Wednesday, October 31, 2012

October 29th Hint of the Week

Th-INK-ing About Crackles (Inspired by Georgies Ceramic & Clay Company & Doug McDonald)

Sometime ago I remember Doug McDonald using ink to highlight the crackle patterns on some of his glazed items. Doug used a sharpie to highlight those crackle patterns in the clay and it was quite unique and definitely set off the pattern. I had forgotten about this technique until I was browsing on Georgies Ceramic & Clay Company “How To Projects” and saw their hint on using ink on fired crackle glazes. They used India Ink for highlighting their crackle patterns on fired glaze, but Doug’s Sharpie would seem less messy. I would suggest that you go to Georgies, who are one of our favorites, “How To Projects” and look at this article as the pictures really help explain it http://www.georgies.com/projects/project-crackle-glazes.pdf. Georgies uses ∆6 clays and ∆6 Crackle glazes.

Here is the simple Blow-by-Blow for inking your crackles from Georgies:

1. You will need fired pieces with distinct crackles. Brushes, India, Calligraphy or Sumi Ink, paper towels, water and disposable gloves.

2. Brush a thin coat of ink over the entire piece.

3. YES! It is really messy.

4. Now use lots of paper towels to wipe off the excess ink, leaving ink in the crackles.

Georgies tells us that this technique works best on light or porcelain clays and also best with crackle glazes which are usually semi-transparent. The porcelain clays have the highest shrinkage rates and the crackles will usually be more apparent. You can buy specific crackle glazes from several sources including Georgies, which specialize in ∆6. However, our ∆10 celadon glazes will often crackle or craze too, and we have some crackle glazes in our low fire area. You could try inking any of these crackles, with either a sharpie or the inks mentioned and they should be fairly permanent. I don’t think using this on the inside of food containers would be advisable, but there are plenty of other types of pottery that would look great with this technique.

No comments:

Post a Comment