Sandcrawler 3D Printing Model | Assembly + Active

ABOUT THIS 3D MODEL

Bulky, old, rusty Sandcrawler from the Star Wars franchise surprises the majority of fans with its unusual, cosmic geometry and 6-storey building height. The fictional tank-like vehicle was used by Jawas, the furry humanoids from the desert planet Tatooine, as their transport and home. These mobile fortresses can survive the most extreme environments and have a special magnetic tube for sucking droids and scraping into the special chambers.

The Sandcrawler 3D printing model, designed by our contributing 3D artist, will undoubtedly blow your mind! Apart from the 3D artist’s accurate and remarkably authentic design, you can enjoy the numerous active mechanisms introduced by Gambody Team. The vehicle has several characteristics that make us feel so excited about it. Highly authentic active suspension with movable wheels will guarantee the mobility of the transport. To access the cockpit you have a removable panel. The large ramp can be opened by pulling the levers in the cockpit. Behind the ramp, there is an active salvage crane, attached with a string that allows height regulation of the system. Advanced users have the option to install the engine in the hidden rear compartment. You can even attach the stairs to the opening gantry! A piece of art that you can purchase and start printing right now!

ADAPTATION FOR 3D PRINTING

Sandcrawler for 3D printing is an active assembly model and its moderation and adaptation for different types of 3D printers took the Gambody team 50 hours in total. Various active mechanisms were introduced, and an authentic active suspension for all treads was worked out. 

For you to receive the cleanest 3D printing result possible and minimize the amount of filament needed for generated support, the Sandcrawler was divided into convenient assembly parts.
All assembly parts in the FFF/FDM 1.0 version are provided in STL files in recommended positions that were worked out in order to ensure the smoothness of the details’ surfaces after printing and that the 3D printing beginners won't face difficulties when placing the parts on a build plate. After downloading any model's file you will also receive "Assembly Manual" for FFF/FDM 1.0 and DLP/SLA 1.0 versions in PDF format. We highly recommend that you get acquainted with the “Assembly video” and "Assembly Manual" before getting down to the Sandcrawler model.

The model is saved in STL files, a format supported by most 3D printers. All STL files for 3D printing have been checked in Netfabb and no errors were shown.

The model’s scale was calculated from the length of the Sandcrawler - 40 000 mm. The 3D printing model’s chosen scales are 1/68 for the FFF/FDM version and 1/136 for the DLP/SLA version.

VERSIONS' SPECIFICATIONS

FFF/FDM 1.0 version features:
- Contains 80 parts;
- The printed model is 284 mm tall, 202 mm wide, 593 mm deep;
- Opening power cells;
- Highly detailed cockpit interior;
- Removable panel to access the cockpit;
- You can attach the stairs to the opening gantry;
- Opening ramp with hydraulic extenders;
- The ramp can be closed shut using two locks;
- To open the locked ramp, pull the levers inside the cockpit;
- Highly detailed cargo bay;
- Active salvage crane attached with a string;
- You can install DVD holders inside the model to store your collection;
- Highly authentic active suspension;
- Three tread system options: solid static treads, simple active treads with a two-piece conveyor, complex treads with a segmented conveyor for more experienced hobbyists;
- Hidden rear compartment to install an engine (for advanced users);
- You can light up the headlights, cockpit, cargo bay, under lights, central compartment, etc.; the battery can be stored in the hidden compartment behind the cockpit;
- All parts are divided in such a way that you will print them with the smallest number of support structures.

DLP/SLA 1.0 version features:
- Contains 69 parts;
- The printed model is 142 mm tall, 101 mm wide, 297 mm deep;
- Simplified cutting for the optimal 3D printing process and easy assembly;
- Opening power cells;
- Highly detailed cockpit interior;
- Removable panel to access the cockpit;
- You can attach the stairs to the opening gantry;
- Opening ramp with hydraulic extenders;
- The ramp can be closed shut using two locks;
- To open the locked ramp, pull the levers inside the cockpit;
- Highly detailed cargo bay;
- Active salvage crane attached with a string;
- You can install DVD holders inside the model to store your collection;
- Highly authentic active suspension;
- Two tread system options: solid static treads and complex treads with a segmented conveyor for more experienced hobbyists;
- Hidden rear compartment to install an engine (for advanced users);
- You can light up the headlights, cockpit, cargo bay, under lights, central compartment, etc.; the battery can be stored in the hidden compartment behind the cockpit;
- All parts are divided in such a way to fit the build plates and to ensure that support structures are generated where needed.

