Dear Reader,
After last semesters failed attempt to capture the detail of my wheelchair in a 3D scan, I decided that this academic year I would like to try again. Due to the 3D scanner struggling with the materiality of my chair, and not liking the shine of the metal, I had to come up with a new strategy to capture this missing infomation. After brainstorming with Danielle the university’s lead technician, we came up with a plan for me to wrap my chair in stretchy fabric. By wrapping the wheelchair in a stretchy cotton, it would not only erase the shine but would be done in a material that’s easy for the scanner to register. The biggest benefit to the cotton fabric being stretchy is that it will retain the original shape of the wheelchair.
Today, I had my first attempt at stretching fabric over my wheelchair. I wanted to start out small and work my way up to a full wheelchair covering. This morning’s focus was my right wheel. In last semesters scan my wheels were lost entirely and were replaced by artificial discs. The saddest part about this was that I lost my self propelling bars, so when covering my wheel today, I started by stretching the fabric over the wheel and tying string between the tyre and the bar for further definition.
Although this was good in theory, I found this quite difficult to do. The string kept popping off and I had trouble keeping the fabric taut, this could of happened for two reasons; firstly, I wasn’t strong enough when pulling the fabric back, or secondly, because by pulling the fabric so tightly the string would keep popping off.
I found the best method to be stretching the fabric across the whole wheel and tying it behind. This gave a smoother, tighter finish.
I then used the hand scanner to scan my wheel, I had to keep a forearms distance away whilst scanning and slowly move around the wheel capturing every angle. It then rendered on the screen.
The scan was successful, but it picked up a lot of background noise that I had to edit out. Using the editing software Artec Studio, I utilised various different eraser tools to cut out any unwanted bits.
My favorite eraser tool was the lasso, where I could loop large areas and make them vanish. It was very satisfying to watch such large parts of the scan disappear. This tool was also really good for erasing some of the finer details that were close to my final peice, as you can draw your lasso loop in any shape so I followed the curvature of the wheel.
After compressing the scans and editing out the baground noise, I was left with a wheel-like cylinder, I then made it water tight and rendered it.
After the editing of the wheel was complete, I transfered my scan to Prusa, a software used to send your work to the 3D printer. Although I didn’t print this work, as it was an experiment, I could see how it would look as a 3D print.
It was fascinating to be able to see how the layers inside the scan would build up a 3D print.
I really enjoyed this experiment, it turned out to be very successful. I always love being able to learn a new skill so I have thoroughly enjoyed learning about the softwares behind making a 3D scan, and how to use them. Moving forward I will incorporate more fabric so that I can wrap my entire wheelchair and perhaps myself too! Although today’s scan was a success, I think next time I will try to tie the string around the bar of my chair after the fabrics been stretched; maybe this way I can have the same desired smooth finish but with more detail of my wheel.