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ATC on AltMill 4×8 on Angle 1 zoom

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AltMill Starter Kit
ATC on AltMill 4×8 on Angle 1
AltMill 4×8 Front View on Angle 1
AltMill Starter Kit
AltMill Starter Kit
AltMill Starter Kit
AltMill Starter Kit
AltMill Starter Kit
AltMill Starter Kit
AltMill Starter Kit
AltMill Starter Kit
AltMill Starter Kit
AltMill Starter Kit
AltMill 4×8 Foot Print 2
AltMill 4×8 Foot Print
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AltMill 4×8 Starter Kit

Price range: $11,850.30 through $15,298.80

The AltMill 4×8 Starter Kit is an all-in-one set up for advanced CNCers. Just add your favourite bits, and you’re carving in no time.

Each Starter Kit includes:

  • AltMill 4×8 with SLB-EXT controller & VFD
  • Tool Length Sensor
  • Your choice of Spindle:
    • 1.5kW ER20 (with Clear Cut Dust Shoe)
    • 2.2kW ER20 (with Clear Cut Dust Shoe)
    • 2.2kW Automatic Tool Changer + 12-Rack Kit (with Clear Cut Dust Shoe)
  • gControl Panel Computer
  • Two 48″ T-track sets (with hold-down clamps)
  • AutoZero Touch Plate

Purchasing this kit saves you approx. 5% vs buying items individually. 

Ontario. Canada Customers: Starting April 29th, we’ll be pausing sales for all sizes of AltMill. Please read further on specific plans for each machine – ESA Compliance.

Lead times vary as kits with 1.5kW or 2.2kW spindles ship quicker than ATC spindle kits. Please select spindle type first. The lead time will update accordingly.

Lead Time: 4 weeks, 8 weeks

      Description

      ***Included with your AltMill Starter Kit***

      • One (1) AltMill 4×8
      • One (1) SLB-EXT controller and emergency stop
      • One (1) VFD
      • One (1) Spindle Kit Option:
        • 1.5KW ER20 Spindle & Clear Cut Dust Shoe
        • 2.2kW ER20 Spindle & Clear Cut Dust Shoe
        • 2.2kW ER20 Automatic Tool Changer & Clear Cut Dust Shoe + 12-Rack Kit (ATC spindle + VFD + 12-tool rack housing + 12 tool holders + 24 collets)
      • One (1) Tool Length Sensor
      • One (1) gControl Panel Computer
      • Two (2) 48″ T-Track Sets (Each set is 8pcs of T-track extrusions; one hundred (100) #8 3/4″ screws for mounting + four (4) hold down clamps)
      • One (1) AutoZero Touch Plate

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

      • Work surface (e.g. MDF sheet)
      • Screw drivers, standard bits or drill for assembly
      • Optional CAD/CAM Software

      ***Some photos may contain items for illustrative purposes, such as caster wheels 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 1 lbs
      Dimensions 1 × 1 × 1 in
      Select Spindle Type

      1.5kW Spindle, 2.2kW Spindle, ATC Spindle
      Lead time

      4 weeks, 8 weeks

      Measurements & Specifications

      • Footprint: Roughly 66″ wide and 114″ deep
      • X, Y, Z Axis Working Area: 1265 mm × 2640 mm × 210 mm (49.8″ x 104″ x 8.3″)
      • Z-axis Maximum Stock Clearance: 203 mm (8″)
      • Rapid Traverse Speed: Approx. 25,000 mm/min (1,000 IPM) in Y-axis; 16,000mm/min (590 IPM) in X-axis; 6,000mm/min (236 IPM) in Z-axis
      • Repeatability: ±0.05 mm (±0.002″)
      • Motion System: Rack and pinion using precision gearbox reduction on Y-axis; 16mm precision ball screw on X-axis; 12mm precision ball screw on Z-axis
      • Linear Motion: 15mm profiled linear guide rails and bearing blocks on all axes
      • Drive Motors: High-Torque NEMA 23 Closed-Loop Stepper Motors. 3NM torque on Y-axis; 2NM torque on X and Z axes.
      • Control System: SLB-Ext 32-bit controller with grblHAL firmware
      • Power Requirements: 120VAC, Single Phase, 4A (Spindle power requirements listed separately)
      • Weight: Approximately 400lbs as assembled, not including weight of add-ons such as spindles
      • Spindle Mount: Supports 80mm spindles and routers
      • Frame Construction: Rigid frame and linear motion design using HGR15 linear guides and ball screws on all axis mounted to a custom-designed, machined aluminum extrusion; with sturdy metal legs with the ability to add 4ft wide shelving underneath for sheet goods

