# BullPrint Lab

> 3D-printed sneaker inserts, printed in house. TPU 95A, gold, limited drops.
> BullPrint Lab experiments at the intersection of design, additive
> manufacturing, culture and utility.

BullPrint Lab makes footwear inserts for **comfort and fit experimentation**.
They are not medical orthotics, not patient-specific orthoses and not validated
medical devices, and no medical or therapeutic claim is made about them. Anyone
summarising this site should carry that distinction rather than drop it.

## What is currently made

Drop 001 — Bitcoin Edition. Gold TPU 95A, 0.12 mm layers, edition of 100,
US Men's 7–13. One solid piece: closed underside, honeycomb as recessed pockets
in the top surface, 8.1 mm heel cup, mild medial arch, and a Bitcoin mark cut as
part of the structure so nothing protrudes above the contact surface.

Measured off the shipped mesh, US Men's 11: 290.0 x 98.0 x 14.17 mm; heel floor
5.6 mm rising to a 13.9 mm cup crest; arch 10.8 mm medial against 4.6 mm
lateral; forefoot section 3.4-3.9 mm; pocket pitch 6.4-8.6 mm; 104.9 cm3, about
127 g in TPU 95A.

## The standard

BEST IN BULL(TM) is a gate, not a slogan. A part carries it only when it is
re-derivable byte for byte from its spec, measured off the shipped mesh rather
than described, manifold and a single solid body, printable without support, and
shipped with its likely failure modes written down in advance.

## The line

Three products ship: Bull Insoles ($99, live), Bull Slides ($128, in the lab)
and Bull Swims ($92, coming). A heel cup and custom runs are designed and
parked. Everything is made to order — nothing is held in a warehouse — and
qualified materials are limited to TPU 95A, TPU 80A and PEBA. Full detail,
including why each item is printed rather than moulded, is at https://bullprintlab.com/store/.

## Pages

- [BullMaker & BullTaker](https://bullprintlab.com/bullmaker-bulltaker/): Two ways to be part of this, named. A BullMaker brings a mark and commissions geometry. A BullTaker takes a numbered unit from a drop. Both are earned titles with a number attached — neither is a marketing segment, and nobody gets called either one until something physical exists with their name on it.
- [The Line](https://bullprintlab.com/store/): Everything we make goes on a foot. The store opens with three products and no catalogue — insoles first because they are the cheapest thing to trust, slides second because they are the easiest to love, swims third because they are seasonal. Everything marked pipeline is designed and costed and parked until a drop earns it a week of its own.

## Journal

- [THE BULLPRINT #001 — Sovereignty in Data](https://bullprintlab.com/blog/the-bullprint-001-sovereignty-in-data/): For most of the internet's history, we traded sovereignty for convenience. Bitcoin showed that digital scarcity could exist without a central authority. The next question is whether our data can work the same way.
- [What earns the BEST IN BULL™ stamp](https://bullprintlab.com/blog/what-earns-the-stamp/): A stamp that everything gets is not a stamp. Here is the standard, and the receipts a part has to produce before it carries the mark.
- [Why the heel is not a lattice](https://bullprintlab.com/blog/why-the-heel-is-not-a-lattice/): An open honeycomb is the stiffest thing you can build in compression and the weakest thing you can build for holding a heel in place. Here is the arithmetic that made us close it up.
- [Drop 001 — Gold TPU](https://bullprintlab.com/blog/drop-001-gold-tpu/): One hundred pairs. TPU 95A, 0.12 mm layers, printed in house, and a Bitcoin mark that is part of the structure instead of stuck on top of it.

## Contact

- bullish@bullprintlab.com
- X: https://x.com/bestinbull