# Intro to Soda Firing workshop for first-timers with Adriana Sousa Estrella - Spring 2026 ![a person wearing a mask and safety goggles spraying soda ash and water into a glowing hot kiln. Air is fogged with vapor.](/sites/g/files/omnuum4081/files/styles/hwp_5_4__480x385/public/2026-01/Soda.jpeg?itok=Q0QM60Oz) #### calendar\_today Date and Time **February 20, 2026** 01:00PM - 02:00PM EST #### pin\_drop Location **OFA Harvard Ceramics Program** [224 Western Ave Allston, MA 02134 United States ]() *This workshop is for those who have never experienced Soda Firing before. Registration for this workshop is limited to those registered for a Spring 2026 course at the Ceramics Program, Office to the Arts at Harvard **who have not previously participated in a soda firing workshop**. We reserve the right to remove those who have previously participated in a Soda Firing workshop at the Ceramics Program.* Note that this workshop meets multiple times over several weeks - check full schedule below and ensure that you can attend all required dates. In this intensive, multi-session workshop, students will first attend an orientation session with instructor [Adriana Sousa Estrella ](https://ofa.fas.harvard.edu/people/adriana-sousa)where an overview of soda firing will be provided, as well as instruction on preparing the ceramic surface for this unique kind of firings with specialized slips for green-ware and glazes for bisque-ware. At the orientation, students will sign up for one, 1-hour slot to experience preparing and loading work into the kiln. On firing day, all students are invited to attend all, or part, of the firing. Finally, students will be expected to attend the unloading of the kiln to see the results and participate in clean-up of the kiln. ### Participation Requirement *You must participate in at least one loading session AND the scheduled unload/cleanup session to have work included in the kiln firing.* Please check your schedule carefully before registering to ensure you can fulfill these requirements. ### Space Limitations While we make every effort to accommodate a variety of work by each participant in the workshop, the size of the kiln limits what can be fired. We cannot guarantee that every piece you produce for the workshop will be included in the firing. ## Workshop Schedule *You must participate in at least one of the two loading sessions AND the scheduled unload/cleanup session to have work included in the kiln firing.* Please check your schedule carefully before registering to ensure you can fulfill these requirements. ### Orientation: Friday, February 20th, 2026, 1pm-2pm ### Glazes, Slips, and Wadding demo: Friday, February 27, 1:00 pm - 2:00 pm ### Loading: Monday, April 13, 4:00 – 6:00pm Tuesday, April 14, 4:00pm - 6:00pm ### Firing: Wednesday, April 15, 5:30am-5:00pm (spray @3:30pm) ### Unload, Cleanup, and Critique work: Friday, April 17, 10:00am - 1:00pm ## Cost & Registration information Registration for this workshop is limited to those currently enrolled in a Ceramics Program course who have not previously participated in a Soda Firing Workshop at our studio. Cost: $150; FREE for Harvard College Undergraduates. **A link to register for this workshop will be sent by email to those enrolled in a Spring 2026 Ceramics Program course**. Registration will open on Wednesday, February 11 at 10:00AM. ## What makes Soda Firing different? ![Denny McLaughlin checking the port of the Soda kiln, which has a flame coming out of it](/sites/g/files/omnuum4081/files/styles/hwp_3_4__480x640/public/makeart/files/explore_soda.jpg?itok=HvaYyWjT) Soda firing is similar to cone 10 reduction firing, but with these differences: - The outside of the piece does not need to be glazed since the soda affect will create a finished surface without glazing. - The soda ash will create more melting with a glaze on the outside surface, which will make some glazes more fluid causing them to run if the glaze is applied too thick. - Not all high fire reduction glazes are suitable for soda firing. - Since the bottoms of pieces fired in the soda kiln are wadded with a mixture of clay and alumina hydrate, more space needs to be left between the lower edge of the outside glazed area and the bottom of the piece. ![fired pottery in a kiln](/sites/g/files/omnuum4081/files/styles/hwp_1_1__720x720_scale/public/2025-01/Soda%20Firing_2.png?itok=AUOyGmVZ) See also:- [ 2026 Spring ](/term/2026-spring) Share on:- [ Facebook ](#) - [ Twitter ](#) - [ Linkedin ](#) Save: [ Add to calendar calendar\_today ](https://ofa.fas.harvard.edu/node/1615861/event-feed.ics) Copy link link