Fibre etching is a technique used that makes prints by selectively eating at fibres. The solution burns off the fibre of the velvet and leaves only the translucent silk.
We used silk screens to screen out a pattern for the fibre etching solution.
However, to my dismay, the velvet that I used was actually synthetic, and would not separate no matter how long I ironed.
Commonly seen on scarves.
This technique is rather straightforward. Bleach removes pigment from the cotton, and the imprint creates a pattern on a fabric. In class, we were provided with a spray bottle of bleach. By obscuring parts of the fabric (tying it up, folding it, or even shibori), we could create patterns based on the parts exposed to the sprayed bleach.
Rasterising is also another common technique that works by removing materials. We can do so by uploading designs to send to the laser cut machine. It then burns partially through the wood (or acrylic), creating an ink-like imprint of your design.