You can get the model of Sandcrawler for 3D Printing immediately after the purchase! Just click the green Buy button in the top-right corner of the model’s page. You can pay with PayPal or your credit card.

Watch the tutorial on how to assemble Sandcrawler 3D Printing Model on Gambody YouTube channel.

Also, you may like other Star Wars models for 3D Printing.

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FAQ: 
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Below you can find printing recommendations for Cura, Simplify3D, Slic3r and PrusaSlicer software.

Cura printing recommendations:

These are basic settings that were tested in Cura 4.8.0 slicer. 

The test models were printed on Ultimaker 2, Creality Ender 3, Creality CR-10S Pro V2, Anycubic I3 Mega, Anycubic I3 MegaS 3D printers with PLA and PETG filaments.

Disclaimer: The following printing settings are a recommendation, not an obligation. The parameters can vary depending on the peculiarities of your 3D printer, the material you use and especially the particular assembly part at hand. Each part that any model comprises often needs preliminary review and you are free to tweak the settings the way you find suitable.

Note:
- You can scale up the model (downscaling is not recommended!);
- All connectors should be printed at 100% Infill;
- For all parts of locks (“ge_lock” in “Source files”) you need to change "Brim" type to "Skirt" in Build Plate Adhesion section.

Quality
Layer Height: 0.12 mm (you can also set Layer Height at 0.16 or 0.2mm for 0.4mm nozzles)
Initial Layer Height: 0.2 mm (carefully level the print bed and keep your Initial Layer Height the same as the main Layer Height)

Line Width: 0.4 mm
Wall Line Width: 0.4 mm
Outer Wall Line Width: 0.4 mm
Inner Wall(s) Line Width: 0.4 mm
Top/Bottom Line Width: 0.4 mm
Infill Line Width: 0.4 mm
Skirt/Brim Line Width: 0.4 mm
Support Line Width: 0.4 mm

Initial Layer Line Width: 100%

Shell 
Wall Thickness: 0.8 mm
Wall Line Count: 2

Outer Wall Wipe Distance: 0.3 mm
Top Surface Skin Layers: 0

Top/Bottom Thickness: 0.6 mm
Top Thickness: 0.6 mm
Top Layers: 5
Bottom Thickness: 0.6 mm
Bottom Layers: 5
Initial Bottom Layers: 5

Top/Bottom Pattern: Lines
Bottom Pattern Initial Layer: Lines
Top/Bottom Line Directions: [ ]
Outer Wall Inset: 0 mm
Optimize Wall Printing Order: Check

Compensate Wall Overlaps: Check
Compensate Inner Wall Overlaps: Check

Minimum Wall Flow: 0%
Fill Gaps Between Walls: Everywhere
Filter Out Tiny Gaps: Check
Horizontal Expansion: 0 mm
Initial Layer Horizontal Expansion: 0 mm
Hole horizontal expansion: 0

Z Seam Alignment: User Specified
Z Seam Position: Back
Z Seam X: Average length of your printer’s plate (e.g.”150” if your plate is 300mm on the X-axis)
Z Seam Y: A value higher than the length of your plate on the Y-axis (e.g. 700)

Seam Corner Preference: Hide Seam
Extra Skin Wall Count: 1
Skin Overlap Percentage: 10%
Skin Overlap 0.04 mm

Infill 
Infill Density: 20% (for all smaller parts and for all parts of connectors use 100% Infill)
Infill Pattern: Triangles
Connect Infill Lines: Check
Infill Line Directions: [ ]
Infill X Offset: 0 mm
Infill Y Offset: 0 mm
Infill Line Multiplier: 1
Extra Infill Wall Count: 0

Infill Overlap Percentage: 10-20%
Infill Overlap: 0.04 mm

Skin Overlap Percentage: 5%
Skin Overlap: 0.02 mm

Infill Wipe Distance: 0 mm
Infill Layer Thickness: 0.24 mm
Gradual Infill Steps: 0
Infill Before Walls: Check
Minimum Infill Area: 0 mm2

Skin Removal Width: 0.8 mm
Top Skin Removal Width: 0.8 mm
Bottom Skin Removal Width: 0.8 mm

