An Experiment in Frit Making: Lessons Learned

I mentioned that my goal this year is to use up my scrap glass. For the red, orange and yellow glass, I decided to try making frit as I typically use these colors in tandem and they typically do not fire as well in the higher temperatures used for pot melts.


Frit is basically crushed glass, which comes in a range of sizes from powder to coarser bits. Frit is made by crushing glass either with a hammer or a pre-made metal device called a "frit maker," which is designed to more easily crush the glass. Given that this is my first time and I'm not sure how often I'll be making frit, I decided to go with the hammer method. To make it easier to crush, I first quelch the glass. Quelching involves heating the glass (I heated the glass to 1000 degrees) and quickly cooling it in water. I heard that there would be steam and a little splattering at this point. This didn't happen with me although I could hear some sizzling when it first hit the water. As you can see the ice is still in tact after the glass was dumped in.


The glass is still in tact as well. I thought it might break up into pieces but it did not. However, there are tiny fractures in it. It has the sound of plastic rather than glass, and I can break a piece by bending it with my hands.


To crush the glass, I contained the glass using a stainless steel ring. As you crush the glass, the pieces want to fly somewhere and the ring helps keep them contained. I also placed a plastic baggie on top. The bag keeps the glass from flying but allows me to see through it. In addition, it keeps any metal from the hammer from falling into and contaminating the glass bits. I also placed the glass on a few pieces of re-inforced plastic tarp. The tarp was strong enough to withstand the crushing (although I had to double it towards the end) and didn't leave fragments of plastic in the glass.


After I crush the glass, I pour it into the frit sifter, which contains a grid on the bottom to separate the glass by size. The bigger pieces stay on the top and smaller pieces fall to the bottom. Fortunately, I want coarse pieces of glass, so I am saved from all the pounding required to get the glass to be really tiny :)



Lessons Learned:
Use a stainless steel bowl for heating the glass. This makes it easier to dump the glass into the bowl of water. I also used tongs and welder gloves to protect me from the heat.

Use the side elements to heat the kiln if you have this option. There's much less heat radiating out than if you're using the top elements (forgot about this with the second round).

Quelching, while more time-consuming, is much better than just hammering. The glass is easier to break and less prone to having sharp edges, which is a huge benefit! With all the broken glass, I did not get one cut and could run my hands through the broken glass. I'm positive that had I not quelched the glass, that I would have used my fair share of bandages.

Using the tarp, ring and baggies are great ideas, especially since this is fairly messy. The tarp is sturdy and great for pouring, while the ring and baggies help keep the glass contained. A vacuum cleaner is also a must.

Make the frit, starting with the lighter colored glass and move to the darker colors. While I vacuumed the tarp, ring and frit sifters between crushings, there's still a possibility that tiny bits of glass could have been transferred. Having each glass color be slight darker, minimizes the appearance of any stray fragments should this have happened.

Buy or make a frit sifter. Even if you want large pieces, you will get every size from powder to chunks. A frit sifter helps sort out these sizes and is especially helpful for the smaller sizes (powder, fine, medium).

Thoughts Moving Forward:
For me, frit making was a little more time consuming, labor intensive and messy than I would have liked. If I choose to make more items using frit, especially using smaller pieces of crushed glass, I would purchase pre-made frit rather than make it myself. However, given that this is a great way to use up my reds, oranges and yellows, I'll still continue to make frit. And, I might consider making more frit with excess glasses that I don't have alternative ways of using. For example, I have a lot of excess amber glass. Amber is not a glass that's in my color palette but was something that I used quite a bit for Christmas ornaments. Another consideration is how my fused glass pieces turn out with the frit I've made. I'll write about these projects as they happen down the road. I can tell you that the first one didn't turn out. However, now the challenge is to make it into something usable. Thank goodness for my tile saw! More on this in future posts (once I create something worth sharing)...

Fused Glass Plates Using Shelf Melts - Part 2

In my prior post, you saw the making of the glass using a high temperature shelf melt. While I am still working on how to create a swirlier effect (another attempt is in the kiln as I write), I wanted to share with you how the cut glass looks in finished plates.




Another type of shelf melt that I've tried is one that does not involve high temperature. This is fired at regular fusing temperatures and includes a bubble squeeze to eliminate the air so that glass lays side to side. As the glass will be cut up in 1/4" strips so that the sides lay face up, you can use larger pieces that you may not have been able to with the prior melt.

