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Open Source PrintNC

Open Source PrintNC

Best price now

$415.00at AmazonObserved Nov 3, 2026, 8:47 AM

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Our take on the Open Source PrintNC

The PrintNC is an open-source CNC router design built from hollow structural section (HSS) steel tubing rather than aluminum extrusion or plate. The frame uses three X tubes, two Y tubes and a single X gantry tube, with 3 mm, 4 mm or 5 mm wall thickness in metric or 2" x 3" and 2" x 4" imperial sizes. It is sold as a kit of plans and parts rather than a finished machine, so buyers source steel locally and print or buy the remaining components. The best new price is $415 at Amazon as of November 3, 2026, the only new listing tracked.

Best forMakers who want a rigid steel-frame router for cutting wood, plastic and light aBuilders comfortable drilling, tapping and assembling a machine from plans
Hobbyists who want a large work area without paying turnkey CNC prices
People who prefer an open, modifiable design with a community behind it
Pros
  • Steel tube frame is far stiffer than typical aluminum-extrusion hobby routers
  • Open-source design: free plans, documented BOM and active community mods
  • Wall thickness options (3, 4 or 5 mm) let you trade cost against rigidity
  • Large work envelope for the money compared with turnkey machines
  • Standard HSS tubing is cheap and available at local steel suppliers
Cons
  • Not a finished machine: you must source steel, cut it and assemble everything
  • Requires drilling and tapping steel accurately, which needs real tools and patience
  • No manufacturer support; troubleshooting depends on community forums
  • Total build cost runs well past the kit price once steel, motion parts and spindle are added
  • Heavy and hard to move once assembled

Open Source PrintNC prices at every store

  • AmazonNew

    Availability unknown

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    $415.00Free shippingObserved Nov 3, 2026, 8:47 AM
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Open Source PrintNC price history

Lowest price we've seen: $415.00 on Nov 3 at Amazon. Tracked across 1 store since Nov 3.

What reviewers say

Owners of built PrintNC machines generally report excellent rigidity and cut quality for the price, and credit the open plans and community for getting them through the build. The common complaint is that assembly is a serious project, not a weekend kit.

Pros
  • Very stiff frame that handles aluminum and hardwoods without chatter
  • Clear open-source plans and helpful community support
  • Strong value versus commercial routers of similar size
Cons
  • Build takes significant time, tools and skill
  • Fit and finish depend entirely on the builder's work
  • Documentation assumes some machining and fabrication experience

Specifications

Frame material
hollow structural section (HSS) steel tubingSource
Tube thickness options
3 mm, 4 mm or 5 mmSource
Imperial tube sizes
2" x 3", 2" x 4"Source
Imperial thickness options
0.12 or 0.178Source
Steel type
Hot Rolled Steel Tubing (A513 preferable)Source
Tube tolerance
+/- 10 %Source
X tubes count
3 of themSource
Y steel tubes count
2 tubesSource
Y rollers count
2 small tubesSource
X gantry count
one tubeSource
X roller count
one small tubeSource

Questions and answers

Is the PrintNC worth it compared with a turnkey CNC?
If you want a stiff machine at low cost and are willing to build it, yes. If you want to unbox and cut the same day, a turnkey router is the better buy.
What else do I need beyond this kit?
Expect to source steel tubing, linear rails, ball screws or rack-and-pinion, steppers, a controller, spindle or router, and fasteners. The open BOM lists everything.
Which tube thickness should I choose?
5 mm walls give the most rigidity, 3 mm is the cheapest and lightest. Most builders pick 4 mm as the balance for a hobby machine.
Can it cut aluminum?
Yes, with a rigid build and a suitable spindle. It is a router, so expect light passes in aluminum rather than milling-machine speeds.
How big is the work area?
Size depends on the tube lengths you cut, so the design scales. Most builds land in the 1,000 to 1,500 mm range per axis.
When is the price lowest?
The kit price tracks component costs rather than seasonal sales. Compare the $415 Amazon listing as of November 3, 2026 against sourcing the same parts individually.
Where is the Open Source PrintNC cheapest?
At Amazon, for $415.00, as of our latest check.

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