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Lobo CNC Machine Specifications

Machine Configuration:Bed-type milling machine (see below for comparison with CNC router)
Table Dimensions:15" x 4"
Spindle to Table Clearance:7"
Throat Clearance:6.5"
X, Y, Z Travel:10" x 8" x 7"
Drive screws:
1/4-20 with anti-backlash nut
Max. Traverse Speed:45 inches per minute
Motor Type:Brushless servo motors with encoder feedback or NEMA 17 steppers
Spindle Mounting:Fits nominal 2.5" diameter compact routers
Machine weight:24 lbs (without router)


CNC Configurations: Milling Machine vs. Router:
What's the difference between a CNC milling machine and  CNC router?  Both do essentially the same thing: move a rotating cutter in X, Y and Z relative to your workpiece.  The main difference is in which parts of the machine move, and which parts are stationary.

- A router configuration typically has your workpiece mounted on a stationary table, and the spindle is mounted on an X-Y-Z gantry.  Usually the Y-axis moves relative to the fixed table, the X-axis moves relative to the Y-axis, and the Z-axis moves relative to the X axis.  The clearance between the gantry and table is typically only a few inches.  This configuration lends itself doing shallow cuts in very large flat workpieces.  Also, the large dimensions of the gantry make it difficult to maintain stiffness.

- Large X-Y workspace
- Small Z clearance and  range of motion
- Mostly for working with flat stock
- Clamping via thru-hole screws or hold-down clamps (rarely room for a vise)
Router

- A milling machine configuration typically has your workpiece mounted on an X-Y table, and spindle moves on a linear axis above the workpiece.  This configuration usually has much more clearance between the spindle and table, giving you room to reach in for deeper cuts and to use longer tooling.  The structure also tends to be stiffer.  The main drawback is the size of your workpiece is limited.

- Limited X-Y workspace
- Larger Z clearance and range of motion
- Better for machining irregular shaped objects
- Option of using a drill-press type vice eases workpiece clamping
Milling Machine
The other consideration in choosing a configuration is ease of use.  Having parts (and tooling) just barely fit within the Z clearance can be very inconvenient to work with.  Being able to lift the spindle well clear of your work, or being able to test a CNC program by carving in the air above your part can make life much easier.  Also because the Lobo CNC machine has actual handwheels you can turn (in addition to the CNC motion) the milling machine configuration keeps the handwheels within easy reach.  It's these little things that can make a machine a joy to use.


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