Bots glazes! Thick brush on glaze that can give a punchy colour, but that can also be sensitive and shift around or not come out as expected. Botz were the first glazes I used because these were the glazes SB had in her studio and they are affordable at around £5-13 depending on the supplier and size of pot.
I began by buying ‘Black Blue Speckle’ and ‘Ice Crystal’. However I used them on two pieces that had quite a lot of detail and these were ultimately swamped I felt and the overall effect did not bring out the detail in a way I had hoped. The Black Blue colour had been as expected but the Ice Crystal had given a more sandy, beige effect rather than the white/blue speckle I had been hoping for. These items were made at home and fired at SB’s studio.
When I fired the Ice Crystal at home however, it gave a dramatically different effect! This is exactly the same glaze as the top white pot, but fired by myself to cone 9 (1260 oC).
I used the Black Blue again on a coffee jar with a white from SB’s studio and this was much more successful I felt.
With my confidence restored a little, I decided to buy a couple more Botz glazes from Bath Potters as they were offering 10% off for first time customers. So, I decided to buy a Basalt Grey and a satin matt white called Creme. I didn’t have time to do testers and so used the glazes on some thrown pieces I did recently, and a couple of left over stars from Christmas to be used as testers.
Overall I was reasonably happy with out the pieces came out, however the Basalt Grey was really more brown. I was surprised as I painted it on quite thickly for two coats. I didn’t think I would be able to get a third coat on without it pulling away, however perhaps that’s just what it needed to reach that deep stoney grey colour.
Overall I find the Botz glazes to give good coverage and depth of colour (holding judgement on Basalt Grey), however they are far less predictable than say the Mayco and you use up much more glaze per coat than the thinner applying Mayco. For example air bubbles appeared in the white and in one area it completely shifted away from the ceramic underneath – there must have been grease or something on the clay, as I’ve no idea why this would have happened. The white also showed brush strokes in some areas, which I found with the Ice Crystal and grey as well, wheres this was not the case with the Black Blue. I had hoped the colours would interact between the gray/blue and white more, but this didn’t really happen.
Overall I like Botz glazes, however I think to get the desired effect I need to spend more time with testers and experimenting with firing at different temperatures. I would definitely buy them again but they are less versatile in terms of mixing and layering. (Perhaps they aren’t, if you have a different experience please let me know!). They also obscure surface texture quite a lot due to the thick layering required, but the colours can be striking and have a depth and quality to them that I really love.