When I was at the craft fair yesterday, many customers were intrigued to hear that I make my glass jewelry with a microwave kiln. A few wanted more details and wondered which is better: a large or small kiln? After working with dichroic glass for a year, I'd say that both are useful for different reasons. Here are some pros and cons for each.
SMALLER MICROWAVE KILNS: I think these are perfect for beginners. These kilns become hot at 1500 degrees F and the smaller ones are less cumbersome to handle. So as you're getting used to opening and closing the lid, checking on the piece, etc., I'd recommend starting with the small one. They're also less expensive, so why spend the money until you know you truly enjoy making glass?
As an intermediate glass maker (I refuse to call myself a "professional" at this point), I prefer using the small kiln for fine detail work. Because it heats quickly, I find that it's good for firing pieces at a particular stage or for adding decals. The small kilns heats within a few seconds, so I can heat items in 10, 15-second increments and then stop the process at the exact moment I want. This is especially effective when I want to purposely underfire an item or play up a particular glass texture.
Having it heat quickly is great when you're an impatient person like me, but large glass pieces tend to break when they gain too much heat at once. I've learned to deal with this by slowing down the heating process, but it's frustrating when your glass cracks right down the middle.
LARGER MICROWAVE KILN: The big kiln is bulkier and more difficult to handle. When I need to bring it to class, it's a pain fitting it into my bag. It also take about 8-10 minutes (depending on the microwave) for it to even begin heating.
Still, there are many advantages to using a large kiln. For one thing, it holds more pieces, which is especially helpful when I'm teaching. Because it heats more slowly, large pieces fire more evenly. I can stick a big piece into the large kiln, set the timer for 8 minutes and not have to worry about cracking. Even better, the slow heating time helps smooth out jagged edges, so glass that was cut on an angle ends up lining up with the rest of the piece.
The large kiln works best for larger pieces, however. When I've heated a batch of smaller ones, not all of the pieces have fired at the same rate and I've had to re-do them. Not does the big kiln work well for decals, which tend to come out over or under-fired. Of course, it's also more expensive.
Overall, I'm happy with both of my kilns and am getting better at using each for different techniques. Mostly, I love the fact that I can make beautiful pieces in my apartment -- and that the kilns are portable, which allows me to teach in different places.
Whether you get a large or small kiln, you'll enjoy your foray into glass making. Of course, wear gloves, protective goggles and always, ALWAYS put safety first!
Check out my handmade glass, enamel and wire wrapped jewelry at my WEBSITE/STORE or Naomi's Designs and MayaGirl Creations.
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