Sienci LongMill MK3 30x30
#5 in LargeFull review
For a hobbyist who wants a rigid rail machine with a 32 by 32 inch bed for well under $2,000, and already has or will buy a trim router.
Sienci Labs $1,400$1,400
The Sienci LongMill MK3 30x30 rates 3.4 among large CNC routers; the Genmitsu PROVerXL 2X2 rates 3.0 among midsize ones. The Sienci LongMill MK3 30x30 costs $1,499 less ($1,400 vs $2,899).
Genmitsu PROVerXL 2X2
#2 in MidsizeFull review
A ball screw and linear rail 2 by 2 ft machine for makers and small sign shops who want industrial style rigidity on a bench. Hobbyists cutting mostly wood can spend less.
Amazon $2,899$2,899
Prices 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.
Scores side by side
These two sit in different size classes (large and midsize), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Sienci LongMill MK3 30x30 | Genmitsu PROVerXL 2X2 |
|---|---|---|
| Overall rating | 3.4/5 | 3.0/5 |
| Price 25% | 100 $1,400 | 2 $2,899 |
| Work area 15% | 9 1,024 sq in (32 x 32 in) | 71 713 sq in (26.7 x 26.7 in) |
| Spindle 15% | 50 spindle power not published (neutral score used) | 77 710 W spindle |
| Motion 20% | 100 linear rails, screw or rack drive, limit switches, closed-loop steppers | 100 linear rails, screw or rack drive, limit switches, closed-loop steppers |
| Warranty 25% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Sienci LongMill MK3 30x30 | Genmitsu PROVerXL 2X2 | |
|---|---|---|
| Work area | ||
| Travel (X x Y x Z) | 32 x 32 x 5.1 in | 26.7 x 26.7 x 4.4 in |
| Area | 1,024 sq in | 713 sq in |
| Spindle | ||
| Spindle | 65 mm router or 80 mm spindle mount (router not included) | 710 W AC trim router, ER11 1/4 and 1/8 in collets |
| Power | - | 710 W |
| Top speed | - | 30,000 rpm |
| Motion and control | ||
| Frame | - | aluminum extrusion with hybrid spoilboard |
| Linear rails | Yes | Yes |
| Drive | Lead screw | Ball screw |
| Closed-loop steppers | Yes | Yes |
| Limit switches | Yes | Yes |
| Controller | SLB-LITE with grblHAL | GRBL 1.1h, 32-bit board |
| Offline controller | - | Yes |
| Build | ||
| Weight | 72 lb | 198.4 lb |
| Warranty | 1 year | 1 year |
| Released | 2026-09 | 2025-08 |