Huaqiangbei, Shenzhen · Umeå & Stockholm, Sweden

Your hardware and digital twin, delivered.

I operate on the ground in Huaqiangbei, Shenzhen with a 57-printer farm, vetted CNC, molding and PCBA partners, and our Twinton pre-cut simulation engine. We take European and US hardware teams from CAD to verified pilot batches in weeks instead of quarters.

leif@rydenfalk.com · Send a STEP file or BOM for a 24-hour pre-cut simulation and Shenzhen batch quote.

Commercial Engagements

Three ways to work together

14-Day DFM, Pre-Cut Twin & Prototype Sprint	USD 4,900 fixed (credited 100% toward a Turnkey Pilot Batch within 30 days). We simulate your STEP/Gerber files in Twinton to catch tolerance collisions before machining, secure 10 vetted Shenzhen factory quotes, and ship 5 fitted, inspected physical prototypes to your bench.
Turnkey Pilot Batch + Live Twinton Twin	USD 25,000 fixed per batch (50–250 custom CNC, sheet-metal, injection-molded + PCBA assemblies; 50% deposit, 50% on verified pre-shipment QC twin). Includes pre-cut simulation, on-site Huaqiangbei inspection by our team, and a live digital twin tracking tolerances and production status.
Dedicated Shenzhen Engineering & Twin Pod	USD 8,500 / month (billed quarterly at USD 25,500). Your dedicated on-the-ground engineering, DFM, sourcing and quality-control team in Huaqiangbei with 72-hour prototype turns and a live Twinton supply-chain twin.

Capabilities

End-to-end execution under one roof

Pre-Cut CNC & Line Simulation	Every CNC toolpath, assembly tolerance and production line bottleneck is simulated in Twinton before metal is cut.
PCBs, Actuators & Embedded	Multi-layer KiCad schematic and PCB layout, high-speed embedded controllers, motor/actuator drivers, and rapid PCBA bring-up in Huaqiangbei.
Machining, Molding & Print Farms	Direct routing across 57 3D printers in 7 Shenzhen farms plus vetted 5-axis CNC, anodising, sheet-metal and injection-molding factories we inspect in person.
Production Software & Rust Systems	Backed by a track record that includes architecting and selling the 500,000+ line Rust enterprise platform Rheo to Redpine and building the 1.48M msg/s Cell RPC substrate.

Proof

From our Shenzhen workbench and factory floor

Two CNC cuts side by side at 1x and 8x feed — **CNC verified before the cut**Same G-code at two feed rates. 1x: 10:30, 0 lost steps. 8x: 5:15, scrap caught in simulation first.

Digital twin of a factory floor — **Twinton live twin**Every station, queue and part lot tracked in a 3D browser twin your engineering team can inspect from Europe or the US.

The workshop in Huaqiangbei with benches and parts shelves — **Room 405, Black Ark, Huaqiangbei**Five minutes from SEG market. Missing components and factory checks happen the same afternoon.

Rendered controller board — **Custom PCBA & Embedded Hardware**DRC-clean multi-layer boards designed, assembled and brought up on the bench in Shenzhen.

Huebot parts and painted shell on the workbench — **15-DOF Robotics Supply Chain**Servos, bearings, custom harnesses, PCBs and structural housings sourced and assembled end-to-end.

A 3D printer in the Shenzhen print farm — **57-Printer Shenzhen Farm**Overnight functional prototypes and fixtures watched on camera and fitted before tooling commit.