Specs

The following specs apply to the latest 2.1.x version of Jubilee. For a play-by-play view of changes across versions, see the Changelog.

Jubilee V2.1.x Overall Dimensions

Mechanical Motion System Design

• 300x300x300mm build space (with the default extruder). See the Build Volume Tool Relationship page for how tools change the effective build volume.
• All purchased parts called out in the V2 Shopping List.
• Designed such that the Z-axis can be adjusted to your liking with no changes to the XY frame or toolchanging setup.
• Core-XY layout for high-speed printing. Rapids of between 20000mm/min and 30000 mm/min depending on XY stepper motors and heatsinking options.
• Flush-Form CoreXY Belt Pattern. Upper and lower belts are laid out directly on top of each other, and belts only travel perpendicular to the frame. Belt-tensioning is done conveniently with two set-screws that adjust the motor locations along slots.
• Designed with Exact-Constraint machine-design principles where possible
• Kinematically coupled bed plate
• autotramming with 3-point bed-leveling (courtesy of the Duet)
• *Fabricatable.* Almost all fabricated parts are 3D printable. Printed parts are intentionally kept simple and minimize the use of support material. (Exceptions: the bed plate, crossbar, and toolchanger lock must be machined. See notes in the BOM for getting these parts made for cheap.)
• Metric fasteners everywhere.
• Documented with a comprehensive BOM and set of assembly instructions.

Tools and Tool-Changing

• 409mm of horizontal tool rack space, capable of holding 4 default extruder tools
• Detailed Space Specifications for adding custom tools presented in the Tool Interface Diagram (PDF).
• Automatic Toolchanging System compatible with both homebrew and E3D tool plates
• Sensored, torque-based locking system will lock down tool plates with a constant locking torque.

3D Printing

• Stellar print quality with direct-drive extruders. Jubilee can compete with systems at the $5K price range.
• Multicolor Printing possible *without* the need for a prime tower made possible by firmware-driven purge and wipe commands between tool changes. (This feature requires quite a bit of tuning to get working.)
• Slicer-agnostic. All the complexity of juggling tools is handled at the GCode firmware script level. Slicers need only change to a new tool by invoking a *T0*, *T1*, etc. command.

Extensibility

• User Extensible! Jubilee can accommodate custom tools and custom bed plates for specialized 3D-printing and uses beyond 3D printing. (See the Extending section)

Testing

• Cycle-tested. Jubilee has performed thousands of toolchanges flawlessly.

How it Works

Read more about Jubilee's subsystem design in the links below:

• Locating_Tools
• The Remote Elastic Lock
• A Kinematically Coupled Bed

Pricing

• Self-Sourcing parts for Jubilee cost ~$1400 (US). The default extruder costs ~$200 each. We encourage community development for a wider spread of tools at different price points.

Legal

• Completely Open-Source with a CC-BY license. STLs, STEPs, and original Solidworks assemblies are included in the online project repository. Make use of the Jubilee design in ways that suit you.