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Products > CNC Machines > CNC Milling Machines      

Milling Machine CNC 3501  (Discontinued)

Milling Machine CNC
Part Number: 3501  (Discontinued)
Weight: 275 lb

Price: $3,995.95

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CNC Milling Machines
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Accessories & Upgrades

  • Complete factory-built CNC milling machine
  • 2/3 Horsepower spindle motor drives 2 Morse taper spindle
  • Electronics are built in to the machine
  • Fourth axis driver included at no extra charge
  • Includes Mach 3 demo software


The model 3501 CNC Milling Machine is a complete CNC solution. It's not a conversion or adaptation; this machine is designed and built by the factory as a CNC machine.

The Model 3501 now includes a one-shot lubrication system and an improved mill table that facilitates the use of flood coolant.

Up until now, hobby CNC has required that you make or buy a conversion of a manual milling machine. You had to integrate the mill, ball screws, stepper motors, drivers, power supplies, and breakout boards. Most people don't even know what those things are, much less how to integrate them into a working CNC machine.

The model 3501 is the perfect mill for the bench top machinist who wants to create parts and not just build a CNC machine. The power supplies and controllers are built into the mill. No extra cabinets, cables, or connectors are required. The model 3501 CNC milling machine even includes a 4th axis driver so you can add a 4th axis rotary table by simply plugging it in.

With powerful NEMA 23 hybrid stepper motors connected by zero backlash jaw couplings to precision-ground ball screws, the model 3501 can achieve positioning accuracy to 0.0005". Not many hobby-grade machines can make a claim like that. It will machine at up to 20 inches per minute and rapid traverse at up to 80 inches per minute.

A 2/3 horsepower closed loop brushless DC spindle motor and synchronized belt drive takes the spindle from 100 to 7000 rpm under full CNC control. A one-shot oiler with flexible shielded lube distribution tubing takes care of daily lubrication with a single press of a lever.

With a work envelope of 10.2" (X-axis) x 4.3" (Y-axis) x 7.1" (Z-axis) the model 3501 has large capabilities in a small machine. And at 190 pounds, you know it is not a toy. The mill table is 15" x 5.38", giving you plenty of room to mount your work and fixtures.

A software controlled receptacle on the back of the machine provides CNC control of an optional mist or flood coolant system.

And we haven’t forgotten your safety. The model 3501 carries the CE marking, the European counterpart to UL listing. A safety E-stop button right on the front and the interlocked spindle shield shut down the mill instantly.

This is the machine only; a computer and tooling must be purchased separately.

The model 3501 CNC Milling Machine is a version of the SIEG KX1.

*NOTE* We ship machines only to the US and Canada.

Chris' Tips

Chris Chris' Tips
View a comparison of the specifications for our CNC milling machines.

Here are data sheets for the machines that we sell.

A question we get a lot is What software do I need to run a CNC mill?


  • 10.2" × 4.3" × 7.1" work envelope
  • Class 5 precision hardened and ground ball screws
  • Direct drive NEMA 23 hybrid stepper motors
  • Zero backlash jaw couplings
  • Three stepper drivers for X, Y, and Z axes
  • Extra stepper driver for 4th axis pre-wired with external socket
  • Variable spindle speed under full CNC control
  • Synchronous belt spindle drive (no gears)
  • Proximity limit switches and homing on all three axes
  • USB interface board optically isolates the machine from the computer
  • Fully covered ways and ball screws
  • Emergency e-stop switch and chuck guard switch
  • CE marking (comparable to UL listing)
  • CNC controlled coolant pump receptacle
  • Power supply and control system are integral to the machine.
  • One shot oiler with flexible shielded lube distribution tubing
  • Industrial grade ABEC 5 angular contact spindle bearings
  • Dovetail slides with adjustable gibs


