Use locking tweezers or enameling spatula to carefully transfer a blank to torching basket (in tripod), and torch fire.
Watch closely: when the enamel begins to melt, you'll see a glossy "orange peel" stage where the enamel beads up before slumping to a smooth fired sheen. Fire a bit more, but don't overheat - some colors will scorch.
Use fiber-grip tweezers to carefully grasp fired piece by edges (don't damage the fresh enamel). Set aside and allow to cool in a warm pan of vermiculite.
Note: Because you are enameling brass and not copper, colors may not always turn out as expected. Many turn out peach after firing. No worries, just come back over the top with with another thin layer to add some color back onto the blank!
After cooling, scrub firescale off top portion and back with Penny Brite.
2 each #44-720-59 24ga Brass Stamping Blank, Bar, 38x6.5mm or, cut your own blanks from copper strips, and file the corners rounded:
1 6-pack [use 1/2 of one strip] #64-981-24-25 Copper Sheet, 24 Gauge, 6x0.25" Note: colors will be more reliable with copper.
1 each #86-220-07 Penny Brite Copper Cleaner
1 each #81-510-001 Klyr Fire, Holding Medium
Tools
#69-235 EURO TOOL Metal Punch, Two Hole
#69-650-S Small 80-Mesh Screen Sifter
#65-153 Torching Basket for Enameling by Eugenia Chan
#69-354-9 EURO TOOL Tripod with Mesh Screen, 9"
Fire-Resistant Work Surface: #69-182 Fire Blocks, 12"x12" Ceramic Tiles and/or Cement Tile-Backer Board
#69-613 Handy Flame II Propane/MAPP Torch - or -#69-620 Handy Flame Butane Torch (Both of these torches give you a larger flame than the butane micro torches.)
#69-428 EURO TOOL Fiber-Grip Cross-Locking Tweezer
#69-056 EURO TOOL Side Flush Cutter
#69-275-02 Wubbers Round-Nose Jewelry Making Pliers