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  • Description
  • Approved Materials
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  • Troubleshooting
  • "G-code motion target exceeds machine travel" error

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  1. Tool Areas
  2. CNC Machines

Lead CNC

49x49x6.5" Upgraded OpenBuilds LEAD CNC machine.

PreviousCNC MachinesNextPiranha

Last updated 7 months ago

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Description

Our Lead CNC started life as a kit from OpenBuilds, but has since been upgraded into a much sturdier and beefier machine. It now uses HGR linear rails and ballscrews, making it much faster, quieter, and more accurate. The spindle installed uses standard ER20 collets, and is capable of holding 1/4", 1/8", or 1/16" shank tools. ( for more info). The spindle RPM is computer controlled and ranges from ~10,000-24,000 RPM. OpenBuilds Control software is what sends the gcode commands to the machine.

For beginners, we recommend using VCarve for toolpath generation. We have a makerspace edition that allows our members to download a copy of VCarve onto their home machines. With the makerspace edition, members can do everything except generate the actual gcode files. To do that, the VCarve files have to be transferred to a computer at the makerspace, and the gcode can be generated there.

The work area for this machine has increased to 49.25x48.875x6.625" (1252x1242x170mm). Z clearance over the spoiler board is now 6 5/8" when the Z axis is fully retracted. Maximum material height will be less based on cutting depth, bit length, etc.

Approved Materials

Materials must be approved for use by a tool steward. The following materials are approved at this time:

  • Most woods

    • Hardwoods

    • Softwoods

    • Plywood

    • MDF

  • Plastics

    • Acetal/Delrin

    • HDPE

    • Acrylic

    • Polycarbonate

    • PVC

    • ACM

Use Checklists

YouTube Videos

Troubleshooting

"G-code motion target exceeds machine travel" error

This error may be accompanied by an "G-code locked out during alarm or jog state" error. Check the Console tab in OpenBulds Control for more info.

If this happens while running a program, it likely means that your workpiece/toolpath is too close to the machine extents. To solve this, you will either need to move your workpiece location, or edit your toolpath to not get as close to the machine extents. You can edit the retract/clearance heights in VCarve/Fusion if the Z axis is what's triggering the issue, otherwise you will need to rearrange the vectors/model(s) in VCarve/Fusion.

If this error occurs during probing a tool in the Z axis, the starting position for the probing move is likely too high. Jog the Z axis up small amounts until the Z probe move completes successfully.

If this error happens during an X or Y probing move, the workpiece is too close to the X or Y extremes. You will either need to move your workpiece or manually set X and/or Y zero by sight or another method.

For more advanced users Fusion 360 can also be used to generate toolpaths.

Non-ferrous metals are not approved at this time. If you would like help with a material, or what you want to use is not listed, for more information.

For more information see this page.
ask a steward
Preflight & Shutdown Checklists (and How to Set Work Home Point, and How to Use the Torque Wrench)
ask a steward
Before you are invited to create a Vectric account, you need to have paid the CNC Tool Fee.
LEAD CNC Glory Shot