Image: Sienci Labs
Sienci Labs LongMill MK3 48x30
Sienci Labs
Best for: Woodworkers who want a large, accurate benchtop CNC for signs and furniture parts without paying for a full-sheet machine
Typical starting price
$1,800Editorial baseline for this machine
Overall score
Best current buying path
Where to buy
Prices change often: compare the stores below
- Shipping varies by retailer
- Check manufacturer site for availability
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Quick verdict
The 48x30 LongMill MK3 has a 49 x 32 inch cutting area, 15mm profile rails, closed-loop NEMA23 motors and a grblHAL controller. Its lead-screw drives and optional router suit signs, woodwork and furniture parts, with light aluminum work possible using suitable tooling. Sienci supports vertical installation where floor space is limited. A router, workholding and extraction still need budgeting. Allow for the full 60 x 45 inch machine footprint on a bench; the smaller cutting-area dimensions do not describe the table it needs.
Who this fits best
Woodworkers who want a large, accurate benchtop CNC for signs and furniture parts without paying for a full-sheet machine
Buy this if
Woodworkers who want a large, accurate benchtop CNC for signs and furniture parts without paying for a full-sheet machine. 49 x 32 inch cutting area handles signs, cabinet parts and long boards.
Skip this if
Router not included, and the longer X axis gives up some stiffness compared with the 30x30.
What else you still need
A compatible trim router or AutoSpin T1, a rigid bench supporting the 60 x 45 inch machine footprint or a suitable vertical mount, a wasteboard, dust collection and workholding. Allow extra room for cables and access.
Material reality check
Wood, sheet goods and plastics are the main applications. Light aluminum work is possible with appropriate cutters, workholding and conservative settings; spindle choice matters.
Better alternative if...
you need more rigidity for aluminium or production work. See Sienci Labs AltMill MK2 2x4
Where it wins
- 49 x 32 inch cutting area handles signs, cabinet parts and long boards
- Linear rails and closed-loop motors on all axes at well under $2,000
- Pre-assembled modules, with the maker estimating around two hours of setup
- Can be mounted vertically, which saves a lot of floor space
- Excellent free software and strong Canadian support
Where it falls short
- Router not included
- An 80mm spindle and matching dust shoe reduce the usable cutting area
- Lead screws rather than ball screws
- Needs a large, flat table you build or buy separately
- Roughly six weeks of lead time at launch
Specifications
1245 × 813 mm
10122 cm²
710W
65mm trim router mount, router not included (80mm spindles also fit)
SLB-LITE running grblHAL, NEMA 23 closed-loop steppers (1.2 Nm)
36 kg
$1,800
mid range
Full specification table
Relative to database
Benchmark Scores
Overall Score
Composite across 5 dimensions
Community Sentiment
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