End Milling Capacity 0.4" (10 mm)
Face Milling Capacity 0.8" (20 mm)
Drilling Capacity 0.4" (10 mm)
Table Size 15.1" x 5.4" (384 mm x 137 mm)
T-Slots 3 slots 0.31" (8.0 mm) wide
X-Axis Travel 10.2" (260 mm)
Y-Axis Travel 4.3" (110 mm)
Z-Axis Travel 7.1" (180 mm)
Throat 5.1" (130 mm)
Ball Screws 12 mm (0.47 in) dia. x 4 mm pitch class 5 ground
X-Axis & Y-Axis NEMA 23 Motors 191 oz-in (1.35 Nm)
Z-Axis NEMA 23 Motor 312 oz-in (2.20 Nm)
Positioning Accuracy 0.0004" (0.010 mm)
Spindle Taper 2 Morse taper
Drawbar Thread 3/8"-16
Spindle Motor Brushless DC 0.67 hp (500 Watts)
Spindle Speed 100 - 7000 RPM
Spindle Torque At 1500 RPM 255 oz-in (1.80 Nm)
Spindle Bearings ABEC 5 angular contact
Power Requirements 120 V 60 Hz 6.3 Amps
Coolant Pump Receptacle Cap. 120 V 60 Hz 5 Amps
Feed Speed Maximum 20 in/min (500 mm/min)
Rapid Travel Maximum 79 in/min (2000 mm/min)
Crated Weight 248 lbs (113 kg)
Machine Weight 184 lbs (84 kg)
Overall Dimensions (W x D x H) 24.8" x 24.8" x 24.8" (630 mm x 630 mm x 630 mm)
Crate Dimensions (W x D x H) 29.5" x 27.4" x 25.6" (750 mm x 695 mm x 650 mm)


3501 CNC Milling Machine left side

3501 CNC Milling Machine right side

3501 CNC Milling Machine back


You need a computer to drive the CNC milling machine. You can get the model 4244 Machine Controller, or you can use your own computer. The computer must meet these minimum requirements:

  • 2-GHz CPU
  • 1 GB memory
  • 20-GB hard drive
  • Windows XP, 7, 8, or 10
  • 32-MB video card
  • USB port (to connect to mill)
  • Front USB port (for USB flash drives for moving files)
  • DVD/CD-ROM drive 

We do not support the use of notebook computers because the power-saving features affect the functioning of Mach3.


These machines ship by truck because they are simply too heavy and bulky for UPS Parcel Service. We normally ship truck orders a day or two after we receive the order. We add the following shipping cost to your order total:

. Local Far West Other Continental US
Delivery to commercial address $59 $115 $145
Delivery to school or secured location $79 $155 $175
Liftgate, additional Incl. $20 $20
Delivery to freight terminal $115 $115 $145
Delivery to residential address (includes liftgate) $79 $175 $195

"Local" refers to the parts of Southern California served by Hollywood Delivery Service.

"Far West" refers to ten western states: CA, OR, WA, AZ, NV, ID, UT, NM, CO, WY.

For delivery to Alaska, Hawaii, or Puerto Rico, we will check with several trucking companies to get the best price and then call for your approval before we ship.

For Canadian shipments we will provide an all-inclusive quotation for shipping, brokerage, and taxes. The brokerage fees are $108. The taxes vary by province. If you have a customs broker or want to self-clear customs please let us know.

We ship machines only to the US and Canada.

The shipping charges shown above cover the cost of shipping the machine and anything else that you purchase with it, including a second (and third) machine, up to 700 pounds total.

A "commercial address" has a company name, a public entrance and posted hours of operation. If you do not have a forklift or loading dock at your place of business, you must add the liftgate fee. If you are running a business at your residence without a public entrance and posted company name and hours of operation it is considered a residence and a not commercial address.

Schools, colleges, universities, university hospitals, military bases, government facilities and other secured locations are charged a limited access fee that is included in the amounts in the chart above.

If you choose Terminal Pickup, and there is not a terminal within 30 miles, we will confirm with you that you still want Terminal Pickup.

Liftgate service is included in the residential delivery fee. The trucking company will call you to schedule the delivery.

We offer inside delivery which gets the machine inside one doorway or into your garage:

  Local Far West Other Continental US
Inside Delivery Gets the machine inside 1 threshold
Includes liftgate service
$20 $75 $75


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