FAQs

  • Only plasma cutters with blow-back start torches are compatible with the CrossFire™ CNC plasma machine. Plasma machines that operate using High Frequency (HF) start torches are not permitted for use with the CrossFire™ machine. The use of these style of plasma cutters can interfere with the sensitive electronics inside the machine enclosure which can result in erratic motor steps and permanent electronics failure. The use of this style of plasma cutter with your CrossFire™ machine will effectively void your warranty. Please contact your plasma cutter manufacture if you are unsure about what style of plasma torch is included with your plasma cutter. Below is a list of known compatible plasma cutters:


    RAZORWELD

    Vipercut 30i 30A
    Razorcut 45 45A
    HYPERTHERM
    Powermax 30 AIR 30A
    Powermax 30/30XP 30A
    Powermax 45/45XP 45A
    Powermax 65 65A
    Powermax 85 85A
    Powermax 105 105
    Powermax 125 125A
    HYPERTHERM (discontinued)
    Powermax 380 27A
    Powermax 600 40A
    Powermax 800 50A
    Powermax 900 55A
    Powermax 1000 60A
    Powermax 1100 80A
    Powermax 1250 80A
    Powermax 1650 100A
    THERMAL DYNAMICS
    Cutmaster 42 40A
    Cutmaster 52 45A
    Cutmaster 60i 60A
    Cutmaster 82 72A
    Cutmaster 102 100A
    Cutmaster 152 120A

    MILLER

    Spectrum 375 X-TREME 30A

    Spectrum 625 X-TREME 40A
    Spectrum 875 60A
    Spectrum 875 Auto-Line 60A
    LINCOLN ELECTRIC
    Tomahawk 375 25A
    Tomahawk 625 40A
    Tomahawk 1000 60A
    Tomahawk 1500 100A

    LONGEVITY

    FORCECUT 40D 40A

    FORCECUT 42i 40A
    FORCECUT 62i 60A
    FORCECUT 82i 80A
    HOBART
    AirForce 27i 27A
    AirForce 40i 40A
    EVERLAST
    PowerPlasma 50S 50A
    PowerPlasma 60S 60A
    PowerPlasma 80S 80A
    PowerPlasma 100S 100A
    CHICAGO ELECTRIC
    Harbor Freight 240V 40A
    LOTOSz
    Supreme CUT60D 60A
    MATCO TOOLS
    MA48 40A
    MA68 60A
    AHP WELDING
    AlphaCut 60 60A
  • Up until now, CNC plasma cutting technology was restricted to industrial applications because the cost was prohibitively high. When Langmuir Systems sought to bring CNC plasma cutting machines to the masses, the cheapest CNC plasma cutting system on the market that was labeled as a 'hobby-level' machine was $5,000 and was lacking several key features out of the box. We felt that this was hardly a solution for the everyday builder given the incredibly high price tag for such an incomplete machine. Over the next few years, the engineering team at Langmuir Systems was hard at work with one simple goal in mind; develop a useable and accurate CNC plasma machine that can be afforded by the masses. What resulted was the CrossFire™ CNC plasma machine capable of making highly accurate parts right out of the box featuring an integrated cutting table, rolling stand, self-compensating electro-mechanical drive system, plug-n-play electronics system, and USB compatibility. At Langmuir Systems we are continuously dedicated to bringing high quality and affordable industrial technology to our customers; over the past decade we have witnessed the explosion of the makerspace community and we hope that our contribution with this machine will continue to see this movement flourish.
  • The CrossFire™CNC plasma machine was designed to be a complete out-of-the box solution for CNC plasma cutting. It includes everything that is needed to begin making parts with the exception of a computer and a plasma cutter (both of these items can be purchased from us directly during checkout). Below is a snapshot of what is included with your basic machine purchase:
    • Complete two-axis CNC plasma cutting machine - just attach your plasma torch and start cutting.
    • All assembly and motion control hardware included
    • Two NEMA 23 stepper motors and complete plug & play electronics motion control unit
    • Machine slats, table legs, rigid all-steel powder coated frame, hand/machine torch mount, 2.5 ft cable routing pole, variable thickness tip-to-work shims, and a torch quick-release hex key
    • All electronics cables including 120V power cord, USB cable, Torch ON/OFF wiring, and motor cables
    • Manual Z-axis height control and quick-adjustment knob
    • Autodesk Fusion 360 CAD Design Software and CAM Toolpath Generation Software (Free to use for hobbyists and small startups).
    • Trial Mach3 Motion Control Software (includes enough lines of code for basic to intermediate shapes, 500 G-code line limit)
    • Unlimited access to Langmuir Systems Project Files
    • Detailed Assembly Instructions and Basic Operations Manual
    • Access to lifetime customer support
    • 12 Month Factory Warranty
  • The schematic below shows the overall floor space and height requirements that are needed to operate this machine. All dimensions shown are in inches.