Skin Expand Distance: 0.8
Top Skin Expand Distance: 0.8
Bottom Skin Expand Distance: 0.8

Maximum Skin Angle for Expansion: 90˚
Minimum Skin Width for Expansion: 0.0
Skin Edge Support Thickness: 0
Skin Edge Support Layers: 0

Material 
Initial Layer Flow: 100%
Printing Temperature: See your filament settings
Initial Printing Temperature: Your filament settings
Final Printing Temperature: Your filament settings
Build Plate Temperature: Your filament settings
Build Plate Temperature Initial Layer: Your filament settings + 5°
Flow: 100% (Important! If you face difficulty printing the model, you may need to adjust the Flow parameter. You may research the topic using the Internet or seek assistance at our Customer Support Team at support@gambody.com)

Speed 

You can increase the printing Speed by 20% when you print simple objects. For small/thin parts you need to decrease the Speed by 25% - 50%.

Print Speed: 50 mm/s
    Infill Speed: 50 mm/s
    Wall Speed: 25 mm/s
          Outer Wall Speed:25 mm/s
          Inner Wall Speed: 50 mm/s

Top/Bottom Speed: 25mm/s
Support Speed: 25 mm/s 
          Support Infill Speed: 45 mm/s
          Support Interface Speed: 25 mm/s
                Support Roof Speed: 25 mm/s
                Support Floor Speed: 25 mm/s

Travel Speed: 80 mm/s
Initial Layer Speed: 80 mm/s
Initial Layer Print Speed: 20 mm/s
Initial Layer Travel Speed: 80 mm/s

Skirt/Brim Speed: 20 mm/s
Z  Hop Speed: 5 mm/s
Number of Slower Layers: 2
Enable Acceleration Control: Check

When printing simple objects, you need to set all Acceleration parameters at 500 mm/s. For small/thin parts you need to decrease the Acceleration by 50% - 70%.

Travel 
Enable Retraction: Check
Retraction Distance: 4-8 mm, 1-3 mm for Direct Extruder (This is the most important retraction parameter. You can find your optimal value of Retraction Distance by printing any test object, e.g. bridges, towers etc.)

Retraction Speed: 25mm/s
Retraction Retract Speed: 25 mm/s
Retraction Prime Speed: 25 mm/s

Retraction Extra Prime Amount: 0 mm3 
Retraction Minimum Travel: 1.5 mm
Maximum Retraction Count: 100
Minimum Extrusion Distance Window: 6,5 - 10 mm
Limit Support Retractions: Check
Combing Mode: All
Max Comb Distance With No Retract: 30 mm
Retract Before Outer Wall: Check
Avoid Printed Parts When Travelling: Check
Avoid Supports When Travelling: Check
Travel Avoid Distance: 1 mm
Layer Start X: 0.0 mm
Layer Start Y: 0.0 mm
Z Hop When Retracted: Check
Z Hop Height: 0,3 mm

Cooling 
Enable Print Cooling: Check
Fan Speed: 100%
Regular Fan Speed: 100%
Maximum Fan Speed: 100% 

Regular/Maximum Fan Speed Threshold: 10 s
Initial Fan Speed: 0%
Regular Fan Speed at Height: 0.36 mm
Regular Fan Speed at Layer: 3 

Minimum Layer Time: 10 s
Minimum Speed: 10 mm/s

Support 
Generate Support: Check
Support Structure: Normal (you can try using Tree Support Structure if you have difficulty printing any particular assembly part)
Support Placement: Everywhere 
Support Overhang Angle: 60° (this parameter can range from 30° to 70° depending on the part at hand)
Support Pattern: Zig Zag
Support Wall Line Count: 1 (stronger support that might be more difficult to remove) 0 (less strong support but is easier to remove)

Support Density: 15%
Support Line Distance: 2.6667 mm
Initial layer support line distance: 2.667 mm

Support Z Distance: 0.12 mm
Support Top Distance: 0.12 mm
Support Bottom Distance: 0.12 mm

Support X/Y Distance: 0.8-1 mm
Support Distance Priority: Z overrides X/Y
Support Stair Step Height: 0.3 mm
Support Stair Step Maximum Width: 5.0 mm
Support Stair Step Minimum Slope Angle: 10°
Support Join Distance: 2.0 mm
Support Horizontal Expansion: 0.2 mm
Support Infill Layer Thickness: 0.2 mm
Gradual Support Infill Steps: 0
Minimum Support Area: 2 mm

