cojo

Hey everyone thanks for waiting as I tried some things out - Bill - your suggestions look like they've done it. 1. Stirring not shaking and 2. Applying a less thick coat has gotten rid of the pinholes! Thank you! Bisque is fired to cone 04 at the studio I go to. I actually had the one clay name wrong actually, it's BC6, not BCS-6 I initially used Stoke & Coat. I had odd results with it, which in retrospect may have had more to do with how it was fired. Might try it again later - does anyone know if it waters down well? My memory is that it's pretty thick

Hey everyone, first time poster, didn't see a previously asked question with this specific issue but redirect me if there was one. I am learning how to make tiles Cuerda Seca style. I apply watered-down underglaze using applicator tip bottles. This almost always produces the following effect: Picture I correct these pinholes as they emerge, but they keep appearing and when the underglaze has settled too much, fixing them results in what I call "scarring" - blemished underglaze surface. This does not happen when the underglaze is painted on I am using BCS-6 and Naranja clays from Clay Art Center in Tacoma, Washington. This happens with either clay body It happens regardless of whether it is bisqueware or green I am using Mayco Fundamentals underglaze, I believe the same issue has happened with Amaco velvet It happens whether I use the metal applicator tip or the plastic tip that comes on the bottles It happens at a variety of water-to-underglaze ratios The water I use has been filtered with a Brita I shake up the water/underglaze mix before applying I have tried dipping the tiles in water before applying the underglaze, and while this may (?) help somewhat, it does not solve the problem It seems to happen more with some colors than others, for example it seems like it happens more with the blue than the green in my picture As you can tell, I've done some testing with this and have been unable to solve it. I have watch videos of people applying underglaze to tile in the same way I am trying, and it does not look like this happens to them. I am rather new to ceramics in general and I don't know why this would be happening. These are the specific applicator tip bottles I use: Amazon.com: Expesumas 6 Pcs Glue Applicator Bottles, 30ml Plastic Squeezable Dropper Bottles with Blunt Needle Tip 14ga 16ga 18ga 20ga for Glue Applications, Paint Quilling Craft and Oil : Arts, Crafts & Sewing