  • The plasma cutting process is capable of cutting most types of metals and alloys. Typically this includes steel, stainless steel, aluminum, titanium, copper, and brass; although many other ferrous and non-ferrous metals are possible. Please consult your respective plasma cutter manufacturer to obtain a full list of materials that can be cut with your machine.
  • The CrossFire™ CNC machine was designed as a personal garage-sized table with maximum travel limits of 25.3" (X) x 23.3" (Y) x 3.0" (Z). The X and Y axis travel is controlled electronically by the stepper motors and the Z axis height is adjusted manually with the quick adjustment height control knob.
  • The total machine weight is approximately 110 lbs (50 kg). Each machine includes four swivel rolling casters (2 locking) for increased portability.


  • The maximum rated travel speed of this machine is 250 IPM (inches per minute).
  • The maximum material weight that can be supported by the slat table surface is 200 lbs (90 kg).
  • The maximum plate thickness that can be supported by this machine is 1" (25.4mm) steel plate. While the CrossFire™ CNC machine is capable of supporting material of up to 1" thickness for cutting, the maximum cutting thickness for your setup will be dependent on the specific plasma cutter that you are using. For example, the RAZORWELD Vipercut 30i is rated for continuous cutting of 1/4" thickness but is also rated for severance cutting of up to 3/4" material. We advise you to consult your respective plasma cutter manufacturer to obtain relevant information related to maximum cutting thickness of your machine.
  • Typical hand-held plasma cutting machines are rated for minimum cut thickness of 26 gauge (0.018"). We advise you to consult your respective plasma cutter manufacturer to obtain relevant information related to minimum cutting thickness information your machine.
  • Yes. At this time, an expansion pack is not available for purchase but Langmuir Systems is currently designing a bolt-on expansion upgrade for the CrossFire™machine. This upgrade will allow users to convert their existing CrossFire™ machine into the larger CrossFire™ XL machine. Travel in the X direction will remain at 25.3" and travel along the Y direction will be increased to roughly 48". Please check our blog for regular updates on this product which should be available for purchase during the Batch 1 Pre-order campaign. The CrossFire™ machine can be easily swapped back and fourth between both sizes as necessary to suit your current needs.
  • A water table is simply a tray filled with water that surrounds the slat bed of a gantry-style CNC plasma machine. The tray is filled with water to below the top surface of the slat bed so that the action of plasma cutting (forced air) causes water in the tray to splash back up onto the backside of the part being cut. This allows for part cooling, reduces cutting noise, decreases part warpage, reduces arc flash, and reduces smoke and cutting dust.

    A water table is not required for operation of the CrossFire™ CNC plasma machine and it is not provided standard with the basic table kit. Many CNC plasma tables are capable of operation without a water tray or a spray coolant system, but thermal warpage can be an issue when cutting materials thinner than 1/8" thick. The reason for this distortion is that plasma cutting imparts a large amount of heat energy into the material and the resulting thermal gradient can cause a part to warp. When the part warps, it can stick above the original flat surface of the plate and interfere with the movement of the torch. As a result, we strongly recommend using some type of cooling system when cutting thinner material to prevent warpage that may potentially ruin your part; especially when high detailed cutting such as artwork is required (high localized heat input). If you are not able to purchase a water table, we have had an equal amount of success by using a standard spray water bottle and continuously spraying the plasma arc with the water bottle during cutting to cool the part. Do not worry about extinguishing the arc with water, plasma cutters are capable of cutting material even while completely submerged. Another option is to make your own water table using our plans shown on our Projects page.

    NOTE: When cutting aluminum on a water table, it is encouraged to have the water level be at least 1/8" below the bottom surface of the material and to use proper ventilation. The reason for this is that molten aluminum can react with water to form flammable hydrogen gas which can build-up and cause an explosion if large enough concentrations come into contact with the plasma arc. In addition, aluminum-lithium allows should NEVER be cut with a water table due to the high reactivity of lithium and water.

