information on cutting glass curves, ovals and circles through online
searches, books and classes.
5. After cutting glass to the desired shape, clean and dry with a lint-
free cloth (FIG. 3). If using fusing glue to hold your glass project in
place, make sure the glue is completely dry before firing.
Step 4 – Firing Glass
1. Cut a square of kiln paper to fit the base of the Fuseworks™
Microwave Kiln. Place paper on the kiln base. Kiln paper is only
good for one firing.
2. Layer cut glass on top of kiln paper (FIG. 4). Leave at least a 5/8”
border around the glass and the edge of the kiln paper. Do not
allow the glass to touch the sides of the kiln wall or the base of the
kiln. Glass allowed to touch the kiln base or walls will stick and can
cause irreparable damage to the kiln during the fusing process.
3. Carefully place kiln with glass in the center of microwave oven
(FIG. 5).
WARNING:
Never leave microwave or kiln unattended
during the firing process.
4. Set temperature for the microwave on high. Choose times for firing
from the chart below. PLEASE NOTE: Every microwave oven and
kiln will vary. The ranges found in the chart below are average
ranges. Actual times will vary depending upon your microwave
oven, the thickness of glass, as well as your desired results.
WATTS
MINuTES
GLASS THICKNESS
800
3 to 4
¼” (2 - 1/8” pcs.)
1100
2 to 3 ½
¼” (2 - 1/8” pcs.)
1200
2 to 3 ½
¼” (2 - 1/8” pcs.)
HOT TIP!
Take good notes! Use the Firing Log on back of this manual to keep important information
about fusing projects. This information will help repeat good projects and prevent bad ones.
5. When microwave time has expired, use heat resistant gloves or mitts to carefully open the lid. If your
piece is not fused to your liking, return kiln lid and microwave at 30 second intervals until piece is
fused. Do not leave the lid off the kiln for extended periods of time during this stage. Never touch the
glass. Do not heat for more than 6 minutes.
HOT TIP!
HOT glass looks like COLD glass, BE CAREFUL!
6. A good fuse indicator is to watch for a red glow to appear in the hole at the top of the kiln. When it
changes to a yellow/orange, this will indicate the glass has entered a full fuse stage. At this stage
glass corners will become rounded. When you see more of a yellow glow, the piece should be fully
fused.
HOT TIP!
To see the glow more readily, cover the microwave light by cutting a small piece of cardboard to
cover the light source and tape into place.
Step 5 – After Firing
1. When desired results have been achieved, using heat resistant gloves, remove the whole kiln from
the microwave oven. Set on a heat resistant pad. The area around the Fuseworks™ Microwave Kiln
should be free of clutter and in a safe location. Do NOT allow to cool under an overhead cabinet.
Never block the opening at the top of the Fuseworks™ Microwave Kiln.
2. Do not remove lid at this time. Removing lid will cause thermal shock, resulting in breakage.
3. Allow your fused piece to cool for a minimum of 45 minutes without removing kiln lid (FIG. 6), time
could be longer depending on the thickness of the project. You will be tempted to open the lid and
©2009 Diamond Tech | 5600 Airport Blvd | Tampa, FL | 800-937-9593 | PH: (813) 806-2923 | www.DiamondTechCrafts.com
FIG. 5
FIG. 6
