Black Mountain, NC

Bespoke prototypes, printed and machined to spec.

A small shop for parts that don't exist yet. We print, mill, and turn one-offs and low-volume runs for engineers who need it right, not just fast.

1–250UNIT RUN SIZES
±0.05mmTYPICAL TOLERANCE
3–7 daysUSUAL TURNAROUND
01

Capabilities

Two processes under one roof, so a part can move from a printed proof-of-concept to a machined final version without changing vendors.

ADDITIVE

3D Printing

FDM for functional prototypes and fixtures, resin for detail parts, SLS for tough nylon geometry that would be a pain to mill.

BUILD ENVELOPE
up to 350 × 350 × 400mm
LAYER RESOLUTION
50–300 microns
TYPICAL LEAD TIME
2–4 days
SUBTRACTIVE

CNC Machining

3-axis and 4th-axis milling, light turning work. Aluminum and engineering plastics most days, hardwood for jigs and fixtures.

TRAVEL
up to 600 × 400 × 250mm
TOLERANCE
±0.05mm on critical features
TYPICAL LEAD TIME
3–7 days
FINISHING

Post-Processing

Bead blasting, sanding, tapping and heat-set inserts, basic anodizing through a local partner, light assembly.

HARDWARE
inserts, tapped holes, press fits
SURFACE
bead blast, sand, hand-finish
ADD TIME
1–3 days
ENGINEERING

DFM Review

Every job gets a manufacturability pass before it's quoted — wall thickness, tool access, grain direction, tolerance stack-up.

FILE TYPES
STEP, STL, IGES, DXF
REVIEW TIME
same or next business day
COST
no charge, no obligation
02

Materials on hand

Stocked and ready to cut or print this week. Other materials sourced on request.

Aluminum 6061
CNC
Delrin / POM
CNC
Nylon PA12
SLS
Walnut
CNC
Maple
CNC
ABS / ASA
FDM
PETG
FDM
Rigid Resin
SLA
03

How a part moves through the shop

  1. 01

    Send the model

    Upload a STEP, STL, or IGES file along with your target tolerances, material, and quantity. Sketches and dimensioned photos work too.

  2. 02

    DFM review

    We check tool access, wall thickness, grain direction, and tolerance stack-up, and flag anything that'll cause trouble before it's cut.

  3. 03

    Fixed quote

    You get a price and lead time by process, not a vague range. No surprise charges once the job is confirmed.

  4. 04

    Print or machine

    Your part is built on the process that fits it best, sometimes both — a printed proof first, a machined final second.

  5. 05

    Inspect

    Critical dimensions are checked against your drawing before anything ships. Inspection notes included on request.

  6. 06

    Ship

    Boxed and out the door, with the files and finish notes you'll need for the next revision or the next thousand units.

04

Recent work

A sample of what's come through the shop. Client names withheld — most of this is still unreleased hardware.

Drone gimbal mount

Machined bracket replacing a printed proof-of-concept once the load path was confirmed.

6061-T6Qty 12CNC

Diagnostic device housing

Two-shell resin enclosure for a medical prototype, smooth enough to hand to reviewers.

Rigid resinQty 6SLA

Marine sensor bracket

Corrosion-resistant mount for an outdoor enclosure, bead-blasted for a consistent matte finish.

6061-T6Qty 40CNC

Assembly fixture set

Walnut jigs built for a client's own assembly line, holding tolerance across a full production run.

WalnutQty 4CNC

Robotics enclosure run

Low-volume SLS run standing in for injection molding while the product found its final form.

Nylon PA12Qty 75SLS

Custom camera rig

Machined plates and printed cable guides combined into a single field-ready mount.

DelrinQty 3Mixed

Have a part that needs to exist?

Send the file and the constraints. We'll tell you honestly whether it should be printed, machined, or both — and what it'll cost to find out.

Email your files
EMAILquotes@blackmountain3d.com
PHONE(828) 555-0134
SHOPBlack Mountain, North Carolina
HOURSMon–Fri, 8am–5pm ET