Prints (1)
Description
The new corexy design is a work in progress but slowly materializing. There’s still much work to be done along with some design decisions/changes to make. See Updates The whole idea is to build a printer that has:
- Modular
- Scalable
- All Metal Parts (or 3d printed)
- Linear Rails
- Balanced Carriage Pull
- Enclosure
- BOM utilizes most available parts
- Z-Axis: Independent Driven or Shared Belt Routing
Modular Platform
The SolidCore design is a work in progress but our long term goal is to is to build a modular platform, not just a printer. Think of it as an ecosystem of parts that can be arranged in different configurations and adapted for unique applications.
- Mods
- Upgrades
- Customized Parts
Scalable
If you noticed the motor and idler mounts to be placed in the corners of the frame. This eleminates any design constraints of overall length and width. So if you need a printer to be a specific size or you already have a frame and rather not cut it down you’ll be able to use it. Eventually we would like to have a spreadsheet or configuration tool that will allow you to input the current frame or linear rails that already own and output length and rail options. Or if you’re aiming for a specific print volume, you can input the data and it will output the frame and rail length options.
The SolidCore is designed to be a highspeed workhorse for repeated use. All-metal-parts and components will give us the durability and repeatablility needed. But we want people to have the option to use 3d printed parts so they can upgrade later on. Solid all metal parts are durable and less likely to deflect at high printing speeds. The aluminum components are also less likely to breakdown over time when introduced to the forces and heat from repeated use.
- High Speed
- Durable
- Repeatable
Carriage / Gantry
SolidCore Carriage
The carriage and gantry are designed to be light weight and strong. We currently use c-shaped aluminum stock because it reduces machining time. The reduced machining time and minimized waste helps but it’s a compromise. Thats going to change soon. We’ll probably make some changes such as reorienting the the y-axis linear rail into a vertical position similar to the RailCore but the current horizontal version will be easier to adapt an E3D Toolchanger. The top plates or motor/belt mounting plates that mount the idler pulleys have recently changed as well. The motor/belt mounting plates shown position the z-axis motors on top vs the bottom of the machine. When I first designed the plates I thought it would look cool with the motors on top but after I machined everything I realized that moving the bed up and down could cause deflection in the main plates.
The left motor plates are going to be re-machined to give room for a tool changer setup.
The overall footprint of the machine relative to print volume is somewhat excessive. In order to have a solid enclosure design I had to move the motors inside the frame boundary. This sacrificed the overall printer size to print volume ratio.
We’re aiming to balance the pull to the center of carriage instead above it or below. It seems to be more rigid and minimize deflection. The belts are somewhat within the same plane of the three linear rails to avoid rocking cantilever loads that other designs may have with the belts up high or down low.
At the moment the current build volume is about 350mm x 350mm x 350mm. After we make next set adjustments and assemble the next updates we’ll be looking at 400mm and a 500mm build plate.
This design was inspired by the RailCore, HEVO, D-Bot, Mike Fisher’s QuadRod and Maarten van Lier’s corexy build.
Extruder Carriage
BlTouch Hotend Mount with Probe Step
Modular Hotend Mounts
Bltouch hotend mount
Motor Mounts
CoreXY Kit
Z-Axis
Z-Axis Bed Mounts
The SolidCore has two different z-axis designs. The SolidCore picture shown on this page has the z-axis motors at the top of frame.
- Independent Driven Z-Axis Motors (On Top)
- Single Z-Axis Motor (Bottom)
Both z axis designs use 3-point bed leveling (3-lead screws). The image below is of the prototype build which uses 12mm ball screw. The new design (yet to be shown) uses lead screw.
Z-Axis Lead Screw to Bed Mount
We've had a lot of inspiration from some of the best corexy 3d printer designs:
Voron 3D Printer
Jubilee 3D Printer
RailCore 3D Printer
SecKit 3D Printer
HyperCube Evolution
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