Sandwich200
Release status: working
| Description | A fast, folding, portable aluminum-framed CoreXY printer.
|
| License | |
| Author | |
| Contributors | |
| Based-on | |
| Categories | |
| CAD Models | |
| External Link |
The Sandwich200 is a CoreXY 3D printer that uses a 1515 aluminum extrusion frame. Capable of printing at high resolutions and high speeds owing to its CoreXY kinematics, it produces quality parts that are up to 200x200x200mm in size. In its assembled state it is 490mm high x 460 x 410mm (up to around 550mm due to the bowden tube); folded into its box it is 440mm x 420 x 210mm
Contents
Goal
To design a folding, portable 3D printer using CoreXY kinematics that offers high speed and quality. The printer must be able to be built without specialized tools.
Features
- Aluminum structure based on Makerbeam 15x15mm extrusion
- Stacked variant of CoreXY that eliminates the belt crossing and its associated issues
- Folds up into its own box, dimensions 440x420x210mm
- Box halves are used when assembled to contribute to very good rigidity
- 200x200x200mm build area with heated bed
- All hardware and electronics (except for filament spool) are integrated within the frame.
- Capable of 0.05mm layer height and 300 mm/s printing
- Emphasis on using 3D-printed parts and being easily hackable/upgradeable
- 3mm hotend with a Geared bowden extruder giving very high flow-rates (220mm/sec before skipping occurs)
- Low moving mass — all motors stationary.
- No specialized tools or equipment necessary for assembly (accessible)
Bill of Materials
The BOM is auto-generated (including an accurate count of nuts and bolts required) from the source code.
Printed Parts
Printed parts are available from git clone of http://hands.com/~lkcl/foldable3dsandwich200.
Development
Version 1.0
Initial variant. Uses a non-intersecting CoreXY design to eliminate belt crossing issues.
Issues
- Z-axis issues—slight wobble
- Untidy wiring
Todo
- Cooling fan addition to improve bridging and top speed for small parts
- Convert to 24V in order to increase speed without back EMF