      Recommended Add-ons & Accessories

      FAQs

      What are the payment plans for the AltMill 4×8?
      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.

      Are there any 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 1500W at max load
      • The 2.2KW Spindle Kit consumes 2200W 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

      What are the power supply specifications?
      All AltMills use a 110VAC, 48VDC 10A power supply, consuming up to 500 watts. The power supply comes with a North American Standard Type B NEMA 5-15P plug.

      Do you ship internationally?
      We do not have distribution centers but we ship internationally from our office via UPS.  Shipping costs vary from $300  to $500 in Canada and the US and up to a couple thousand for far reaching international locations. You are responsible for any taxes, duties and brokerage fees.

      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

      What materials can the AltMill 4×8 cut?
      If you can name it, the AltMill pretty much has it covered:

      • Woods: Softwoods, hardwoods, plywood and  MDF
      • Plastics: Acrylic, PVC, HDPE, Polycarbonate and  ABS
      • Composites: Carbon Fiber, Dibond and ACM
      • Non-Ferrous Metals: Aluminum, brass and copper (with appropriate lubrication/misting and cutting strategies)
      • Ferrous Metals: Carbon steel, alloy steel and  cast iron (with appropriate lubrication/misting and cutting strategies)
      • Foams: High-density sign foam and insulation foam

      Can I upgrade my 2×4 or 4×4 AltMill to match the 4×8 AltMill?
      Unfortunately, no. The 4×8 is the next step in the evolution of the AltMill brand, which means it incorporates newly engineered components unique to its design. It is under consideration but it will not be a priority for us to provide an upgrade path. First, given that so many additional new components are needed to go to a 4×8, the cost difference between the upgrade kit and the full kit will not be that significant. Additionally, there is a significant overhead cost to do version tracking and ensure compatibility between machine versions that will add to the cost of the kit. It’s likely that it will be more cost effective and reduce waste if customers sell their existing machines and order a full machine. 

      Are you going to make a 5x10ft AltMill?
      Not until we get the 4x8ft machines out the door first. But if we get enough interest or demand, we may consider it.

      How much assembly is involved and how long will assembly take?
      The 4×8 is big, so it’s going to take some extra time. Grab a partner to make assembly easy, and it’ll take roughly one day to fully set up. It will come with all major subassemblies, pre-assembled and precision components are pre-aligned. Check the “Assembly Instructions & Help Resources” tab for more info.

      What else will I need to get started using the machine?
      Our recommended and must-have accessories listed above are definitely what you need, but the must have of must haves is an 80mm spindle (like our 1.5KW or 2.2KW ER20s (or from a competitor) and definitely a wasteboard like ¾” MDF.

      Will the AltMill 4×8 work with an ATC?
      Heck ya. Our ATC system will be fully compatible with the 4×8 and all other sized AltMills.

      What are the power requirements of the AltMill 4×8?
      All AltMills use a 110VAC, 48VDC 10A power supply, consuming up to 500 watts. The power supply comes with a North American Standard Type B NEMA 5-15P plug. Users will also need to account for power use from the spindle, which have separate specifications.

      How big is the AltMill 4×8?
      The footprint of the AltMill is approximately 114″ long x 66” wide, and over 66” tall (when including spindle height).

      I’m not sure what to buy, an AltMill or a LongMill? Help!
      Check out this video for a summary of why each does an amazing job and can get the jobs done that you need, but have some unique considerations.

      Warranty

      The AltMill has a 1-year 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 August 1, 2026

      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 three-hundred-sixty-five (365) 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 three-hundred-sixty-five (365) 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.

      Instructions & Assembly

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