As you can see, this glass is not as attractive as the glass in the prior post. However, once it's cut up, the results are just as striking, if not more.


Here's a couple of photos of the slices of glass used in plates. I'd be interested to know which style of melt you prefer. Most likely I'll be doing a combination of the two :)

How to Make Fused Glass Shelf Melts

As mentioned, my 2011 plan is to use up my excess glass. I've made a few shelf melts before with a nice swirly effect.


So, I was hoping to replicate the results. To make the shelf melts, I take the temperature to a level where the glass becomes molten so I get some movement. Because of this, I placed the glass pieces in a stainless steel ring, which acts as a "dam" to contain the glass. The ring is lined with fiber paper, so the glass does not stick to it. Also, on the bottom half, I placed small scoops of bubble powder to see if it would help create the swirly effect. Then, I topped it with clear glass.


Unfortunately, the results did not quite have the same swirly effect I had hoped. And, the bubble powder really didn't do much. So, I tried again. With glass, it often takes several to many attempts to get the results you want. The second time, I used bigger pieces of glass to trap more air, which should create more bubbles and thus, a swirly effect when the bubbles surface. Again, the results looked pretty similar to the first.


When I checked my firing schedule against those I made in the past, I realized that I was using a different schedule. I basically use the same schedule as I do for making pot melts but realized that in the past I increased the speed that the temperature ramps up because I don't have to worry about the pot cracking. The third attempt (again with some bubble powder on the bottom) was better but still did not have the same amount of swirling as the originals. I'll have to keep playing and post again once I figure it out.

However, when I cut up the glass (to be used in plates), I actually liked those with less swirls to the one with more. There's more contrast between light and dark. The first two from the left are the two pieces of glass I just made shown above and the column on the right is the glass I made earlier (also above).


What do you think? I'm excited to include these in some plates. I have the first one in the kiln right now and will post some photos once I get a few of these finished.

New Year, New Fused Glass Projects

The great thing about the beginning a new year is planning out what you hope to accomplish for that year. This year I am especially enthusiastic about all the new fused glass projects I plan to do. Not only do I hope to make some cool new glass but I also plan to use up the excess glass that I've been accumulating.


You may not be able to tell from the photo but some of these bins are stuffed and the shelf is bowing out a little!


The nice thing about using up excess glass is that you can make some pretty interesting designs from melting smaller pieces of glass together.




Okay, so here's what I plan to make this year:

Fused glass bowls using cut up shelf melts. I started making a few plates with this technique last year. I hold these at a higher temperature to get the glass to flow more.


I'll also play with making shelf melts at lower temperatures where the glass does not flow and cut them up into plates.

Frit cast bowls using frit that I make myself (this should be interesting as you heat the glass and then plunge it into cold water so it shatters easily upon impact to make frit)

Picture frames

New jewelry designs, although jewelry doesn't really use up much excess glass

And, later in the year I will hopefully experiment with pattern bars and new holiday ornaments (poinsettias and new snowflake designs).

Of course, I'll keep you posted as I'm in the process of experimenting with and creating the new work. I'm looking forward to seeing how the projects progress and getting started!

Making the Holidays Merry with Fused Glass

I love the holidays and making the house festive. I realize how much I miss this now that I'm in a apartment in the Seattle area and all of my Christmas decoration are in storage. In the spirit of Christmas, I thought I would share a could of decorating ideas for the holidays using fused glass, of course:

Use fused glass coaster bottoms under candles to add color. I typically do this with 3 candles (one larger and two smaller) and use the 4th coaster under the soap dispenser. This is especially nice with holiday coasters and red, green or blue candles and a great way to add color. Another alternative is to spread out the candles and coasters (rather than group them as three) or give a candle and coaster as a holiday gift. And, of course, coasters can be used just as they are too ;)

Make entertaining special and serve desserts on fused glass plates or platters. Last year, I had a holiday open house and used platters for the breads and cookies, a nice touch!

Decorate the tree with fused glass ornaments. I enjoy making ornaments, even though they can be very time consuming. It can make the tree a little more special to have something handmade and original on it. Ornaments can also make very nice hostess gifts.

And, for those of us who are space constrained or decorating minimalists, it's still nice to have a tree of some sorts in the house :)

Happy holidays! Wishing you a wonderful Christmas, filled with the joy of the season.