Den Lillya

Contract engineering · Manufacturing · Automation

From concept
to production.

Den Lillya is contract mechanical engineering for people who make things. Automation that runs, machining that holds tolerance, processes that scale — whatever manufacturing problem you're up against, I've probably fixed something like it before.

Start a conversation See capabilities
Fully automated warehouse designed & implemented on-site for a global biopharmaceutical manufacturer
20 tons per week 5-axis machining line built & led as Director of Engineering, ISO 9001
U.S. Patent 11,619,482 sole inventor
A decade in the field steel, aerospace, and biopharmaceutical industries

How a part becomes a product

One engineer, the whole pipeline.

Most problems get expensive at the hand-offs — designer to machinist, prototype to production, mechanical to controls. I work across the full sequence, so nothing gets lost in translation.

  1. 01

    Design

    Mechanical design with manufacturability built in from the first sketch. Requirements and spec writing, tolerance analysis, design reviews, and 3D scanning to pull existing parts back into CAD.

    • SolidWorks
    • AutoCAD
    • DFM
    • Reverse engineering
  2. 02

    Prototype

    Physical parts, fast, from an in-house shop: CNC routing, FDM printing up to carbon-fiber nylons, MIG-welded steel frames, and custom machines for one-off jobs.

    • CNC routing
    • 3D printing
    • MIG welding
    • Custom machines
  3. 03

    Produce

    CAM programming from 3-axis routers to 5-axis aerospace parts, high-tolerance work in an ISO 9001 environment, fixturing and workholding, machinist training, and manufacturing lines optimized for throughput, quality, and cost.

    • 5-axis CNC
    • Mastercam
    • Esprit
    • ISO 9001
    • Tight tolerance
  4. 04

    Automate

    Industrial automation end to end: Rockwell PLC programming, robotics and mechatronics, control panel design, warehouse automation, and validation under cGMP — plus custom software when nothing off the shelf fits.

    • PLC / RSLogix
    • Robotics
    • cGMP validation
    • Custom software

Software from the shop

Tools I built, free to use.

Contract engineering doesn't stop at hardware. When a job needs software that doesn't exist, I write it — these run in your browser, no install, no account.

STL2Gcode

Browser-based CAM. Drop in a 3D model, set up stock and tools, and generate G-code for a 3-axis CNC router — with two-sided machining, 3D-printable workholding fixtures, and toolpath simulation.

Open STL2Gcode

Stuck on something?

A line that won't hit rate, a part that won't hold tolerance, an automation project that needs someone who's done it before — send a short note about the problem and I'll tell you honestly whether I'm the right person for it.

[email protected]