While this post may seem simple to some glass fusers, the “rule” for straight lines is one that I often need to remind myself. Many fused glass plates/bowls are made with two sheets of 3mm glass. Sometimes it is easier for me to put the larger glass sheet on the kiln shelf and then layer the varied color pieces on top of the clear sheet. However, since I am a lover of straight (I mean really straight) lines, you accomplish this by putting those pieces for which you want to maintain the straight lines on the bottom layer as I believe the weight of the top sheet helps keep that layer from spreading and does a better job of maintaining the lines.
I forgot in the Daisy plate below and layered my yellow daisy part sheet on top along with the blue and white pieces and if you look closely you can see that the blue lines and a few others are a little wavy.
Of course, it usually takes a misstep to trigger a memory and this plate reminded me what to do for future linear pieces. In the black and white piece, the lines are much more crisp as I put them on the kiln shelf first and then layered the clear on top. Then after the first full fuse, I flipped it, sandblasted the new top and fired it to a nice matte finish.
The Mondrian piece below was an experiment. I was trying to figure out an easy way to get a very thin line for a small fused glass piece and decided to use black noodles which are about 5mm wide. (The right way to do this is to cut 6mm strips of black glass and lay them on their side, but thin strips are much harder to cut and I was taking a short cut.) I cut each glass piece twice once with the blue, red, yellow and white glass and then secondly with clear. I then layered the colors on the bottom on the kiln shelf separated by the black noodles and then added the clear pieces on top. I should have taken a little more time with the grinder to get each piece exact as you can see where some of the noodles had a little room to spread, but overall, I accomplished the look I wanted and this piece ended up being one of my favorite pieces. Again I flipped it after firing, sandblasted and refired with the bottom now as the top to a matte finish.
Simple rule to follow if you like straight lines like I do!