Something Sweet, Something Scorned – Bacterial Cellulose

Photograph taken by Michelle Li

Sofia Klimkowski Arango, Fiber, 2025


Project Overview

Something Sweet, Something Scorned

K. hansenii bacterial cellulose, 2nd place ribbon, branded sugar, denim rope, wire, gingham fabric

17” x 26” x 2” inches

2024

I made this piece as a mock trophy-award-plaque that could fit into a state fair. Utilizing aesthetics of gingham, red ribbons, branding, and denim, I drew forward the imagery of the hot, sweaty sun on a July day in a stall with fingers sticky from cotton candy sweets. Made to be forgotten or undervalued from time, a crumpled ribbon, a denotation of second place (the first runner up), and visually similar to a brand stamped into the side of a hide, this piece elevates discomfort and pride. A delicate balance between gratitude and humiliation, a bittersweet love that time cannot erase.



Process

I grew my bacterial cellulose with an aluminum flashing design. I curled and creased the design of the hearts and made them in two interlocking parts. I cut it half way from top on one portion and from the bottom on the other side.

I took the larger plastic container and cleaned it with soap and water, isopropyl alcohol, and then UV sterilized it. I autoclaved my aluminum flashing and tongs. I placed in the aluminum flashing into the container. I then poured my bacterial cellulose liquid culture into the plastic container, insuring that the existing cellulose pellicle was contained within the heart shape that I planned to remove. I slightly lifted the flashing to then stab the existing pellicle underneath to hold the flashing in place.

I let my pellicle grow and monitored for mold, but it was difficult to tell through the lid and the sides of the flashing. Next time I would cut down the height of the flashing to better monitor the growth of the pellicle.

Once I let my pellicle grow to the appropriate size, I sterilized my pellicle. I took out the aluminum flashing but maintained the spacing of the two parts so that they did not overlap one another. I had to do an extra round of bleaching at the start because I had a small amount of mold grow at the intersection of the base of the heart. I then took the pellicle to the metal shop and attempted to brand it. I heated a horse shoe with a propane torch for approximately 3 minutes- I watched for a heat patina to envelop the entire piece of metal. I then used pliers to lift the horse shoe and press it into the pellicle. I found out that it made no color change, compressed the wet pellicle, and evaporated the liquid in that area. I then tried burning the pellicle directly with the propane torch. It resulted in making black sections that dissolved/melted down the pellicle into nothing. This did not result in my desired effect.

I pivoted at this point by using sugar to caramelize it to dark brown. This creme brûlée-ing effect worked because it turned the material both liquid and a different color. The liquidized sugar was able to seep into the pellicle and maintain its color while becoming part of the pellicle. For my final piece, I compressed the pellicle with the horseshoe and then placed in mounds of sugar where the indent of the horseshoe was. I heated the horse shoe for over 5 minutes on the side with a propane torch and then picked up the horseshoe and compressed it into the sugar mound. I let it sit for over 60 seconds, until the noise of the sizzle of sugar had tapered off. I then applied the sheets of hardened sugar back into the areas of the pattern and reheated the sugar sheets with the propane directly on the pellicle. Once I had finished caramelizing the design, I took the pellicle and gently/carefully rinsed it to get the loose sugar granules off of pellicle.

I then made a board with a tapered edge to lay my pellicle on, drilled holes for the metal staples/pellicle through the board, stapled the gingham fabric onto the board, placed the pellicle down and punctured it through the wire staples I made, placed the rope around the edge and held it in place with the wires that I tucked back into the rope. I finally attached the ribbon. A wire stapled to the back of the board is how I hang the piece onto the wall.



Learn More

sofia.klimkowski.arango@gmail.com