BP Mods

The signature — Bruce’s design order runs opposite to how the objects are usually read. The spring and the ball come first; the feel is settled before the structure exists. Only once the click package behaves correctly does the shell get designed around it. The object, in his sequence, is casing for a decision already made.

The Price Tag shows what that order produces. When it arrived, the pivot-fan slider was a magnetic form: two layers, one pivot, action supplied by magnets. Bruce built it mechanical. Same two-layer architecture, one pivot point, the top layer swept sideways with the thumb the way you fan playing cards — but the stops come from a spring-loaded ball seating into machined detents, not from magnetic pull.

The novelty was not the form. It was the action inside it.

Origin — Bruce spent seventeen years in professional MMA. The studio exists because a business partner was convinced his design ability was being wasted, and because the first prototype — the Price Tag — landed harder than he expected. He had no strong interest in the category until he watched people respond to that object. The interest arrived with the evidence.

He writes publicly as 胡子 — Hú Zi, pronounced roughly hoo dzuh, literally “beard”, used in Chinese as an affectionate nickname for a bearded man.

The brand name is carried over from his vape-hardware business: B for Bruce, P for Presents. What actually carried over was more important than the letters — the fabrication know-how, the supplier relationships, and the batch-production infrastructure of a mature hardware business. The line today is CNC-machined with production under the studio’s own control. BP Mods did not have to learn how to make a thing many times over. It had to learn how to make a thing many times over so that all of them feel the same.

Position — nearly everything in this hobby argues for scarcity as the default proof of seriousness: limited runs, numbered editions, objects gone before you have decided whether you want one. BP Mods runs the reverse bet, and the bet has two halves. The mainline objects sit on real fabrication infrastructure and are replenished, so people can actually get one. And every one of them is built to be opened, re-tracked and re-sprung by the person who owns it. Access on two axes at once: enough units that people can get one, and enough adjustability that the one they get can be made theirs.

The most common criticism follows directly. Because the objects stay available and get restocked, they hold their value less aggressively on the secondary market — and in a hobby trained on scarcity, that gets read as a verdict on the object. Bruce rejects the premise outright: availability softening the aftermarket is a supply effect, not a quality signal, and he would rather build value into the production than manufacture scarcity to flatter it. The position pays an unexpected dividend. Clones have never seriously troubled BP Mods, and his explanation is structural — when the authentic object is easy to get, the copy has no reason to exist. Where other studios fight replicas with enforcement, he starves them with access.

The strongest evidence that he means this is not a sentence he said. It is a file he published. In late 2024 BP Mods released the Price Tag’s plate data, and independent makers began building to it — plates in resin, lignum vitae, mother-of-pearl, brass, copper, silver, leather, mixed-metal inlay. The studio showcased them while explicitly disclaiming any part in their sale, pricing or quality, then carried the same plate interface across the Crystal and the Nine Palaces so a plate bought for one body would fit the next. Publishing the interface hands part of the object’s visual identity to people the maker does not control, and makes the surface of his own product a surface others compete on. He did it anyway, because the interface is the point.

Mechanism — the Nine Palaces is where the second half of the thesis gets built into the metal. The name is literal: nine spring holes laid out in a three-by-three grid. Externally removable limit screws thread into that grid, and where you place them sets two things at once — how far the slide travels, and which track the mechanism rides.

The body carries three machined tracks: segmented at nine detents, dense at fifteen, ultra-dense at twenty-nine. Four travel arrangements combine with those three tracks to give twelve basic modes, and a separate set of recommended spring-and-ball packages runs from soft to hard across them. Bruce ships the object in one configuration, the smooth standard. The Nine Palaces is built to stop being his the moment its owner opens it.

Look at the tracks and the design language is legible without explanation. Three rows of detents, cut into the same block, at three different spacings. The object is not offering three settings. It is offering three instruments, and the grid decides which one you are playing. The tuning behind that is not casual: close to a hundred prototypes, and iteration at hundredths of a millimetre on track depth before the tracks were signed off. Every track in the line went through hundreds of physical samples — depth and spacing changed, cut, felt, changed again — because the feel cannot be derived from the drawing. It has to be found in the hand.

Material — ask Bruce what a finished object feels like and he answers in two channels at once: motion and sound. Smooth travel, and a voice — the bright ding of a ball finding its seat, distinct enough to feel as much as hear.

Material, for him, is primarily a way of tuning that voice. A light material sings; the same spring and ball assembly rings higher and livelier. A heavy material drops the pitch and smooths the shake of the spring-ball action, and the event blurs toward buttery. Titanium he describes as dry and internal — the click happens somewhere inside the object rather than out loud. His own favourite is 304 stainless: stable, predictable, and to his hand the best-feeling of the set.

