These two substances are useful means of removing kiln wash and refractory mould material from glass. They are important where abrasive methods such as sand blasting are not available or appropriate.
My recent
experience with both citric acid and trisodium citrate shows differences in
performance. This makes each more suitable in different contexts.
 |
| credit: Amazon |
Trisodium citrate is the safest option when long soaks are required to remove refractory mould material. The trisodium citrate removes any risk of etching the glass on long soaks. It has been shown by Christopher Jeffree that two-day soaks in this will not etch the glass. It is most suitable for casting work.
 |
| Items cleaned with citric acid and vinegar credit: Christopher Jeffree |
Citric acid
acts quickly on kiln wash, making long soaks less necessary. Depending on the
thickness of the stuck kiln wash and the amount of agitation of the stuck kiln
wash, the time required may be only a dozen minutes. It rarely takes more than
a few hours. Citric acid does not work
quickly on refractory materials. This makes the trisodium citrate the better
choice for long soaks.
What causes the release to stick to begin with
ReplyDeleteThis post will explain
ReplyDeletehttps://glasstips.blogspot.com/2023/02/conditions-for-re-firing-kiln-wash.html