Sprues and Gates

The sprue system was the plumbing of the lost-wax process, the network of wax rods and cups and channels that would, when the wax was burned out and the ceramic shell remained, become the pathways through which two thousand degrees of molten bronze would flow to fill the void left by the lost wax, and designing a sprue system was an act of hydraulic imagination, of seeing the finished mold as a system of rivers and tributaries and understanding where the metal would flow freely and where it would hesitate and where it would stop, creating voids and cold shuts and misruns that would ruin the casting, and Oren had been designing sprue systems for three decades and still approached each one as though it were the first, because no two castings were alike and the bronze, like all liquids, had a mind of its own.

He started with the main sprue, a thick wax rod, twelve millimeters in diameter, that ran from the pouring cup at the top of the form — the funnel through which the bronze would enter the mold — down along the outside of the sculpture to the lowest point of the form, and from this main sprue he ran secondary sprues, thinner rods of eight millimeters, at intervals that would ensure even flow, each one entering the sculpture wall at an angle of forty-five degrees, because a ninety-degree entry created turbulence and turbulence created porosity and porosity was the enemy, the invisible flaw that lived inside the walls of the bronze like a disease that showed no symptoms until it was too late.

The analogy was not lost on him.

He attached each secondary sprue to the wax form with a heated spatula, melting the joint until the wax of the sprue and the wax of the form became one continuous material, because any gap in the joint would become a leak in the ceramic shell and a leak in the shell would allow bronze to escape during the pour, which was dangerous — two thousand degrees of liquid metal running across the foundry floor was the kind of event that featured in the nightmares of every caster who had been doing this long enough to have seen it happen — and Oren had seen it happen once, in the Morris Singer foundry in London, a crucible tipping wrong, the bronze spilling like luminous honey, and the old casters had moved with a speed that contradicted their age, stepping back, clearing the path, letting the metal find its level on the concrete floor where it cooled into a puddle of wasted bronze and wasted work that no one spoke about afterward except in the careful, allusive way that people speak about a near disaster.

He worked on the sprue system all morning.

By noon the memorial sculpture looked like a different thing entirely — not the clean organic form it had been but a bristling mechanical object, rods and channels running across its surface like a diagram of its own circulatory system, and this was always the strange middle phase of the lost-wax process, the phase in which the sculpture stopped being a sculpture and became an engineering problem, a fluid dynamics exercise, a calculation of flow rates and cooling rates and the particular behavior of silicon bronze at two thousand and fifty degrees Fahrenheit.

Katla was arriving at three.

Her flight from Copenhagen landed in Pisa at two-fifteen, and Lina had wanted to go to the airport to meet her but Oren had insisted on going himself, because the drive from Pietrasanta to Pisa was forty minutes on the autostrada and Lina had begun to tire in the afternoons in a way that was new, a heaviness that settled over her around two o'clock and that she disguised with activity — cleaning, cooking, organizing the folder that still sat on the kitchen table like a monument to the practical — and Oren had noticed the disguise because disguise was his profession, he who made new bronze look old and raw metal look weathered, and he recognized the effort that went into the appearance of normalcy, the energy required to maintain a surface that contradicted what was happening underneath.

He drove the Fiat Panda to Pisa with the windows down because the air conditioning had stopped working two summers ago and because the May air was warm and carried the smell of the coast — salt and pine and the faint industrial tang of the port at Livorno — and the autostrada ran along the edge of the plain between the mountains and the sea, the Apuan Alps to the left with their marble quarries visible as white scars on the green flanks, and the Tyrrhenian Sea to the right, invisible behind the coastal development but present in the air, in the humidity, in the quality of the light.

The Pisa airport was small and efficient in the way that Italian airports were efficient, which was to say not very, but Katla's flight was on time and she emerged from the arrivals gate carrying a single backpack and wearing the expression of a twenty-four-year-old who has traveled alone across Europe to see her dying mother and who has decided, somewhere over the Alps, to be brave about it.

She looked like Lina.

This had always been true but was more true now, or more noticeable now, because Oren was looking at his daughter through the lens of what Lina had been at that age — tall, fair, direct, with the same way of standing that communicated both patience and impatience simultaneously, as though she was willing to wait for you but wanted you to know that she was willing, which was itself a form of impatience — and seeing Lina at twenty-four made him see Lina at fifty-one differently, as a version of this young woman who had been revised by time, the way a bronze was revised by its patina, the underlying form still present but overlaid with the accumulated chemistry of years.

She said, Papa, and she hugged him in the airport with a force that was not proportional to their three months apart but to something larger, and he held his daughter and felt the armature inside him flex under a new weight and he thought, I must not break, and then he thought, The armature holds, because that is what the armature is for.

They drove back to Pietrasanta in the Fiat Panda with the windows down and the warm air blowing through and Katla talked about Copenhagen — her job at the design firm, her apartment in Norrebro, the Danish boyfriend named Mikkel whom Oren had met once and found pleasant but insubstantial, like a patina applied too thinly — and Oren listened and the talk filled the car the way the warm air filled it, flowing through the open windows, touching everything, temporary and necessary.

