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Sienci Labs
Sienci LongMill MK2 (48x30)
$1799
Released 2022-02-01
Best Desktop Cnc Machines · head-to-head
Sienci LongMill MK2 (48x30) vs OpenBuilds LEAD CNC 1010
A sourced, side-by-side comparison. OpenBuilds LEAD CNC 1010 is cheaper at $1665.97. Every spec and price links to its source.
OpenBuilds
OpenBuilds LEAD CNC 1010
$1665.97Cheaper
Which is better: the Sienci LongMill MK2 (48x30) or OpenBuilds LEAD CNC 1010?
On the specs we track, they're closely matched. The OpenBuilds LEAD CNC 1010 is the cheaper at $1665.97.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Sienci LongMill MK2 (48x30) | OpenBuilds LEAD CNC 1010 |
|---|---|---|
| US price | $1799 | $1665.97 |
| Brand | Sienci Labs | OpenBuilds |
| Released | 2022-02-01 | — |
| Work area x (mm) | 1219 | 730 |
| Work area y (mm) | 762 | 810 |
| Work area z (mm) | — | 102 |
| Spindle power (W) | 710 | — |
| Spindle speed (rpm) | 10,000-30,000 | — |
| Frame material | Extruded aluminum rails with UHMW/HDPE wheels, lead screw drive on all axes | C-Beam aluminum extrusion with dual XLarge C-Beam gantry plates, Xtreme solid V-wheels |
| Controller firmware | Sienci controller box (GRBL-based), gSender sender software | OpenBuilds BlackBox Motion Control System (ATmega328p, GRBL 1.1) |
| Max feed rate mm min | — | — |
| Repeatability (mm) | — | 0.08 |
Sources — Sienci LongMill MK2 (48x30): sienci.com (verified 2026-08-09). OpenBuilds LEAD CNC 1010: makertechstore.com (verified 2026-08-09).
What's the difference between the Sienci LongMill MK2 (48x30) and OpenBuilds LEAD CNC 1010?
Where the two actually differ on the specs we track (4 of 9). Matching specs are omitted.
- Work area x (mm): Sienci LongMill MK2 (48x30) 1219 vs OpenBuilds LEAD CNC 1010 730
- Work area y (mm): Sienci LongMill MK2 (48x30) 762 vs OpenBuilds LEAD CNC 1010 810
- Frame material: Sienci LongMill MK2 (48x30) Extruded aluminum rails with UHMW/HDPE wheels, lead screw drive on all axes vs OpenBuilds LEAD CNC 1010 C-Beam aluminum extrusion with dual XLarge C-Beam gantry plates, Xtreme solid V-wheels
- Controller firmware: Sienci LongMill MK2 (48x30) Sienci controller box (GRBL-based), gSender sender software vs OpenBuilds LEAD CNC 1010 OpenBuilds BlackBox Motion Control System (ATmega328p, GRBL 1.1)