Topic: Crackle glass vase... I know what your all thinking... - ID probably = Karcag

[Tigerchips]

Chinese, I'm sure it's not though even though it's modern. 

It's very heavy and the crackle is very fine and the quality seems good. It's a cracking good vase Gromit!

[steph]

AAAArgh - I'm getting confused this looks like a mix of crackle and peluguso(?) Would people say that this is an example of 'sloppy' modern mass production methods?  The whole bubble thing confuses me - I've identified, Biot, Nazing, Murano, Whitefriars etc etc etc and the size/density of bubble inclusions seems to vary so much.  Can anyone suggest some reference source on glass production that will help me understand the different processes a bit more.  ooops sorry Frank, forgot to mention Scottish glass in my list! cheers all, steph (avid but ignorant learner)

[Frank]

Very little published on such techniques.

Craquelle is achieved by dipping the piece in water and only experience and technique prevents it from shattering completely, or even exploding. Crackle is a common English term for it.

Bubbles can be introduced mechanically by pricking the glass with needles, either by hand or in a mould. There is a picture of such a mould in one of the archive postings. Or by sprinkling powder of any substance that vaporises when the second gather is taken - giving random bubbles. The Ysart's used charcoal which did not completely vaporise and small black particles can be found in the glass. The bubble distribution is controlled in hand-blown by the use of dip-moulds before the second gather and later manipulation. Some controlled application of the vaporisable material could also be used.

Lots of variations on the above.

[Tigerchips]

This is all crackle, no bubbles, and the crackle is inside the glass, must be cased then?

[krsilber]

I think it was Carder who used to put ash branches in the batch to make bubbles.

Could it be overshot and cased maybe?

[Tigerchips]

It's smooth on the surface so I don't think it's overshot. 

100% crackle.

[Tigerchips]

Karcag glass i believe...

[flying free]

Yes I thought so as soon as I opened the thread - I didn't realise the thread was so old
very pretty.
m

[Fuhrman Glass]

another way to achieve something like is to roll in a baking soda solution, which gives a fake scavo effect and then reheat just a little and then encase in clear.  that creates lots of small irregular bubbles.

[aa]

another way to achieve something like is to roll in a baking soda solution, which gives a fake scavo effect and then reheat just a little and then encase in clear.  that creates lots of small irregular bubbles.

Or dip in a bucket with Bicarbonate of Soda dissolved in it, before gathering.