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AltMill MK2 4×4

(41 customer reviews)

$3,160.00

The AltMill is the pinnacle of hobby CNCing, bringing industrial-level precision to a price point and ecosystem for both beginners and advanced users. The AltMill MK2 4×4 is your go-to CNC when time, performance and precision are crucial.

Highlights include:

  • Production level cutting speeds (approx. 600 inches/minute)
  • Closed loop motor system on all three axis to auto-correct positioning and auto-stop when necessary (reliable for production style work)
  • Requires little maintenance during project production
  • Advanced, production-style features including Y-axis auto-squaring; limit switches by default; and tram adjustment capabilities
  • Cuts materials ranging from hardwoods to plastics, foams, composites, aluminum – even steel
  • Support for 80mm spindles and routers
  • 49″ x 49″ working area with a max Z-height of 5.5″
  • Footprint of 59″ wide and 62″ deep

The AltMill MK2 4×4 comes with a standard 80mm spindle mount only. It does not come with a spindle, which must be purchased separately.

The current lead time for delivery is 5 to 7 weeks. Please check our Order Status page for an estimated completion date of your order.

New CNC users, Read these Resources to Ensure a Successful Start

    Description

    ***Included with your AltMill MK2 4×4***

    • SLB-EXT controller and emergency stop
    • Partially pre-assembled rigid frame
    • Inductive sensors for homing
    • Sturdy metal legs with the ability to add 4ft wide shelving underneath
    • Welcome package

    ***Not included with your AltMill MK2 4×4***
    Check out our recommended products tabs for an ideal set up, but note the following ARE NOT included with your order:

    • Computer or laptop
    • Spindle
    • End mills or bits
    • T-tracks
    • Waste board (e.g. MDF 2ft x 4ft sheet)
    • Set of metric Allen keys, standard bits or drill for assembly

    ***Some photos may contain items for illustrative purposes, such as spindles, caster wheels, t-tracks, or additional shelving. There may also be cosmetic differences between the machine in the photo and the production version of the AltMill.

    Lead times
    This product has a potentially long waitlist, relative to demand and seasonality. For more info on expected shipping and delivery times, please see our Order Status page.

    Additional information

    Weight 76 lbs
    Dimensions 62 × 16 × 11 in
    Include Spindle and Dust Shoe Kit

    Include Spindle and Dust Shoe Kit, Machine Only
    origin-criterion

    C

    Measurements & Specifications

    Specifications

    • Rigid frame and linear motion design using HGR15 linear guides and ball screws on all axis mounted to a custom-designed, machined aluminum extrusion
    • Closed loop stepper motors for over 600IPM
    • Support for 80mm spindles and routers
    • 49″ by 49″ working area with a max Z-height of 5.5″
    • Inductive sensors for homing included
    • Sturdy metal legs with the ability to add 4ft wide shelving underneath
    • Footprint of 59″ wide and 62″ deep

    Must Have Add-on: Spindle & Dust Shoe

    Unlock the full potential of your AltMill with a Spindle and Dust Shoe Kit:

    Each 1.5KW ER20 Spindle & Dust Shoe Kit comes with:

    • 80mm Dust Shoe
    • ER20, 80mm, 1.5KW 110V Air-Cooled Spindle
    • 110V, 1.5KW, 3-Phase VFD
    • AC power cable and 5m spindle power cable
    • ER20 1/8, 1/4″, 3/8″and 1/2″ collets (one of each)
    • Data cable to connect to the AltMill/SLB-EXT controller for remote speed control

    Each 2.2KW ER20 Spindle & Dust Shoe Kit will come with:

    • 80mm Dust Shoe
    • ER20, 80mm, 2.2KW 220V Air-Cooled Spindle
    • 220V input, 2.2KW, 3-Phase output VFD
    • NEMA 6-15P AC power cable and 5m spindle power cable
    • ER20 1/8, 1/4″, 3/8″and 1/2″ collets (one of each)

    Recommended Add-ons & Accessories

    FAQs

    Choosing an AltMill vs a LongMill

    LongMill vs. AltMill: Which CNC Machine is Right for You?

