Purple Rubino?!

[Amber]

OK, so I've got my 'Think Pink' tutorial, made a couple of beads...but whenever I've annealed rubino in the past, it's gone purple in the kiln! I know Sarah mentioned that this can happen if you anneal at high temperatures or for a long time, but I'm only using the basic SC2 batch annealing schedule, nothing out of the ordinary.

What can I do? I'd like to keep my lovely pink beads pink! 

[turnedlight]

I anneal at 520, and soak after the last bead for about 30 mins if it's a larger one. I used to do it at 530 but read it was high for some glass - what temp are you going to?

[Amber]

I'm using this schedule;

PRO1 (or another free slot)
Ramp1 149C
Temp1 520C
Hold1 60mins
Ramp2 78C
Temp2 371C
Hold2 0000mins
Ramp3 0000

[turnedlight]

maybe it's the long soak then.. good for big beads, but try doing the rubino near the end of the session, and coming down from 520 earlier - hopefully there will be a seasoned pro along to tell you more!

[GoodMonkey]

Hi Amber

I have used the same schedule as you and mine are still pink.   Are you striking and striking the rubino - I think it does go a little darker the more you strike it or could you be putting it on too thick?  I don't know really but I'm sure someone with much more experience will be along to help you soon. 

Shelley

[Redhotsal]

That's not a long soak in my book - I've had rubino in at the start of a seven hour soak session and it's never gone purple. I've never heard of this. I dont' even think 520 is too high. Don't want to sound patronising but are you absolutely sure it's rubino? It should reduce really easily to a metallic silver. If yours doesn't do that I'm wondering if you actually have rubino. CIM do a cranberry which looks very similar - wonder if you have that?
Do you have a picture?

[Sarah]

Like Sal I've never had the problem and my schedule is very similar 'though I garage at 510 while I work and the move up to 520 for an hour long soak.

CIM cranberry reduces to a rather nice bronze and hasn't gone purple for me either so I don't think it can be that.

Might be worth PM'ing Sarah H if she has come across it before - I'm sure she'll be happy to give you help 

Sarah
xxx