A ball screw 4 by 4 for a garage shop that wants full sheet capacity without moving up to a 4 by 8 machine. Add the cost of a router before comparing prices.
Amazon $4,499 SainSmart $3,599The Genmitsu PROVerXL 4X4 is the better CNC router overall, rated 3.2 to 2.9. The Genmitsu PROVerXL 4X4 leads on work area and motion. The Carbide 3D Shapeoko 5.1 Pro 4x2 wins on warranty. The Carbide 3D Shapeoko 5.1 Pro 4x2 costs $49 less ($3,550 vs $3,599).
For a small shop that wants rails and ballscrews on a 4x2 bed with US support. Add the cost of a router before comparing it with machines that include one.
Carbide 3D $3,550Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Genmitsu PROVerXL 4X4 for work area (2,621 sq in (51.2 x 51.2 in) vs 1,193 sq in (48.7 x 24.5 in)) and motion (linear rails, screw or rack drive, limit switches, closed-loop steppers vs linear rails, screw or rack drive, limit switches).
- Choose the Carbide 3D Shapeoko 5.1 Pro 4x2 for warranty (1.5-year warranty vs 1-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every large CNC router; a clear win is highlighted. How we rank explains each one.
| Factor weight | Genmitsu PROVerXL 4X4 | Carbide 3D Shapeoko 5.1 Pro 4x2 |
|---|---|---|
| Overall rating | 3.2/5 | 2.9/5 |
| Price 25% | 27 $3,599 | 28 $3,550 |
| Work area 15% | 100 2,621 sq in (51.2 x 51.2 in) | 21 1,193 sq in (48.7 x 24.5 in) |
| Spindle 15% | 50 spindle power not published (neutral score used) | 50 spindle power not published (neutral score used) |
| Motion 20% | 100 linear rails, screw or rack drive, limit switches, closed-loop steppers | 85 linear rails, screw or rack drive, limit switches |
| Warranty 25% | 0 1-year warranty | 25 1.5-year warranty |
Specifications
| Genmitsu PROVerXL 4X4 | Carbide 3D Shapeoko 5.1 Pro 4x2 | |
|---|---|---|
| Work area | ||
| Travel (X x Y x Z) | 51.2 x 51.2 x 4.6 in | 48.7 x 24.5 x 6.1 in |
| Area | 2,621 sq in | 1,193 sq in |
| Spindle | ||
| Spindle | 65 mm router mount (router not included) | 65 mm trim router mount (router not included) |
| Motion and control | ||
| Frame | aluminum extrusion with hybrid spoilboard | custom extrusions on a rigid base frame |
| Linear rails | Yes | Yes |
| Drive | Ball screw | Ball screw |
| Closed-loop steppers | Yes | - |
| Limit switches | Yes | Yes |
| Controller | GRBL 1.1h, 32-bit board | Carbide Motion |
| Offline controller | Yes | No |
| Build | ||
| Weight | 330.7 lb | - |
| Warranty | 1 year | 1.5 years |
| Released | 2024-11 | 2025-11 |
