Our Pick: Sienci Labs LongMill MK2 48x30

It scores 74/100 overall versus 64/100, winning 7 out of 9 comparison categories.

Sienci Labs
Spec
Inventables X-Carve
$1400
Price
$1400
1219 × 762 mm
Work area
750 × 750 mm
114 mm
Z travel
65 mm
710 W
Spindle power
900 W
32 kg
Weight
28 kg
Steel and aluminum with anti-backlash lead screws
Frame
Aluminum extrusion with steel gantry plates
LongBoard (GRBL-based, custom)
Controller
X-Controller (GRBL-based)
gSender, UGS, CNCjs, Easel
Software
Easel, UGS, CNCjs, Fusion 360

Sienci Labs LongMill MK2 48x30 wins 3 of 4 spec categories. Both are similarly priced. Sienci Labs LongMill MK2 48x30 leads by 10 points overall — here’s where those points come from:

Benchmark Scores

Side-by-side score comparison across all five benchmark dimensions.

74
Sienci Labs

Overall

64
Inventables X-Carve
75 Value 50
50 Rigidity 42
58 Precision 48
82 Ease of use 92
62 Capability 52

Sienci Labs LongMill MK2 48x30

Pros

  • Large 48x30 inch work area handles full-width projects
  • Same excellent documentation as the 30x30 model
  • Anti-backlash lead screws on all axes
  • gSender software is beginner-friendly and well-maintained
  • Responsive Canadian customer support

Cons

  • Router not included adds to total cost
  • Larger span reduces rigidity compared to 30x30
  • Requires significant workspace footprint
  • Heavier and more complex assembly
  • Lead screw speed limits rapids on longer axis

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  • V-wheel motion system is outdated compared to linear rail competitors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

Sienci Labs LongMill MK2 48x30 wins this comparison with 7 categories to 2.

It scores 74/100 overall versus 64/100, winning 7 out of 9 comparison categories.

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Frequently Asked Questions

What is the difference between Sienci Labs LongMill MK2 48x30 and Inventables X-Carve?

The Sienci Labs LongMill MK2 48x30 ($1400) features a 710W spindle with a 1219×762mm 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. Overall, the Sienci Labs LongMill MK2 48x30 wins more comparison categories.

Which is better value for money — Sienci Labs LongMill MK2 48x30 or Inventables X-Carve?

Both machines are identically priced at $1400. Our value scores rate the Sienci Labs LongMill MK2 48x30 higher at 75/100.

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 82/100). Both support gSender, UGS, CNCjs among other software options.

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