Image: Sainsmart
Sainsmart Genmitsu PROVerXL 4x4
Sainsmart
Best for: Sign makers and furniture builders who need a 4x4 bed with ball screws and want to choose their own spindle
Typical starting price
$3,999Editorial baseline for this machine
Overall score
Best current buying path
Where to buy
SainSmart: $3,999 · checked Oct 2
- Shipping varies by retailer
- Check manufacturer site for availability
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Quick verdict
The PROVerXL 4x4 is the big brother of the PROVerXL 2x2: the same HG20 and HG15 rails, 20mm ball screws, closed-loop NEMA23 motors and 32-bit GRBL controller, stretched to 1300 x 1300 x 118mm of travel at 150kg net. That bed takes a full 4 x 4 ft panel, which is the main reason to buy it. The $3999 machine-only price does not include a spindle or router, so the real cost is higher before you cut anything. A 1300mm aluminium gantry also asks more of the frame than the 2x2 does, so expect to run lighter cuts on the long axis. It is a capable large-format GRBL machine, priced against established 4x4 machines with bigger communities behind them.
Who this fits best
Sign makers and furniture builders who need a 4x4 bed with ball screws and want to choose their own spindle
Buy this if
Sign makers and furniture builders who need a 4x4 bed with ball screws and want to choose their own spindle. 1300 x 1300mm bed takes a full 4 x 4 ft panel.
Skip this if
No spindle or router included at $3999, and 1300mm gantry on an aluminium extrusion X axis is long for a trim-router class machine.
What else you still need
A spindle is not included, so add the Genmitsu 710W router or a 1.5-2.2kW water-cooled spindle with VFD. You also need a level, rigid table around 1.9 x 1.85m that carries 150kg, a proper dust collector, end mills, and CAM software (VCarve Desktop bundle adds $300).
Material reality check
Plywood, MDF, hardwood panels, signboard and plastics in full 4 x 4 ft sizes are what this machine is for. Aluminium and brass are possible on the ball-screw drive, but with a 1300mm extrusion gantry and a trim router you should plan on light passes and keep heavy metal work near the gantry ends.
Better alternative if...
you want a 4x4 from a maker with a large North American user base and an established spindle upgrade path, compare the Sienci AltMill 4x4. See Sienci AltMill MK2 4x4
Where it wins
- 1300 x 1300mm bed takes a full 4 x 4 ft panel
- Ball screws and profile linear rails on every axis, closed-loop NEMA23 motors
- Optional second Z axis for running two routers or a router and a laser
- Hybrid spoilboard, Wi-Fi module, Z-probe, clamps and dust shoe included
- Uses the same well-documented GRBL software stack as smaller Genmitsu machines
Where it falls short
- No spindle or router included at $3999
- 1300mm gantry on an aluminium extrusion X axis is long for a trim-router class machine
- Max speed of 5000 mm/min makes full-sheet jobs slow
- Needs roughly 1.9 x 1.85m of floor or table space and a frame that can carry 150kg
- Second Z axis cuts usable X travel to 600mm
Specifications
1300 × 1300 mm
16900 cm²
710W
No spindle in the box: 65mm mount for the optional Genmitsu 710W trim router (ER11), 1.5-2.2kW water-cooled spindle also offered
32-bit GRBL 1.1h controller with Wi-Fi module, NEMA23 closed-loop steppers, inductive and hard limit switches
150 kg
$3,999
premium
Full specification table
Relative to database
Benchmark Scores
Overall Score
Composite across 5 dimensions
Community Sentiment
We have not summarised owner feedback for the Sainsmart Genmitsu PROVerXL 4x4 yet, so this section is intentionally left without claims. Check the sources for current owner discussions.
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