Reheating the Brass Gimbal

Can a crushed brass ring be coaxed back into true circle three hundred feet above the canals, or would the pressure of my clumsy thumbs snap two centuries of glassmaker history into emerald gravel? That was the wager dangling over the abyss of the Grand Canal, where three pine planks swayed beneath my courier boots and the approaching oceanic storm shelf crept closer by the minute. I needed that collar round, and I needed it round before Lieutenant Hunor’s flash-powder smoke cleared from the water below.

Without the mounting gimbal, Sarolta’s beryl prism was nothing more than an expensive paperweight. Master Nyírbátori had warned me often enough: celestial quartz could endure the thermal fury of orbital solar broadcasts, but an uneven squeeze of half a millimeter against an out-of-round socket would crack the facets the instant the beam struck.

"Look at this mess," I muttered, holding the damaged brass ring up to the grey daylight.

A stray privateer quarrel had flattened the outer rim into a pinched oval. The delicate retaining threads were warped, and the lower guide pins flared outward like the gills of a suffocating perch.

Hetyke sidled along the scaffold rail, his talons clicking on the frost-dusted timber. He lowered his beak, inspecting the warped ring with the haughty skepticism of an imperial tax assessor discovering a short ledger. He emitted a guttural cluck that translates roughly across courier cant as: You dropped the parcel, you pay the toll.

"I didn't drop it," I told him, blowing warm breath into my numb knuckles. "A privateer shot it. There's a distinct legal difference, not that the guild tariff committee would care."

A vicious crosswind barrelled through the spire struts, rattling the scaffolding ropes against the stone buttresses. Down in the basin, sulfur smoke from the detonated powder kegs rolled across the churning green water, masking the lockhouse courtyard. But through my captured brass spyglass, I could already see armored privateers crawling back onto the stone quays like angry crabs, hauling iron sledges and heavy pry-bars toward the inner doors. Hunor’s diversion had bought me ten minutes, maybe twelve.

I set my leather satchel between my knees and unbuckled the lower strap.

Every seasoned rooftop courier in Gyöngyvár carried a brazier kettle for long winter shifts. Mine was a twin-chambered tin cylinder, battered from years of roof slides and packed with slow-burning fruitwood embers beneath an upper reservoir of spiced chicory brew. I popped the brass vent latch. A faint red glow pulsed in the lower grate, exhaling the rich, comforting scent of charred pearwood and roasted chicory root.

It was not a blacksmith's hearth, but brass does not need an iron forge to soften. It only needs steady warmth and an unyielding surface to guide its memory.

"Hetyke, on the rail," I commanded, pulling my small copper wire pliers and the heavy disc of Nyírbátori’s Master Alignment Cipher from my tunic.

The falcon remained rooted to his pine beam, ruffling his slate-grey mantle against the freezing gusts. He stared at me with unblinking amber insolence.

"Seven roasted sunflower seeds," I offered.

He gave a dry clack of his beak.

"Eight. And two dried currants when we reach the belfry floor."

That satisfied his personal union regulations. Hetyke hopped onto the cross-brace directly windward of the kettle, spreading his broad, dense flight feathers into an impenetrable feathered awning. The shrieking sea gale buffeted his back, but beneath his outstretched wings, the air over my knees dropped still.

"Hold steady, bailiff," I whispered.

With the wire pliers, I gripped the flattened brass collar and suspended it two fingers above the glowing fruitwood coals. The cold metal hissed softly as ambient moisture evaporated from the rim. I blew gently on the embers. The orange glow brightened to cherry red, painting the underside of Hetyke's grey feathers in warm firelight. The bird grumbled under his breath, shifting his talons to avoid the rising draft of heated air, but he kept his wings locked in place like twin woolen blankets.

Heat crept through the brass alloy, turning the dull tarnished yellow into a faint, shimmering bronze.

Now came the delicate part. An amateur would have beaten the hot ring with a hammer, leaving dents and flat spots that would pinch the crystal to splinters. A courier knew that metal had to be led, not bullied.

I took Master Nyírbátori’s brass cipher disc and turned it over. The reverse face of the instrument was machined with a tapered mounting collar designed to calibrate optical gauges before tower runs. It was solid cast bronze, ground to the exact exterior diameter of the belfry beacon spindle.

Holding the cipher flat on my leather apron, I used the pliers to press the hot, softened gimbal ring down over the bronze mandrel.

The brass resisted for a heartbeat, stubborn and cold-hardened from the impact. I gave the ring a slow, firm twist against the taper, coaxing the flattened edges outward against the hard curve. Metal met metal with a tight, dry rasp. I leaned my weight into the turn, guiding the pinched shoulders back toward circular harmony.

The warped rim groaned, stretched under the steady pressure, and slid down the mandrel until it seated flush against the master shoulder.

"Almost," I murmured, my breath pluming white against Hetyke’s wing.

I lifted the ring with the pliers and rotated it a quarter turn, checking the symmetry against the calibrated guide marks Nyírbátori had etched into the disc. One side still bulged by the thickness of a thumbnail. I held it back over the coals, letting the heat sink deep into the pinched bend, then pressed it over the bronze plug once more, burnishing the outer curve with the smooth wooden handle of my pliers.

The ring slipped down smoothly, spinning freely around the taper without catching or binding.

I pulled my tin flask from my coat, uncapped the spout, and poured a thin trickle of cold chicory tea over the hot brass. Steam hissed into the wind, carrying a sharp aroma of burnt chicory and hot copper. The metal contracted instantly, locking its restored shape into place.

Hetyke snapped his wings shut with a sharp flap, shook the soot from his tail feathers, and pecked my knuckle with precise, indignant force.

"Payment delivered," I said, fishing eight fat roasted seeds from my pocket and spilling them onto the flat timber beam. The falcon devoured them in three greedy swallows, then watched me with renewed interest as I reached into my satchel.

I unwrapped Sarolta’s oiled lambskin.

The emerald sun-prism emerged into the pale afternoon light, its beryl facets capturing the grey daylight and splintering it into deep moss-green highlights. My fingers were shaking slightly from the cold, but my grip was steady.

Holding the crystal by its frosted handling edges, I lowered it into the cooling brass gimbal.

The stone met the inner lip. For a terrifying second, it hesitated against the upper groove. Then, with a soft, resonant snick, the emerald slid home. The three spring-steel retention clips on the rim clicked into the ground crystal notches with absolute precision.

The assembly was whole. I turned the gimbal in my fingers. The prism sat dead center, true to within the width of a spider's silk, perfectly aligned with the three brass sighting reticles.

A wide grin cut through the chill on my face. "What did I tell you, Hetyke? Pure coppersmith craft."

Hetyke gave a dismissive croak, but his eyes followed the green light pooled inside the glass.

A heavy, reverberating boom shuddered up through the spire timbers as the lockhouse flood doors gave way below. The iron sledgehammers had finished their work, but what followed was not a panicked rout. Through the wind came the measured, two-toned blare of Hunor’s bronze horn, signaling that his watchmen had fallen back in good order to seal the inner water gate. They had given me every minute they possessed.

I buckled the restored brass gimbal securely into my padded chest harness, feeling the warm, solid ring seat firmly against my ribs. The beryl glass rested safely inside its true circle.

Above my head, the final wooden ladder climbed twenty paces through the gale toward the open lantern cupola, where the beacon spindle waited for its heart.

Hetyke fluttered up to the first ladder rung, shook the frost from his wingtips, and looked down at me with an impatient, amber-eyed stare that clearly suggested human legs were an embarrassingly sluggish method of climbing.

"Keep your feathers on, Inspector," I said, gripping the pine uprights. "I'm right behind you."