Sherline 4000-CNC/4100-CNC 8" Tabletop Lathe CNC-Ready vs Sherline 6840 17″ Ball Screw Benchtop Lathe
Technical comparison · Turning (lathe)
6840 17″ Ball Screw Benchtop Lathe is the most capable in its class. 4000-CNC/4100-CNC 8" Tabletop Lathe CNC-Ready and 6840 17″ Ball Screw Benchtop Lathe are two turning (lathe) in a similar class. Choose 4000-CNC/4100-CNC 8" Tabletop Lathe CNC-Ready if price matters more; choose 6840 17″ Ball Screw Benchtop Lathe if work area matters more. On the category's overall technical index, 6840 17″ Ball Screw Benchtop Lathe scores 100/100 against 36/100 for 4000-CNC/4100-CNC 8" Tabletop Lathe CNC-Ready.
| Parameter |
4000-CNC/4100-CNC 8" Tabletop Lathe CNC-Ready
Sherline
F2 · Intermediate
|
6840 17″ Ball Screw Benchtop Lathe
Sherline
F2 · Intermediate
|
|---|---|---|
| Awards | — | |
| Identity | ||
| Launch year | — | 2020 |
| Use tier | F2 — Intermediate | F2 — Intermediate |
| Price | ||
| Price (€) | ~800–1100 € | ~1400–2000 € |
| Universal specs | ||
| Dimensions (W×D×H) (cm) | 26.7 × – × 21.6 cm | 26.35 × – × 25.4 cm |
| Weight (kg) | 10.9 kg | 21.4 kg |
| Work area (mm) | 203 × 110 mm | 430 × 116 mm |
| Z-axis height (mm) | — | 367 mm |
| Voltage (V) | 240 V | 240 V |
| Maximum speed | 2800 rpm | 2800 rpm |
| Declared precision | 0.0127 mm | 0.05 mm |
| Category specs | ||
| Swing over bed (mm) | 90 mm | 151 mm |
| Distance between centers (mm) | 203 mm | 430 mm |
| Ecosystem | ||
| Cloud dependency | No | No |
| Software notes | The machine is prepared for CNC but ships without stepper motors or a CNC controller, which must be purchased separately. Control software is not included in the base configuration. | The 6840 is a CNC-ready machine: no controller is included in the base configuration. Buyers may choose from a 4-axis Linux driver box (with LinuxCNC), the Sherline/Acorn controller (based on Centroid CNC12, which supports Intercon conversational CAM), or any third-party controller compatible with NEMA 23 stepper motors. The MASSO G3 Touch is not available as an option on this model and is exclusive to the Accu-Pro line. G-code programs can be generated on any operating system using third-party CAM software. |
MakerSpecs Awards
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Most capable Intermediate
Highest technical score among the 46 Turning (lathe) between €350 and €900 printers: 100/100.
How we assign awards →The differences that matter
- Work area: 4000-CNC/4100-CNC 8" Tabletop Lathe CNC-Ready 203×110 mm vs 6840 17″ Ball Screw Benchtop Lathe 430×116 mm — 6840 17″ Ball Screw Benchtop Lathe wins (+123%)
- Price: 4000-CNC/4100-CNC 8" Tabletop Lathe CNC-Ready 950 € vs 6840 17″ Ball Screw Benchtop Lathe 1700 € — 4000-CNC/4100-CNC 8" Tabletop Lathe CNC-Ready wins (+79%)
- Swing over bed: 4000-CNC/4100-CNC 8" Tabletop Lathe CNC-Ready 90 mm vs 6840 17″ Ball Screw Benchtop Lathe 151 mm — 6840 17″ Ball Screw Benchtop Lathe wins (+68%)
- Distance between centers: 4000-CNC/4100-CNC 8" Tabletop Lathe CNC-Ready 203 mm vs 6840 17″ Ball Screw Benchtop Lathe 430 mm — 6840 17″ Ball Screw Benchtop Lathe wins (+112%)
Which one to choose
Choose 4000-CNC/4100-CNC 8" Tabletop Lathe CNC-Ready if…
you value price.
Choose 6840 17″ Ball Screw Benchtop Lathe if…
you value work area, swing over bed and distance between centers. It is the most capable in its class.
MakerSpecs is an independent atlas. We don't sell products: this comparison links to both sheets, where you'll find complete data and official links.