Support the creation of content on this website through PATREON!
Example Projects
Workshops
Announcements
Actuators
Connections
Power
Sensors
Traces

Circuits and Code Wireless

Conductive Materials
Non-Conductive Materials
Tools
Techniques
Thinking Out Loud
Technique
  • Batik Etching Conductive Fabrics
  • Needle Felting Conductive Wool
  • Constructing a Dataglove Pattern
  • Crochet
  • Loop Stitch
  • Designing "Soft Circuits"
  • Dyeing Conductive Yarn
  • Embroidering Mirrors
  • Fabric Pleating
  • FUSIBLE INTERFACING
  • Granny Squares
  • Hydrogen Peroxide Etching
  • Ikat Woven Conductive Thread
  • Knitting
  • Large Scale Knit, Crochet and Knotting
  • machine embroidering
  • Machine Felting
  • Modular Placement Prototyping Technique
  • Needle Felting
  • needle felting (wet)
  • Relief Embrodiery
  • Salt and Vinegar Etching
  • Weaving Conductive Fabric
  • About
  • E-Textile Events
  • E-Textile Spaces
  • Newsletter
  • Print & Publications
  • E-Textile Shopping

  • SEARCH
    Content by Mika Satomi and Hannah Perner-Wilson
    E-Textile Tailor Shop by KOBAKANT
    The following institutions have funded our research and supported our work:

    From 2013-2015 Mika is a guest professor at the eLab at Kunsthochschule Berlin-Weissensee

    From July - December 2013 Hannah was a researcher at the UdK's Design Research Lab

    From 2010-2012 Mika was a guest researcher in the Smart Textiles Design Lab at The Swedish School of Textiles

    From 2009 - 2011 Hannah was a graduate student in the MIT Media Lab's High-Low Tech research group led by Leah Buechley


    In 2009 Hannah and Mika were both research fellows at the Distance Lab


    Between 2003 - 2009 Hannah and Mika were both students at Interface Cultures
    We support the Open Source Hardware movement. All our own designs published on this website are released under the Free Cultural Works definition
    Technique

    Hydrogen Peroxide Etching

    Hydrogen Peroxide Etching conductive fabric

    Photos: https://www.flickr.com/photos/plusea/albums/72157710980633483

    Polymerization

    copper riptstop:
    Polymerization

    silver lycra (front):
    Polymerization

    silver lycra (back):
    Polymerization

    silver lycra (stretched):
    Polymerization

    materials:

    High acidity vinegar (24%): look in the cleaning section of your local supermarket for vinegars used in cleaning.

    Hydrogen Peroxide (Wasserstoffperoxid Lösung) 30%: ask at your local pharmacy and let them know you are using it in a workshop/lab for material purposes (not on the body). If they don’t stock/sell 30% they will likely stock a lower % for hair bleaching and you can also get this. The etching process will just be slower.

    Resist (bees wax + batik, tape, oil….)


    Recipe:
    This recipe is pretty lenient, meaning there is no exact mix and we encourage you to experiment with different ratios. If you notice the etching bath becoming weak you can add more peroxide.

    STEP1) MIX the ETCHING BATH
    MIX the etching chemicals together in a glass or plastic container in a 2:1 ratio to create your ETCHING BATH:
    2 parts: High acidity vinegar (24%)
    1 part: Hydrogen Peroxide (Wasserstoffperoxid Lösung) 30%

    C A R E F U L:

    For humans: the mix of these chemicals is a strong etchant and you don’t want to get it on your body, skin or cloths. Wear waterproof gloves and rinse equipment thoroughly with tap water to remove residue.

    For environment:
    as far as I have been able to find out from looking at government chemical safety websites and forum discussions on the internet in small batches (<1liter???) these chemicals are okay to rinse down a household drain (connected to plumbing system) and good to let the water run extra to dilute. I am less sure about the fact that we have dissolved metals (and possibly other things) into this mix. WE SHOULD BE BETTER INFORMED!

    STEP2) RESIST
    Apply the resist to your fabric.

    STEP3) SUBMERGE
    Submerge the piece to be etched in the etching MIX.

    STEP4) WAIT & OBSERVE
    Observe the etching closely. This process will differ greatly depending on the %s in your chemicals as well as the kind of fabric you are etching as well as possibly the temperature of the etching bath.

    Example:

    setup:
    2 : 1
    24% acidity vinegar : 30% Hydrogen Peroxide
    Silver plated lycra conductive fabric by Statex

    First 5-10 minutes:
    Conductive fabric becomes wet and may change colour
    nothing visibly happening

    At around 5-15th minute:
    Visible reaction by change of colour/texture in exposed areas
    Some air bubbles in liquid around these areas
    Shining through of white base fabric

    End:
    Once you see sufficient proof of base material you can end the process by removing the piece from the bath (use a tool or gloves).

    STEP5) RINSE
    Rinse the fabric thoroughly to remove all chemicals.

    STEP6) IRON & DRY
    If you used a wax resist, sandwich the piece between layers of old newspaper and iron. The heat of the iron will melt the wax and draw it into the newspaper. After a few passes the wax should all be in the paper.

    Polymerization



    Leave a comment