C/6 Soda Firing @ RCS

Rat City Studios: 2410 SW 106th Street, Seattle, WA 98146

Upcoming Soda Firings are announced first on our Clay Q&A Platform & via our newsletter. We have tons of info on our soda firing process, glazes, and more. This online platform is open for anyone to join.
Join “Clay Q&A” NOW!


All participants MUST Schedule a “15-minute Check-In” to have their pots measured
Please read this page before registering.
Refund Policy.
There are NO refunds if you do not bring the amount of pots you commit to bring.

the RCS Soda Kiln “Corona”

September 2nd, 2025

See Clay Q&A: Platform for link to sign up for specific hours. Refunds follow our general policy for classes. Refund Policy.

  • Monday, 1st 9pm, Last availability to drop off pots at RCS

  • Tuesday, 2nd Load 9am-12pm (wad squad)

  • Wednesday, 3rd Fire and introduce soda

  • Saturday 6th, unload 9am-11am (wad squad)

  • Saturday 6th, Everyone Share & Pick up 11am


September 30th, 2025 (WCA Members Cone 6 Firing)

Vase by Chris Barker - Whitestone, OMG Terra Sig, Underglaze, soda

🔥 Registration for this firing will happen via Raffle. The winners get a free share in the kiln!
To Participate, follow the steps below>>>

To learn more about what a “share” is, join the RCS Clay Q&A Platform. This is essential for participation in soda firings. A share is the size of a Clay Art Center box of clay.

  • Be a current WCA Member by August 1st

  • Enter the Raffle by filling out the form below by August 10th

  • Winners of the Soda Shares announced on August 15th

  • Participants must glaze, wad, and pick up their fired items.
    RCS cannot accept shipped pots for this event.

  • Pots need to be bisque-fired.

  • Clays with high iron and black clays have bloated badly in the firings

  • See details below or on Clay Q&A for all things soda firing!

General WCA Raffle Firing Timeline

  • Monday, Sept 29th 9pm, Last availability to drop off pots for the firing at RCS

  • Tuesday, Sept 30th Load 9am-12pm (wad squad)

  • Wednesday, Oct 1st Fire and introduce soda

  • Saturday 4th, unload 9am-11am (wad squad)

  • Saturday 4th, Everyone Share & Pick up 11am


October 14th Soda Firing

  • Monday, 14th 9pm, Last availability to drop off pots at RCS

  • Tuesday, 15th Load 9am-12pm (wad squad)

  • Wednesday, 16th Fire and introduce soda

  • Saturday 18th, unload 9am-11am (wad squad)

  • Saturday 18th, Everyone Share & Pick up 11am

Cup by Anika major - Whitestone with oestreich crackle, underglaze, & soda


November 4th Soda Firing

  • Monday, 4th 9pm, Last availability to drop off pots at RCS

  • Tuesday, 5th Load 9am-12pm (wad squad)

  • Wednesday, 6th Fire and introduce soda

  • Saturday 8th, unload 9am-11am (wad squad)

  • Saturday 8th, Everyone Share & Pick up 11am

Tea bowl by daniel brown - oregon red clay with helmar flashing slip & soda


Cup by Chris Russell - White stroneware with Oestreich Crackle Slip & soda

Steps for joining the Soda Firing

  1. Join Clay Q&A: (online app/ platform).
    Clay Q&A is our “Space” on the Mighty Networks App.
    It is our online information-sharing platform.

    — Learn all about our

    — details for the sign-up & firing process.

    — learn about our glazes, flashing slips, and soda firing

    — Read about your allotted kiln space

    — Decide if you want to buy a share.

  2. Purchase shares for the firing. Shares are $55 each. Buy as many as you’d like.
    — Each share is 1/2 Cubic Foot. (this is a 6” x 12” x 12” space.)
    — Each share comes with 2 hours of glazing and wadding at RCS during designated hours

  3. Make your artwork for the kiln!

  4. Schedule Check-in and Glazing time

    — Each participant must schedule a 15-minute Check-in for measuring your pots/ shares.
    — Glazing and Check-in must be scheduled (link on Clay Q&A). It is ideal to Check-in before glazing your pots to avoid chipping your glaze. You are also welcome to wax, glaze, or prepare at home.

    Please fill the space you purchase! No more no less. If you bring extra, please be ready to purchase more space in the kiln if it is available. If you bring extra, these need to be labeled as such. If there is extra room in the kiln we will add them at the end.

WAD SQUAD = The Wad Squad helps with loading and unloading. It is physical work! We carefully place pots and heavy shelves, we unload, we clean up, we scrap shelves, and make it all happen. If you are interested in helping with loading, unloading,g and all the work that goes into it, add your name to the list here. (More Info)

Vase by Ankita Dave -
Porcelain with Helmar Flashing Slip & soda

Loading the kiln

All artwork must be glazed before loading Day!
Deb will load the soda kiln with the RCS Wad Squad

FIRING the KILN

The kiln is fired overnight and through the next day. Participants are invited to help introduce soda into the kiln! The soda solution is added to the kiln at peak temperature > this is TBD based on the firing.

Spraying in soda solution

Firing the kiln:
Firing the kiln will take 12+ hours. It is checked every 30-60 minutes. The results will be logged online so you can follow along if you’d like to.

Introducing the Soda Solution:
To participate this portion of the workshop, you must wear long, non-flammable pants (blue jeans), closed-toed shoes (preferably a boot), and your hair up and back. You will be around extreme heat. You will consistently be taking off and putting on gloves.

Sharing and Pick-up

Unloading and cleaning up:
Deb & the RCS Wad Squad will unload and place all the artwork on tables. The workshop participants are welcome to come see all the results at the designated time (see times at the top of the page).

Be sure to bring plenty of packing material, as well as, boxes and/or totes to nest your finished pieces into after share time. And now, The workshop is complete!