Because feel is personal, one factory setting was never going to fit every hand, and the line is built around that fact. The standard configuration is the smooth one. Players who want resistance — slow pushers, in his phrase — swap in accessory tracks and springs rather than hunting for a different object. Some runs even split at the factory, part of the batch configured fast and part configured slow. Where most makers tune one feel and defend it, Bruce ships a starting point and hands over the screws.

Process — Bruce came to fidgets from designing vape hardware and assumed the push card would be the easy part. It was not. At pocket scale, a small shift in a single mid-tolerance changes the entire feeling in the hand. The detents read differently. The travel reads differently. The object is the same drawing and a different experience. And tolerance is not one variable: the same geometry behaves differently sandblasted than polished, differently with POM balls than PTFE. Some of those interactions only surface in testing — or worse, between batches.

One detail from the Nine Palaces makes the point. The black PEEK rail at the centre of the object cannot simply be machined and dropped into its groove. It is hand-finished and polished until the tolerances align, on every unit that goes out. A hand operation sitting inside a batch operation, repeated as many times as the batch is large. BP Mods is a CNC operation, and it is worth being precise about what that means: the machines cut the parts, they do not finish them. Rails are polished and trial-fitted to bodies. Tracks are finished by hand before cleaning. Colour is sorted and rejected after surface treatment. Bruce puts himself on final inspection for the tolerance-sensitive batches.

Release runs through two gates. First the internal team tests until nothing is left on their list. Then the object goes to a closed group of ten to fifteen experienced players drawn from different corners of the EDC scene. Their verdict is sorted by a simple rule: if six approve and four dissent on taste, taste gets judged — there may be room to adjust, there may not. If anyone finds a real defect, it gets solved. No release around it.

And still the batch problem finds him. The Nine Palaces, by his own account, did not hold identical across production batches — the same design, arriving with a different feel. It is worth noticing which object that happened to: the most adjustable body in the line, nine holes and three tracks and selectable springs, is also the one with the most interfaces for tolerance to hide in. Asked about it he does not perform confidence — why can I not make a product that does not have problems? — frustrated that after designing for ease of assembly, fewer failure points and the market’s convenience, each batch still finds a new way to surprise him. That frustration is the sound of a maker holding a full production run to a standard the category usually reserves for a handful of pieces.

Architecture — the Pioneer is the answer, and it is architectural rather than procedural. BP Mods states the diagnosis in its own launch document with unusual bluntness: as long as the structure is a rail running in a slot, tolerances stack, and play is unsolvable. So the Pioneer does not have a rail. Magnetic attraction clamps POM balance balls between the two halves, killing the play at its source, and those balls roll as the object is pushed. The springs are embedded across the depth of both bodies rather than housed in one — the spring hole protrudes from the lower body while the ball-track face recesses into the upper — which folds a full spring’s length into the combined thickness of the two halves and lands the whole object at 7.9 mm.

Then he designs the disassembly. On other magnetic sliders, opening the object scatters the balance balls across the desk. The Pioneer screws its inner core to the upper cover, trapping the balls between core and body: turn it over, open it, and nothing escapes. Five track cores exist, from segmented through ultra-dense to a long-slide five-ball with a horseshoe sound, and swapping one means removing two screws. That number is not incidental. Reducing the steps between the owner and the mechanism is, in Bruce’s telling, one of the most deliberate and least visible parts of the work.

With no rail tolerance left to control, the batch problem recedes: BP Mods reports that Pioneer bodies come off the line so consistently that the difference between batches is close to imperceptible. The tolerance was not managed harder. The surface it was hiding in was removed.

The Pioneer also publishes its own faults, printed in the launch material rather than left for a customer to find. Out of the box it is almost frictionless — PTFE pads are supplied to add damping, at the cost of a duller sound. The architecture sits too close to its limit to accept deformable plastics like PEI or PEEK, and Bruce says so instead of shipping one that flexes. And the magnetic structure has a magnetic structure’s weakness: press hard on the pusher head at full travel, or drop it, and the halves can part. The balance balls stay locked; the central sound ball will not. The instruction is printed plainly — do not force the end.

A month after release, field use turned up a failure mode the testing had not: the balance balls could bind under certain hand motions. Four short grooves became two long continuous ones, black POM balls became white after supply testing showed tighter dimensional consistency, and the fix went out as a retrofit to the people who had already bought one. The same instinct had shown up earlier on the Nine Palaces, when dealers reportedly suggested selling owners a whole new version and BP Mods sold them half a body board and a fitted rail instead. Both times the object in the customer’s hand was treated as a thing to be upgraded rather than superseded.