Sienci LongMill MK3 48x30
#4 in LargeFull review
For a hobbyist who wants a rigid rail machine with a 49 by 32 inch bed for well under $2,000, and already has or will buy a trim router.
Sienci Labs $1,800$1,800
3.3/5
For a small shop that wants rails and ballscrews on a 4x4 bed with US support. Add the cost of a router before comparing it with machines that include one.
- 48.7 x 48.7 x 6.1 inWork area
- Ball screwDrive
- YesLinear rails
Check price at Carbide 3D$3,800
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Linear rails and ballscrews on every axis hold accuracy in hardwood and aluminum
- A 48.7 x 48.7 in cutting area takes full width panels and large signs
- Built and supported in the USA, with ready to use Carbide Create and Carbide Motion software
- Inductive homing with dual Y squaring keeps the gantry square after each start
Cons
- No router in the box, so budget for a 65 mm trim router or a spindle
- Needs a computer beside the machine to run jobs
- The 18 month warranty is short next to the 5 years Onefinity gives its Elite machines
The Carbide 3D Shapeoko 5 Pro family
Every Carbide 3D Shapeoko 5 Pro model we rank, smallest first. Ratings compare each against its own size.
| Model | Work area | Rating | Price |
|---|---|---|---|
| Carbide 3D Shapeoko 5.1 Pro 2x2 | 24.5 x 24.5 x 6.1 in | 2.9/5 | $2,980 |
| Carbide 3D Shapeoko 5.1 Pro 4x2 | 48.7 x 24.5 x 6.1 in | 2.9/5 | $3,550 |
| Carbide 3D Shapeoko 5.1 Pro 4x4 (this one) | 48.7 x 48.7 x 6.1 in | 3.3/5 | $3,800 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | S51-44-HYBRID |
|---|---|
| Work area | |
| Travel (X x Y x Z) | 48.7 x 48.7 x 6.1 in |
| Area | 2,372 sq in |
| Spindle | |
| Spindle | 65 mm trim router mount (router not included) |
| Motion and control | |
| Frame | custom extrusions on a rigid base frame |
| Linear rails | Yes |
| Drive | Ball screw |
| Limit switches | Yes |
| Controller | Carbide Motion |
| Offline controller | No |
| Build | |
| Warranty | 1.5 years |
| Released | 2025-11 |
Alternatives in this size
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
FoxAlien XE-Ultra 8080
#7 in LargeFull review
A large, rigid benchtop router for woodworkers who want a near 3 by 3 ft bed with ball screws. Add a router or spindle and a spoilboard to the price.
Amazon $1,799$1,799
Compare
Compare the Carbide 3D Shapeoko 5.1 Pro 4x4 with any other CNC router →
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