Inventables X-Carve wins 3 of 5 spec categories. Sienci LongMill MK2 12x12 costs $600 less. The overall scores are virtually tied — the differences are in the details below.
Benchmark Scores
Side-by-side score comparison across all five benchmark dimensions.
Overall
Sienci LongMill MK2 12x12
Pros
- Excellent documentation and beginner-friendly setup from Sienci
- Anti-backlash ACME lead screws on all axes
- gSender is a polished, purpose-built CNC sender
- Active community forums with responsive manufacturer support
- Generous Z-axis travel of 114mm
Cons
- Small 12x12 inch work area for a machine at this price
- Router not included adds $100+ to total cost
- Larger LongMill models offer better value per square inch
- V-wheel motion system rather than linear rails
- Lead screws are slower than ball screws
Inventables X-Carve
Pros
- Easel software is the most beginner-friendly CAD/CAM available
- Router included for out-of-box cutting
- Large 750x750mm work area
- Massive community with years of projects and tutorials
- Good selection of add-ons and accessories
Cons
- V-wheel motion system is outdated compared to linear rail competitors
- Rigidity is below average for the price
- Belt drive limits precision
- Easel Pro requires a subscription for advanced features
Verdict
These routers are evenly matched with 5 wins each. The right choice depends on your specific priorities — compare individual specs and scores above to decide.
Where to Buy
Price-first merchant links with the clearest reason to click first.
Sienci LongMill MK2 12x12
$800Inventables X-Carve
$1400As an Amazon Associate I earn from qualifying purchases. Affiliate links may earn a commission at no extra cost.
Frequently Asked Questions
What is the difference between Sienci LongMill MK2 12x12 and Inventables X-Carve?
The Sienci LongMill MK2 12x12 ($800) features a 710W spindle with a 305×305mm work area and a Steel and aluminum with anti-backlash lead screws frame. The Inventables X-Carve ($1400) features a 900W spindle with a 750×750mm work area and a Aluminum extrusion with steel gantry plates frame. Both machines are evenly matched overall.
Which is better value for money — Sienci LongMill MK2 12x12 or Inventables X-Carve?
The Sienci LongMill MK2 12x12 is $600 cheaper at $800 vs $1400. Our value scores rate the Sienci LongMill MK2 12x12 higher at 58/100.
Which router is easier to set up and use?
Based on our ease-of-use benchmarks, the Inventables X-Carve scores higher (92/100 vs 88/100). Both support gSender, UGS, CNCjs among other software options.