Fused Recycled Window Glass Lattice Bowl
This is the third in our series of tutorial using recycled window glass. This is a slightly more complex project, but the results are well worth it!
1/4″ thick Window glass
Floral former or fiber paper wrapped pot
Prepared kiln shelf
This lattice pattern project is extremely showy and looks great. It does require a slightly higher skill in cutting and some additional time annealing due to the changes of glass thickness in the fused finished piece.
If your glass isn’t already a square, cut it into a square.
Mark the square in half inch wide strips. If you are hesitant as to your cutting skills, 1” strips are easier to cut and will still look great. Don’t worry if you break a strip or two, we can space out the pattern slightly.
After cutting all of the strips, clean them and then divide into two equal piles.
On the kiln shelf, place the first layer of strips equidistant to their width. It’s a good idea to use one of the strips as a baseline for how wide your lattice needs to be. Then space the remaining strips evenly across the width of the piece.
Place the second layer at right angles to the first, forming a lattice pattern. Because we want this project to fire perfectly flat, we are going to use a firing schedule that has a longer top hold time than the standard fusing firing schedule.
Full fuse firing schedule
(1/4″ window or 2 layers bottle glass, sheets, not frit!)
|Ramp Rate (F)||Hold Temp (F)||Hold Time|||||Ramp Rate (C)||Hold Temp (C)||Hold Time|
|300/hr||500||15 min|||||148/hr||260||15 min|
|250||1100||10 min|||||121/hr||593||10 min|
|250||1550||10 min|||||121/hr||843||10 min|
|9999/hr||1030||40 min|||||9999/hr||555||40 min|
|off to room temp|||||off to room temp|
After fusing, the lattice can either be slumped into a bowl, or with a floral former to create a dramatic sculptural shape.
Because the lattice isn’t continuous glass, it will have a tendency to thermal shock during slumping, so we are going to use a much slower slumping schedule than the standard schedule.
Slump firing schedule
(1/4″ or 2 layers bottle glass)
|Ramp Temp (F)||Hold Temp (F)||Hold Time|||||Ramp Temp (C)||Hold Temp (C)||Hold Time|
After some practice, you can expand your lattice making skills to larger projects: