# Bantam Tools Desktop CNC Milling Machine vs Sienci LongMill MK2 (48x30): specs and price compared

A sourced, side-by-side comparison of the Bantam Tools Desktop CNC Milling Machine (Bantam Tools) and Sienci LongMill MK2 (48x30) (Sienci Labs) among desktop cnc machines. Sienci LongMill MK2 (48x30) is the cheaper of the two at $1799.

## Side by side

| Spec | Bantam Tools Desktop CNC Milling Machine | Sienci LongMill MK2 (48x30) |
| --- | --- | --- |
| US price | $6999 | $1799 |
| Brand | Bantam Tools | Sienci Labs |
| Released | 2019-01-01 | 2022-02-01 |
| Work area x (mm) | 178 | 1219 |
| Work area y (mm) | 229 | 762 |
| Work area z (mm) | 84 | — |
| Spindle power (W) | 250 | 710 |
| Spindle speed (rpm) | 10,000-28,000 | 10,000-30,000 |
| Frame material | Fully enclosed steel chassis with powder-coat finish | Extruded aluminum rails with UHMW/HDPE wheels, lead screw drive on all axes |
| Controller firmware | Bantam Tools Milling Machine Software (proprietary, USB-connected) | Sienci controller box (GRBL-based), gSender sender software |
| Max feed rate mm min | 6350 | — |
| Repeatability (mm) | 0.025 | — |

## Key differences

- Work area x (mm): Bantam Tools Desktop CNC Milling Machine 178 vs Sienci LongMill MK2 (48x30) 1219
- Work area y (mm): Bantam Tools Desktop CNC Milling Machine 229 vs Sienci LongMill MK2 (48x30) 762
- Spindle power (W): Bantam Tools Desktop CNC Milling Machine 250 vs Sienci LongMill MK2 (48x30) 710
- Spindle speed (rpm): Bantam Tools Desktop CNC Milling Machine 10,000-28,000 vs Sienci LongMill MK2 (48x30) 10,000-30,000
- Frame material: Bantam Tools Desktop CNC Milling Machine Fully enclosed steel chassis with powder-coat finish vs Sienci LongMill MK2 (48x30) Extruded aluminum rails with UHMW/HDPE wheels, lead screw drive on all axes
- Controller firmware: Bantam Tools Desktop CNC Milling Machine Bantam Tools Milling Machine Software (proprietary, USB-connected) vs Sienci LongMill MK2 (48x30) Sienci controller box (GRBL-based), gSender sender software

## Sources

- Bantam Tools Desktop CNC Milling Machine: https://bantamtools.com/products/bantam-tools-desktop-cnc-milling-machine (bantamtools.com, verified 2026-08-09)
- Sienci LongMill MK2 (48x30): https://sienci.com/2022/02/24/everything-you-need-to-know-about-the-longmill-mk2-48x30-and-extension-kits/ (sienci.com, verified 2026-08-09)

Canonical: https://frontdeskreview.com/gear/desktop-cnc-machines/bantam-tools-desktop-cnc-milling-machine-vs-sienci-longmill-mk2-48x30/
Cite: Per The Front Desk Review, Bantam Tools Desktop CNC Milling Machine ($6999) vs Sienci LongMill MK2 (48x30) ($1799) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/desktop-cnc-machines/bantam-tools-desktop-cnc-milling-machine-vs-sienci-longmill-mk2-48x30/
License: CC BY 4.0.