Our Pick: Sienci Labs LongMill MK2 30x30

It scores 76/100 overall versus 68/100, winning 7 out of 9 comparison categories.

Sienci Labs
Spec
WorkBee Z1+
$1200
Price
$1200
762 × 762 mm
Work area
750 × 750 mm
114 mm
Z travel
90 mm
710 W
Spindle power
800 W
26 kg
Weight
28 kg
Steel and aluminum with anti-backlash lead screws
Frame
V-Slot aluminum extrusion with steel plates
LongBoard (GRBL-based, custom)
Controller
GRBL (Duet or BlackBox controller options)
gSender, UGS, CNCjs, Easel
Software
UGS, CNCjs, OpenBuilds CONTROL, Fusion 360

Specs are evenly split between both machines. Both are similarly priced. Sienci Labs LongMill MK2 30x30 leads by 8 points overall — here’s where those points come from:

Benchmark Scores

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

76
Sienci Labs

Overall

68
WorkBee Z1+
72 Value 65
58 Rigidity 52
62 Precision 55
85 Ease of use 55
60 Capability 58

Sienci Labs LongMill MK2 30x30

Pros

  • Excellent build quality with steel and aluminum construction
  • Anti-backlash lead screws on all axes
  • Outstanding documentation and video tutorials
  • gSender software is purpose-built and beginner-friendly
  • Strong community and Canadian customer support

Cons

  • Router not included adds to total cost
  • Assembly takes 4-6 hours
  • Lead screws are slower than belt drives for rapids
  • Dust shoe is an optional extra

WorkBee Z1+ CNC Router

Pros

  • Solid V-Slot aluminum extrusion frame design
  • Optional 800W spindle provides genuine cutting power
  • Highly customizable size and component options
  • Based on proven OpenBuilds design ecosystem
  • Good selection of optional accessories

Cons

  • Ships from UK -- shipping costs and delays for US buyers
  • Assembly is more involved than plug-and-play alternatives
  • V-wheel motion system requires periodic adjustment
  • Price varies significantly based on configuration

Verdict

Sienci Labs LongMill MK2 30x30 wins this comparison with 7 categories to 2.

It scores 76/100 overall versus 68/100, winning 7 out of 9 comparison categories.

Where to Buy

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Frequently Asked Questions

What is the difference between Sienci Labs LongMill MK2 30x30 and WorkBee Z1+ CNC Router?

The Sienci Labs LongMill MK2 30x30 ($1200) features a 710W spindle with a 762×762mm work area and a Steel and aluminum with anti-backlash lead screws frame. The WorkBee Z1+ CNC Router ($1200) features a 800W spindle with a 750×750mm work area and a V-Slot aluminum extrusion with steel plates frame. Overall, the Sienci Labs LongMill MK2 30x30 wins more comparison categories.

Which is better value for money — Sienci Labs LongMill MK2 30x30 or WorkBee Z1+ CNC Router?

Both machines are identically priced at $1200. Our value scores rate the Sienci Labs LongMill MK2 30x30 higher at 72/100.

Which router is easier to set up and use?

Based on our ease-of-use benchmarks, the Sienci Labs LongMill MK2 30x30 scores higher (85/100 vs 55/100). Both support gSender, UGS, CNCjs among other software options.

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