My first test results with Debitus amber stain and Debitus Blue enamel were less than satisfactory. The stain was uneven, and on my antique glass sample it devitrified and metalled. THe blue was grainy. Maybe going to have to muller the blue some. I'm curious about the blue's resistance to acid. I'll be testing that soon. Its fairly transparent.
Hi Cameron. Here's some notes. I haven't had a chance to do anything more with the amber stain other than the initial test.
A bunch of people got the Jean Cousin rouge earlier this spring. I did not get any myself. It's most noteworthy qualities so far are that it is ridiculously expensive for a little jar of it, and that it has a way of making people be secretive about it. That is to say I haven't heard any reports back about it except from Cyn Courage who I believe didn't get very good results from it. If I recall correctly she said it was gritty and maybe needs some further muller work. I'd like to hear from the others if they've tried it.
The blue enamel is a little gritty and needs to be mulled for a real glassy application. It fires with OK transparency at a pretty high temp. I think on my samples it says 1325F or something. I'd start with maybe 1275-1300 and adjust from there. Its not acid resistant (white vinegar). So to me that means it's not weather resistant, contrary to what Debitus lists. I'd be happy to be corrected on this, but that's what I observed. Since it fires pretty high, it could be a nice addition to lower firing enamels because you could layer them and retain definition of the lower firing stuff on top. It won't be my goto blue.
The debitus copper red stain is a unique stuff. It fires a salmon/coral color on float glass tin side, and anywhere from a pickle green to a bona fide ruby red on Bullseye reactive glass. Depends on the heat work it undergoes. If you mix it or layer it with silver stain weird things happen, some of which I've seen that are pretty cool. I haven't done that though. The material outgasses something nasty (H2SO4?) onto the surrounding glass while firing. If you apply near or touching black paint lines, it aggressively corrodes the paint while firing...to the point where it actually pits the glass beneath where the paint was. Pretty cool, actually. But not real useful. So don't apply it near fired paint lines. I fire it to 1200F and hold it for 15 minutes, but again, you gotta test in your own kiln.
I think Dan White and Kristi Lambrect got the full sets of Debitus paints, but I haven't heard any reports about it. If you don't know them or don't have their emails, I can help fix you up with a great glass guild where these people hang out I know they'll share any information they have.
Last edited on Fri Aug 1st, 2014 12:08 am by Don Burt
Oops. You're a already a new AGG member who has not yet been properly processed or welcomed by the membership committee. Well, sorry for the delay and Welcome to the AGG! You'll be hearing from us very soon.
The Jean Cousin is definitely too expensive for me. Yikes.
I was particularly interested in the red and blue colors because they were described as tinting the transmitted light, rather than obscuring it. It seems they are a bit more challenging to use than typical vitreous paints. I appreciate the insight. I'll probably give them a try, and learn from your experience with them--particularly the many challenges with the red.
I'd be very interested in learning more through the guild connections you mentioned. Thanks so much for mentioning it.