She did not ask about her mother's diagnosis.

She knew everything already. Lina had called her the day after the results came, and Katla had called back the next day with questions that she had clearly prepared, written on a list, medical questions about staging and treatment protocols and survival rates that she had researched with the thoroughness of a woman who had inherited her father's relationship with preparation and her mother's relationship with facts, and Lina had answered every question, and Katla had asked one more: Is Papa all right, and Lina had said, He is working, and Katla had understood this as the answer it was.

They arrived in Pietrasanta at three-forty.

Lina was at the door of the apartment, standing at the top of the stairs that led down to the studio, and Katla went up and embraced her mother and Oren stood at the bottom of the stairs and watched this embrace from below, the two women holding each other in the doorway with the afternoon light behind them, and the image had a quality that he recognized from his work — the raking light, the two forms becoming one form, the shadow and the substance — and he thought that if he could cast this moment in bronze it would need no patina, that the surface of this moment was already complete.

He went into the studio and left them to talk.

The memorial sculpture sat on the worktable with its sprue system bristling from its surface, waiting for the next step, which was the investment — the application of the ceramic shell that would become the mold — and the investment could not happen today because the sprue joints needed to cure for twenty-four hours before the shell was applied, and so the sculpture waited and Oren waited and the day continued in the way that days continued now, which was ordinarily, unremarkably, in the language of coffee and meals and conversation, a language that ran like a river over the rocks of the extraordinary, smoothing them, wearing them down, making them part of the landscape.

Katla came down to the studio at five.

She stood in the doorway the way Lina had stood in the doorway five weeks ago when she said, I found a lump, and Oren was struck by the parallelism, by the way the doorway framed his women one at a time, presenting them to him in the same rectangle of light like portraits in the same gallery, and Katla said, Show me what you are making.

He showed her the memorial sculpture.

He explained the sprue system — the main sprue, the secondaries, the pouring cup, the vents that would allow air to escape as the bronze flowed in — and Katla listened with the attention she had always given to his explanations of the process, an attention that was genuine and specific and that had begun when she was a child in the studio, watching him work, asking questions that were better than the questions his apprentices asked, questions like, Why does the wax have to be lost, and, Where does the bronze go when it is too hot, and, If you put a different chemical on it would it turn a different color, and the answers to these questions were, respectively, Because the original must be destroyed to create the lasting thing, and, It goes everywhere, which is why we must build channels to guide it, and, Yes, every chemical is a different color, every reaction is a different surface, and the choice of chemical is the choice of what the bronze will become.

Katla looked at the memorial and said, It is like a boat.

He said, Giuseppe said the same thing.

She said, It is like a boat that is also a hand.

He looked at the form again and saw what his daughter saw — the boat shape that Giuseppe had identified but also, in the curve of the walls and the thinning of the rim, the suggestion of a hand cupping upward, open, offering or receiving, and he had not seen this either, had not designed it, but there it was, emerging from the wax the way a patina emerges from the chemistry, not imposed but discovered, and he was grateful to his daughter for seeing it because seeing was the first step of meaning and meaning was the first step of the patina and the patina was the first step of the thing lasting.

They went upstairs together.

Lina had made dinner — pasta with anchovies and breadcrumbs, a Sicilian dish she had learned from their neighbor Signora Ferretti who was eighty-three and from Palermo and who cooked with a ferocity that suggested she was in a fight with the ingredients — and the three of them sat at the kitchen table and ate and the folder was no longer on the table, Lina had moved it, and the table was set with the white ceramic plates with the blue rims and the water glasses from the set that Katla had given them for their twenty-fifth anniversary, and the setting was precise, was Lina, was the armature of the domestic made visible in the placement of forks and knives and the folding of napkins and the particular angle at which the bread basket sat in relation to the oil and the salt.

Katla said, I have taken two weeks off work.

Lina said, Two weeks is too long, you will be bored.

Katla said, I will help Papa in the studio.

Oren said, You will get wax on your clothes.

Katla said, I brought old clothes, and she smiled and the smile was Lina's smile, the same geometry, the same slight asymmetry, the right side lifting a fraction higher than the left, and Oren thought that this was the most precise form of casting he had ever seen — the reproduction of a smile across a generation, a lost-wax process in which the original was not lost but was sitting across the table, eating pasta with anchovies, alive.

After dinner they walked.

This was a family ritual, the post-dinner walk through Pietrasanta, and they took their usual route — down Via Sant'Agostino to Piazza del Duomo, around the Duomo with its white marble facade now grey in the evening light, down Via Mazzini past the closed shops and the open bars, to the small park at the edge of town where the sculptures were installed — large bronze and marble pieces by the artists who worked in Pietrasanta's studios, the kind of ambitious public art that smaller towns in other countries would not have tolerated but that Pietrasanta accepted as its due, as the natural consequence of being a town built by and for the makers of things.

