Image: Sienci Labs
Sienci Labs LongMill MK2 48x30
Sienci Labs
Best for: Woodworkers who need extended X-axis length for wider projects like table tops and long signs
Typical starting price
$1,400Editorial 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 LongMill MK2 48x30 extends the work area to 1219x762mm (48x30 inches), allowing projects up to 4 feet wide. It shares the same excellent documentation, gSender software, and anti-backlash lead screw design as the 30x30 model. The extended X-axis does introduce some flex at the extremes, so keeping cuts centered produces the best results. At $1400, it offers one of the largest work areas available under $1500 from a manufacturer known for quality support.
Who this fits best
Woodworkers who need extended X-axis length for wider projects like table tops and long signs
Where it wins
- 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
Where it falls short
- 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
Specifications
1219 × 762 mm
9289 cm²
710W
Router mount (Makita RT0701C or DeWalt DWP611, not included)
32 kg
$1,400
mid range
Full specification table
Relative to database
Benchmark Scores
Overall Score
Composite across 5 dimensions
Community Sentiment
The 48x30 is recommended for woodworkers who specifically need the extended width and are willing to accept some rigidity trade-offs. Sienci's documentation and gSender software remain the standout features that differentiate it from similarly-sized competitors.
What owners love
- Same outstanding documentation and resources as the 30x30 model
- gSender is praised as the best CNC sender software available for GRBL machines
- Sienci customer support remains excellent even as the company grows
- 48-inch X axis handles full-width table tops and long sign projects
Common complaints
- Extended X axis introduces noticeable flex at the extremes
- Lead screw rapids are slow across the longer travel distances
- Router not included adds $100-130 to the total cost
- Takes up considerable shop space and needs a purpose-built table
Typical upgrades
- Makita RT0701C router (most popular, not included)
- Dust shoe for chip evacuation
- Inductive limit switches for reliable homing
- Stiffening modifications to reduce gantry flex on the extended axis
Community sentiment is aggregated from forums, Reddit, Discord, and manufacturer communities. Individual experiences may vary.