When I started the pottery program here at school, the world of commercial glazes was totally new territory for me. Up to this point, I had always mixed my own glazes. I knew this was not going to work for many reasons - proper venting, time, storage space, safety, did I mention time? I knew I needed glazes that were fool proof and I needed glazes that would come out looking great even if painted by a kindergartner.
After some (google) research, I ordered a classroom pack of Amaco Liquid Underglaze.The classroom pack included 12 different color pint jars. Below I have shared several tips and tricks, as well as general knowledge, that will help students to be successful when using this underglaze.
Tips and Tricks when using Amaco Liquid Underglaze
- 1 coat will be light and brushstrokes will still show.
- 3 coats will be dark and solid.
- I always instruct students to complete 2-3 coats.
- Paint dark colors on top of light colors.
- Each coat needs to dry completely before the next coat is applied.
- A coat is dry when it is light, chalky and no longer cool to the touch.
- I usually set up a designated "drying table" with a fan on it to speed up drying time. Students will place their clay project on the table and then return to their seats to free-draw until their piece is dry and ready for its next coat.
Amaco LUGs are dinnerware safe once covered with a dinnerware safe clear glaze. They should not be used alone on surfaces which come in contact with food or drink. The best clear glaze I have found is Duncan Pure Brilliance Clear Glaze.I buy the 3.5 gallon bucket of dipping glaze and it works like a charm everytime! I never have trouble with crazing, crawling, or pinholes. When the Underglaze is dry, I have my students take turns dipping their piece into the clear glaze (I will the dip the K/1st). Unless a piece is super heavy, the bottom of every piece is glazed and then placed on a stilt in the kiln. I fire the kiln to Cone 06 at medium speed, holding at temp. for 15 mins.
What do you think? Do you have any tips or tricks of your own?