They walked slowly because Katla matched her pace to Lina's and Lina's pace had slowed.

This slowing was not dramatic. It was the kind of change that a stranger would not notice, that only someone who had walked with Lina for twenty-six years would register, a reduction of perhaps ten percent in her usual speed, a slight shortening of the stride, an occasional pause at a corner or a curb that had not required a pause before, and Oren noticed it and Katla noticed it and Lina knew they noticed it and the knowing was part of the walk now, part of the ritual, part of the surface they were all applying to the evening to make it look like an evening and not like a rehearsal for evenings to come when the walk would be shorter and slower still.

In the park they sat on a bench across from a large bronze figure by a Polish sculptor, a reclining woman whose surface had been given a deep brown patina that was beginning to develop verdigris on the nose and the breasts and the raised knee, the places where the rain hit first and sat longest, and Oren looked at this patina with professional assessment — it was a good base patina, properly sealed, but the wax was wearing thin on the exposed surfaces and the natural oxidation was beginning, which meant the sculpture was developing two patinas simultaneously, the applied one and the natural one, and they would eventually merge, the way all patinas merged, the artificial becoming indistinguishable from the genuine, the deliberate becoming indistinguishable from the accidental.

Katla sat between them on the bench.

She had always sat between them, from the time she was small enough to fit in the space between their bodies, and now she was too tall and too long-limbed to fit comfortably but she sat there anyway, her shoulders touching both of theirs, forming a bridge between her parents, a connection that was physical and structural and that had the quality of an armature — hidden, load-bearing, essential.

They did not talk about the diagnosis on the bench.

They talked about the sculptor whose figure they were looking at, a man named Kowalski who had worked in Pietrasanta for ten years and who had recently moved to Berlin, and they talked about the patina and Oren explained how it was developing and Katla asked questions and Lina listened and the evening settled around them like a patina of its own, a darkening of the light that transformed the park and the sculptures and the faces of the three people on the bench into something that was still themselves but also more than themselves, the way a bronze with a good patina was still bronze but also more than bronze, the surface adding a dimension that the material alone did not possess.

They walked home in the dark.

The streets of Pietrasanta at night had a particular quality that Oren had loved since the first time he walked them — the cobblestones reflecting the streetlights, the marble facades of the buildings glowing with a faint phosphorescence that was not actually phosphorescence but was the marble's natural reflectivity, the white Carrara stone bouncing back whatever light was given to it, and this reflectivity made the town seem lit from within, as though the stone itself were luminous, and Oren had always thought of this as Pietrasanta's native patina, the quality that the town's surface had developed over centuries of being made of light-catching stone.

At the apartment Katla went to the guest room and Lina went to the bathroom and Oren went down to the studio.

He turned on the light and looked at the memorial sculpture with its sprue system.

He thought about the next steps. Tomorrow the sprue joints would be cured and he could begin the investment — the ceramic shell — which was a process of patience and repetition, coat after coat of ceramic slurry and stucco, each coat drying before the next was applied, the shell building up over days until it was thick enough and strong enough to receive two thousand degrees of molten bronze without cracking, and this building-up was the opposite of the hollowing-out he had done days before, an accretion rather than a subtraction, an addition of layers rather than a removal of them, and Oren thought that this alternation — build up, hollow out, build up again — was the rhythm of the process and perhaps the rhythm of everything, the systole and diastole of making, of living, of losing and replacing what was lost.

He turned off the light and went upstairs.

Lina was in bed, reading the Solstad novel by the dim light of the bedside lamp, and Oren got into bed beside her and she did not look up from the book but she shifted her weight slightly toward him, a movement so small that it would have been invisible to anyone but him, and he shifted toward her, and the two small movements closed a gap that was already small and the gap that remained was the gap that always remained between two bodies in a bed, the irreducible distance that even twenty-six years of marriage could not close, and this distance was not a failure but a fact, and Oren accepted it the way he accepted the limitations of his materials — the bronze would always oxidize, the patina would always be an approximation, the wax would always be lost — and the acceptance was not resignation but something closer to love, a recognition that the imperfection was part of the beauty, that the gap was part of the closeness, that the loss was part of what remained.

Lina turned a page.

The sound of the page turning was the sound of time passing, one leaf at a time, and the book was getting thinner on the right side and thicker on the left, the unread becoming the read, the future becoming the past, and Oren lay beside his wife and listened to the pages turn and thought about sprues and gates and the channels through which hot metal flowed to fill the space where wax had been, and he thought that love was a sprue system, a network of channels that directed the flow of one person toward another, and that the channels had to be designed carefully, at the right angle, at the right diameter, or the flow would falter and the void would remain unfilled, and he had spent twenty-six years designing the sprue system of this marriage, adjusting the angles, widening the channels, and now the metal was flowing and the void was filling and the question was whether the channels would hold, whether the flow would be enough, whether the mold would crack or whether the bronze would find every corner and every curve and every thin place in the wall and fill it, completely, before the metal cooled.

The page turned again.

He closed his eyes.