    Payment

    Full Payment is required at time of purchase to get your order into the Queue. We ship on a first-come, first-served basis. If you choose local pick-up, you are subjected to the queue order and cannot get your machine quicker.

    Power Requirements

    We recommend allocating two 15A 110V/120V circuits — one for the spindle and dust collection system, the other for the machine and a computer.

    • The AltMill consumes 500W and runs off a 48V 10A power supply
    • The 1.5KW Spindle Kit consumes 1500-1600W at max load

    If you live in a country with 220V/240V power you must use a transformer to convert to 110V/120V.

    • To solely run the machine, you need a rating above 500W
    • To run the machine and spindle, you need a rating of 2000W

    International Shipping

    We do not have distribution centers but we ship internationally from our office via UPS.  Shipping costs vary from $300  to $1900 USD. You are responsible for any taxes, duties and brokerage fees.

      • HS Code 8465.91
      • Carton Sizes and weights
        • Package 1, 62x16x11 (in) 70 lbs (X rail box)
        • Package 2, 62x16x11 (in) 70 lbs (Y rail box)
        • Package 3, 37x10x11 (in) 65 lbs (Main box)
        • Package 4, 15x13x5 (in) 20 lbs (Spindle kit)

    3rd Party Spindles

    I would like to source my own spindle, what should I be aware of?

    • For spindles 2.2KW or above, you will need to install extra 220VAC wiring
    • The AltMill comes with an 80mm spindle mount, we do not have larger diameter mounts at the moment
    • The VFDs that may work with our controller are: Huanyang v1, Huanyang P2A, Yalang YL620, H-100, and GS20, however they are not plug-and-play — read this article for further information

    More Information

    Check out our comprehensive FAQ for prospective customers, addressing questions such as power requirements, spindle sourcing, and bundle deal info. 

    Warranty

    The AltMill has a 120 day warranty once it arrives at your door.

    We want you to have a great experience with your machine, so if any parts are found to be missing or damaged, please email us. We will ensure that you receive the support you need to restore your AltMill to operating condition or provide a full or partial refund.

    You may cancel an order if it has not shipped yet, please contact us if you wish to do so. We do not accept returns for AltMills that have already shipped.

    General Warranty and Limits of Service:

    Effective March 11, 2024

    Throughout this policy the words “we”, “us” and “our”, or “Sienci Labs” will be used to refer to Sienci Labs Inc. herein and “AltMill” or “machine” will refer to Sienci Labs’ Sienci AltMill. Additionally, the words “you”,  “your”, “user”, and “operator”  will refer to the original purchaser/customer, user, or viewer of any of the products or media provided by or through Sienci Labs.

    Sienci Labs Inc. (the “Company”) grants the AltMill (the “Product”) a standard warranty within Canada and the US to the original customer to be free from missing parts, defects in material, and defects in workmanship for a period of one hundred and twenty (120) days from the date of receipt by the original purchaser. Sienci Labs Inc. will ensure that the appropriate support is provided to the original customer to restore the AltMill to operational condition or provide a full or partial refund under the sole discretion of the Company.

    This warranty does not cover damage due to improper use or assembly, lack of maintenance, normal wear and tear, or modifications to the AltMill which are not produced or authorized by the Company. Consumables such as cutting tools and sample or stock materials which may have come with your AltMill are not included in this warranty.

    This warranty will become void if the operator does not follow the Safety Warnings and Guidelines, uses the Product for illegal purposes, intentionally causes damage to the Product, or transfers the Product to another owner.

    The original customer must contact Sienci Labs Inc. within one-hundred and twenty (120) days of receiving their order to make a warranty claim to be eligible for warranty service. Proof of purchase, tracking number, email address, or other material will be used to confirm the original purchasing date and the identity of the original customer. If damage was due to shipping, original packaging materials must be kept in the original received condition. Photos, videos, written descriptions, and other items may be requested to assess and validate a warranty claim. 

