique I observed in traditional sculpture.

The piece was divided into three parts. This was done for a few reasons. The biggest of which is to get a larger finished piece. The Form1+ 3D printer I used for this project has a maximum build volume of 5x5x8 inches. With the addition of supports and the need to angle the head back to avoid support touch point in areas of high detail, I couldn't get the size I wanted if I were to do a single print.




An added benefit to printing in sections is that if a part fails to print, that is it has errors in the physical result such as holes, you only waste the material of that section of the print. Errors are fairly common. The first head I printed failed near the end (as they usually and unfortunately do), leaving the last 10% of the head unfinished. This had to be scrapped and reprinted. The second print of the head also failed, but fortunately it was salvageable. There was a hole in the forehead, but it was in an area of low detail so I was able to patch it and do some minor sculpt fixes using a moldable product called Magic Sculpt. This was introduced to me by my modeling friends at Disney Animation. It's a two part, self hardening epoxy that is very soft and easy to work with when first mixed. It gets harder over time, eventually becoming rock hard and great for sanding.

At this point, I filled the hollow prints with old Super Sculpey. This gives the piece some weight, which I've found to really add to the experience of holding the piece.  I have some older prints that I wish I had filled. When I hold them, their lack of weight gives them a certain cheap quality. As a famous fictional lawyer once said, "Is it heavy? Then it's expensive".  But he got eaten by a T-Rex while sitting on a toilet 30 minutes later, so what does he know.
 Next the three parts were glued together using a two part epoxy glue. Minor surface blemishes were filled with the Magic Sculpt, and the entire piece was sanded.


The hard part was over and we're ready to spray paint. I applied one coat of grey primer, and three coats of the cream, acrylic, gloss paint I chose for this piece. Special care was taken to apply only thin layers as it would be very easy to blow away surface details with heavy coats of paint. The very last step was to apply soft material to the bottom of the piece, a touch which I felt added to the professionalism of the piece.
Thanks for reading!