  • No. We have found that a powered Z-axis is not required when cutting on a machine of this size. We recommend using a slightly higher cut height and also using a cooling system such as a water table on thinner material to prevent warpage which may obstruct the torch motion. We have found that cutting at the manufacturers listed 'pierce height' has no substantial decrease in consumable lifetime especially in a non-production setting. We recommend experimenting with test cuts with your plasma cutter on the CrossFire™ machine in order to dial in specific cutting parameters and to optimize cut quality and consumable lifetime.
  • The pierce height refers to the distance between the material top surface and the torch tip when the plasma arc is initiated. The cut height refers to the distance between the material top surface and the torch tip when the plasma cutter is actively cutting along a geometric tool path. Since the CrossFire™ machine does not have a powered Z-Axis, the cut height and pierce height are identical for this machine when cutting. We recommend consulting your plasma cutter manufacturer for relevant cutting parameters which should include these values for a given material and thickness. We have found that cutting at the manufacturers listed pierce height has no substantial decrease in consumable lifetime, espeically in a non-production setting.
  • All Langmuir Systems products are covered by a 12 month limited warranty on hardware and 6 month limited warranty on electronics. The terms of the warranty are listed below:
    1. Warranty benefits only apply to the original purchaser and expire if goods are resold. You must provide proof of purchase and your machine's unique serial number (if applicable) via email before a warranty claim may be filed.
    2. The buyer has 7 days after delivery to report and request to receive any missing items. Langmuir Systems will ship the missing items to the buyer within 10 business days. Langmuir Systems has the right to refuse replacement of items to any buyer that it suspects may not be truthful. The buyer is responsible for the replacement of any missing items after the 7 day period expires.
    3. Langmuir Systems guarantees the goods received to be defect free for a period of 12 months for mechanical hardware and 6 months for electronics. Items that meet the following conditions will be replaced free of charge:
      1. Items that are received in defective and unusable condition.
      2. Items that become defective and unusable after use as a result of a manufacturing, design, or material defect.
    4. The warranty does not cover the following types of defects:
      1. Defects that do not negatively affect the items functionality. Examples may include scratches, dings, dents, and surface abrasions.
      2. Defects that are caused by improper assembly.
      3. Defects that are caused by improper use.
      4. Defects that are caused by inadequate or incorrect routine maintenance.
      5. Defects that are caused by improper storage of the item or exposure of the item to the elements.
      6. Defects that are caused by normal wear and tear.
    5. If a damaged or defective item is covered by the warranty, Langmuir Systems reserves the right to request that the defective item be shipped back before supplying a replacement. Langmuir Systems will supply a shipping label to cover the expense of the return shipment. The Buyer is responsible for handling and packaging. Langmuir Systems will ship either a refurbished or brand new replacement item within 5 business days of receiving the defective item.
  • All products sold directly by Langmuir Systems are eligible for return and refund. The terms of the return and refund policy are listed below:
    1. Only the original buyer of the item is eligible to return the item for a refund. Proof of purchase is required in order to be eligible for a refund.
    2. A return must be requested within 30 calendar days following the delivery of the item. Return requests after the eligibility period will be denied.
    3. The buyer is responsible for all shipping and handling costs associated with shipping the item back.
    4. Items that are eligible for return must meet all of the following requirements:
      1. The item must be in unused condition.
      2. The item must be free of defects.
      3. The item must be received in the original packaging.
    5. Langmuir Systems will inspect the item within 5 business days of receiving it. The buyer will be informed if it passes inspection and thus is eligible for a refund.
    6. If Langmuir Systems concludes that the item meets the refund eligibility requirements, a refund for the original transaction amount minus a 20% restocking fee will be issued to the Buyer within 5 business days following the completion of the inspection.
    7. 'In person' returns require permission from Langmuir Systems in advance.
  • Yes. The CrossFire™ CNC plasma machine is a great first machine for anyone that is interested in trying to start a small home business with their plasma cutting services. The plasma machine is capable of supporting a large range of commercial services including piece work (job shop), prototyping, light production runs, custom signage, art work and many others. Please visit our Projects Page for an idea of the type of products that can be created with the CrossFire™ machine. In addition, the CrossFire™ machine is expandable to a larger size machine (double the table area) with an upgrade expansion kit that will be available for purchase in the future from Langmuir Systems.
  • No! Only plasma cutters with blow-back start torches are compatible with the CrossFire™ CNC plasma machine. Plasma machines that operate using High Frequency (HF) start torches are not permitted for use with the CrossFire™ machine. The use of these style of plasma cutters can interfere with the sensitive electronics inside the machine enclosure which can result in erratic motor steps and permanent electronics failure. The use of this style of plasma cutter with your CrossFire™ machine will effectively void your warranty. Please contact your plasma cutter manufacture if you are unsure about what style of plasma torch is included with your plasma cutter. Please see a complete list of Langmuir Systems approved plasma cutters.
  • Yes. The CrossFire™ CNC plasma machine was designed to be the first true hobby-level machine and it comes standard with an adjustable universal hand torch mount. Each machine also includes a T-handle hex key for quick-release of your hand torch for fast cutting off of the machine. A straight machine torch is also compatible with the universal torch mount that is included with the CrossFire™ machine (maximum torch body diameter permitted is 1.30").
  • All hand torches use a simple pull trigger to start the plasma arc. When this trigger is pulled, it connects two wires together and once this circuit is complete the machine initiates the plasma arc. If you were to open up the cable going from your plasma machine to your hand torch, you would find these two wires going up to the trigger. In addition, these two wires can also be found by opening up the plasma machine cabinet and finding the two small wires that go from the plasma machine electronics to the torch cable input plug. If you are unsure which two wires are used to fire the torch, we recommend disconnecting the torch and probing the input plug with a multimeter. Probe the input leads around the plug with the two prongs of the multimeter and check for continuity when the trigger is pulled. Once these two input pins are found that control torch firing, it should be straightforward to determine which wires on the inside of the cabinet are used to make this connection to the torch plug.