    In the case Sienci Labs Inc. requires the original parts to be returned, the customer is solely responsible for packing all items securely. Damage incurred during return shipping will not be covered by the warranty. A method of payment such as a credit card may be requested by Sienci Labs Inc. to cover shipping costs or damaged items if Products are not eligible for warranty service.

    Assembly Instructions & Help Resources

    AltMill MK2 CNC Assembly Guide | Full Setup Tutorial

    AltMill CNC Setup Guide: Connect, Test, and Surface for Your First Project #altmill #cncsetup

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    Introducing the AltMill MK2 CNC: Upgrades, Pricing Updates, and Future Plans

    41 reviews for AltMill MK2 4×4

    4.9
    Based on 41 reviews
    5 star
    92
    		92%
    4 star
    4
    		4%
    3 star
    2
    		2%
    2 star
    		0%
    1 star
    		0%

    1. Philippus Korf (verified owner) –

      What a machine. Well engineered, well built, it just works well

      (0) (0)

    2. Gary Gardner (verified owner) –

      No spindle in Canada so I bought pwn 2.2 water cooled and have to run in manual mode , G controller will not open to G sender , so i run off laptop in manual mode. Just gotta rememberto shut spindleoff beforei go to change bits, having a blast with it, asked about settings and received a message back about little to no support on 3rd party spindles from you guys, but you don’t have 1 you can sell in Canada ,

      (0) (0)

    3. Charles (verified owner) –

      Great hobby+ CNC at a decent price and with excellent customer support. I wasn’t even looking at buying a CNC until I stumbled upon the company web site via. I liked what I saw, not only for the product, but for the company philosophy. Decided then to buy the Altmill for a winter hobby.

      (1) (0)

    4. Neil (verified owner) –

      easy install and setup

      (0) (0)

    5. Jean-Francois Guimont (verified owner) –

      I am sorry that I did not reach out sooner. I did not use my machine much so far due to some circumstances. I got excellent support prior and during the assembly. The machine design is well done, and I really appreciate the overall design.

      (0) (0)

    6. William McConnon (verified owner) –

      Very capable machine for its price range. What I really like is the company support. My experience has been outstanding from the people employed by Sienci. It speaks very highly of this company.

      (0) (0)

    7. Brian (verified owner) –

      Great packaging that protected the components from damage. Assembly, calibration and first use all went well. Well thought out instructions and lots of support online from Sienci forum and others like IDC woodcraft. Overall, very well done Sienci!

      (0) (0)

    8. Daniel N. (verified owner) –

      Very well engineered. Appreciate the precision of the assembly parts.

      (0) (0)

    9. Curtis Williams (verified owner) –

      Having tons of fun with it!

      (0) (0)

    10. SCOTT MILLIGAN (verified owner) –

      An amazing piece of equipment, long time CNC user, very happy with purchase.

      (0) (0)

    11. Edward Lavin (verified owner) –

      It works great right out of the box!!! Very well thought out and engineering terrific on it , quality of build first class ! Impressive equipment!! Ed

      (0) (0)

    12. Damian (verified owner) –

      This is an amazing value. It is rigid, fast, and reliable. My only knock is that the SLB could use more 2 way communication ports to make it easier to install things like 3rd party ATC’s.

      (0) (0)

    13. James Long (verified owner) –

      The router is working great

      (0) (0)

    14. Andre Dart (verified owner) –

      Love it

      (0) (0)

    15. Philip S. (verified owner) –

      Intuitive assembly and operation. Almost “Plug and Play”

      (0) (0)

    16. Mark Smith (verified owner) –

      Assembly instructions a bit confusing. Between youtube and written instructions was able to figure it out.
      A bit disappointed in gsender upgrade. I was able to use previous version on my 1 year old laptop. Was surprised when current version didn’t allow access to precision control due to my laptop not being full HD.
      Didn’t see the warning when doing the upgrade. Now having to reconfigure my setup due to gsender software upgrade.

      (0) (0)

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