WarmGlass.com

Lemon juice as we all know is a mild acid. So applying it to already cleaned copper will give a mild tarnish. Instead it needs a neutraliser.

I've done it for sides, but no idea of density or trademark. 25mm thickness.

You can also wrap a steel rod - of the diameter of the aluminium rod - with a couple of turns of thinfire, glue the end to the other layer and place ( with ca 1-2cm of thinfire extending out of the glass layers). This will allow the steel to be removed and the hollow washed out. Unfortunately, the a...

YOu could try hairspray instead of glastac as your positioning adhesive. Much less volume and does have a tackiness to hold pieces in place while the cap goes on.

Seem fine now.
Stephen

Where do you use the glasstac? how much? why?

Brad,
I notice that this tab now brings up only the (one) latest post, rather than a number of posts made since my last visit. Is this a general thing, or only for me?
Stephen

I still don't understand why it is possible to sell kilns without simple safety devices to keep the kilns over firing or turning off when the lid/door is opened. These are simple devices and can be retrofitted.

Are you looking to have the edges of the piece rounded? If so, then there is no reason to avoid going to 804C for a full fuse. You only need 10 mins there to get the rounded edges. As you say it is clear that something has changed. Review each element of your practice in turn. Also review the materi...

I'm really unclear on what you are doing and the results you are getting. A picture would help. Whether you are using S96 or bullseye, I find it odd that you are doing all your work at 677C. That is in the area of a Bullseye bubble squeeze. For the bubble squeeze you might try moving from 600C to 67...

Oil and water do not mix. Given sufficient agitation the oil and water form a thick soapy like syrup. This will not help the grinding process as it provides lubrication (of sorts) rather than allowing the grit to do its work.

....... Regarding mold vs mould...I just got back from a road trip to BC Canada and I have new respect and some across-the-border envy...the Canadians are so relaxed and polite! I was up in the islands off of Victoria and it was...heaven! So I came back saying "cheers" and an occasional &...

Yes 790C/1450F would work better than 7905C - I don't even know if such a temperature can be reached outside of a volcano or the sun. Apologies for the typo.

I would soak longer ca. 30 mins in the 650C range, and I would fire higher for shorter time (790C for 10') But I don't see why what you propose would not work. If you have worries, you can put a bit of clear frit or powder at the corners between the glass layers.

As has been said, this is where the kiln won't help. This is cold work territory. get out your wet and dry sandpaper and work down through the grits, keeping everything damp all the time. If you get down to 1200 grit, the edge will be rounded and close to polished. Of course, you can use machinery, ...

The heat up rate you used on slumping should be slow enough. If you want to be cautious you could reduce the rate of advance to 100C/hr until about 540C, after which you can speed up.

My experience is that it *does* need pre firing. Blew a big hole in a large piece following the advice of the supplier that it did not need pre-firing. There are binders or something in vermiculite boards that generates gasses. I now fire kiln furniture before using it after this experience. This is...

Even the 30mm frit size is only 3mm thick. I am not positive what your aims are, but to get a coloured sheet, I use powder sifted on to about 1-2 mm thick. Tack fuse to about 20C below your rounded fuse temperature. When finished, I cut off the rounded edges (so make the coloured layer bigger than t...

Colours can affect it too. If you have dark or "heat absorbing" colours on one side, that will form first. Often slowing the rate of advance from about 590C will give more control over the slump. It will take longer to achieve the slump, but it probably will be finished before 677C. If the...

Barry,
I am in an irresponsible mood tonight.
"High end" to me means that someone's butt is in the air.