    On the CrossFire™ electronics enclosure you will find a Torch ON/OFF port with two terminals. In addition, each CrossFire™ machine comes standard with two wires that connect to this terminal block. When the machine controller receives a G-code signal in Mach3 for torch firing (M3), the relay inside the electronics enclosure creates continuity between these two terminals. In order to fire the torch using the machine controller, the two wires from the Torch ON/OFF terminal need to be spliced into the two wires that are connected to the plasma hand torch described above. The easiest way to splice into these two wires is by using the T-Tap connectors (see image below) that were provided with your machine. Simply locate the two trigger wires inside the machine and install one T-Tap connector onto each wire. The T-Tap connectors make it so that no wire cutting or stripping is required in order to splice into a wire. Next, fasten the quick connect onto the T-Tap connector and install the other end of the wire into the Torch ON/OFF terminal block (the order of these wires is unimportant).

    Some plasma machines come standard with a CNC port so that wire splicing is not required. To setup, simply plug the two wires from the Torch ON/OFF terminal block into the CNC input port on the plasma machine. Please consult with your plasma machine manufacturer to ensure that the CNC port can be used in conjunction with a hand torch. If not, you will need to manually splice as described above or use a machine torch with your plasma cutter.

    ****NOTE****: Please consult your individual plasma manufacturer before splicing into machine wiring. Langmuir Systems is not responsible for a voided warranty that may result.

    Image result for t tap connector

  • Yes. The torch mount that comes standard on the CrossFire™ is a universal torch mount and is capable of accepting both hand torches and straight machine torches. The maximum torch body diameter that can be used on the standard torch mount is 1.30". The torch firing relay system located on the electronics enclosure can easily be configured with plasma cutters that are operating a standard straight machine torch. Many of these machines come standard with a CNC port so that wire splicing is not required for automatic torch firing.
  • In order to keep the purchase price as low as possible on the CrossFire ™ CNC machine, we are unable to provide unlocked Mach3 controller software with the basic table price. The trial version of Mach3 is limited to 500 lines of G-code with complete functionality and can be used to cut simple and intermediate complexity parts (many customers may never have the need to purchase unlocked software). Customers have the option to purchase a complete license for Mach3 software during checkout or at any time through our online store (insert link here). After purchase, you will receive a license for Mach3 software in order to instantly unlock the complete version and remove the code line limits. Below are examples of parts that were cut on the CrossFire™ machine using trail software. In addition, you can cut more complex parts with the trial version of Mach3 software by splitting up your code into multiple programs and running each one individually.

    Grill Scraper Architectural Plate Frame Crossmember Plate Bender

  • Yes. The table slats are considered a consumable portion of the table and they can be replaced. The purpose of the slat table is to support the material and to give free area under the part for the plasma arc to cut through uninhibited. We have found that a standard slat pack is capable of cutting thousands of parts before needing replacement. In addition one technique to increase slat lifetime is to regularly rotate slats around the table to even out the cutting exposure (outside to inside). Replacement slat packs are also available from our online store. Conversely, you can cut your own slats from hot rolled flat bar. Each slat measures 50mm x 3mm x 33.0".
  • The CrossFire™ machine was designed to be a fully functional CNC plasma cutting machine right out of the box. Many other smaller machines on the market use a straight gantry system which limits the maximum material size to the span distance between the gantry supports. The CrossFire™ was designed as a cantilevered gantry in order to give complete and open access for material. As a result, much larger sheets of material can be cut on the machine by indexing the material in any direction. We have regularly utilized sheets of material that measure 3' x 6' which would not be possible on a traditional gantry style machine. In addition, programs can be written so that the full travel of the machine is used for the first setup, and then the material is moved a given distance and a second cutting program is started. This process can be repeated in order to cut much larger parts.