Enable Support Interface: Check (generates additional “pillow” on the support structure that leads to a more even surface, but can be difficult to remove in hard-to-reach areas)
Enable Support Roof: Check
Enable Support Floor: Check

Support Interface Thickness: 0.8 mm
Support Roof Thickness: 0.8 mm
Support Floor Thickness: 0.8 mm

Support Interface Resolution 0.2 mm
Support Interface Density: 50-100%
        Support Roof Density: 50-100%
Support Roof Line Distance: 0.8 mm
        Support Floor Density: 50-100%
Support Floor line Distance:  0.4mm

Support Interface Pattern: Grid 
Support Roof Pattern: Grid (this parameter should differ from Bottom Pattern Initial Layer in “Shell” section)
Support Floor Pattern: Grid

Minimum Support Interface Area: 10mm
Minimum Support Roof Area: 10 mm
Minimum Support Floor Area: 10 mm

Support Interface Horizontal Expansion: 0.0 mm
Support Roof Horizontal Expansion: 0.0 mm
Support Floor Horizontal Expansion: 0.0 mm

Fan Speed Override: Check
Supported Skin Fan Speed: 100%
Use Towers: Check
Tower Diameter: 4 mm
Minimum Diameter: 3.0 mm
Tower Roof Angle: 65° 

Build Plate Adhesion 
Build Plate Adhesion Type: Skirt/Brim (For unsteady parts, and those parts that may come unstuck use “Brim”. For bigger assembly parts that have large adhesion area and for all parts of locks and claws that you want to come out clean use "Skirt")
Skirt/Brim Minimum Length: 250 mm
Brim Width: 8.0 mm
       Brim Line Count: 10
Brim Only on Outside: Check

Mesh Fixes 
Union Overlapping Volumes: Check
Merged Meshes Overlap: 0.15 mm

Special Modes
Print Sequence: All at Once
Surface Mode: Normal

Experimental
Slicing Tolerance: Middle
Maximum Resolution: 0.01 mm
Flow rate compensation max extrusion offset: 0 mm
Flow rate compensation factor: 100%

Simplify3D printing recommendations:

This model was tested with PLA material.

To avoid printing problems, we recommend the following settings:

Extruder
Nozzle Diameter: 0.4 mm
Extrusion Multiplier: 0.97
Extrusion Width: Auto

Retraction Distance: 5.00 mm
Extra Restart Distance: 0.00 mm
Retraction Vertical Lift: 0.08 mm
Retraction Speed: 5400.0 mm/min

Wipe Distance: 5.00 mm

Layer
Primary Layer Height: 0.2 mm
Top Solid Layers: 8
Bottom Solid Layers: 5
Outline/Perimeter Shells: 2
Outline Direction: Inside-Out

First Layer Height: 90%
First Layer Width: 100%
First Layer Speed: 20%

Additions
Use Skirt/Brim: Check
Skirt Layers: 1
Skirt Offset from Part: 6.00 mm
Skirt Outlines: 5

Infill
Internal Fill Pattern: Fast Honeycomb
External Fill Patern: Rectilinear
Interior Fill Percentage: 10%
Outline Overlap: 22%
Infill Extrusion Width: 100%
Minimum Infill Length: 5.00 mm
Combine Infill Every: 1 layers

External Infill Angle Offsets: 45/-45 deg

Support
Generate Support Material: Check
Support Infill Percentage: 15%
Extra Inflation Distance: 1.00 mm
Support Base Layers: 0
Combine Support Every: 1 layers

Dense Support Layers: 0
Dense Infill Percentage: 70%

Support Type: Normal
Support Pillar Resolution: 5.00 mm
Max Overhang Angle: 60 deg

Horizontal Offset From Part: 0.50 mm
Upper Vertical Separation Layers: 1
Lower Vertical Separation Layers: 1

Support Infill Angles: 45 deg

Temperature
Extruder 1 Temperature: 210
Heated Bed: 60

Cooling
Increase fan speed for layers below: 45.0 sec
  Maximum Cooling fan speed: 50%
Bridging fan speed override: 100%

Speeds
Default Printing Speed: 4800.0 mm/min
Outline Underspeed: 50%
Solid Infill Underspeed: 80%
Support Structure Underspeed: 80%
X/Y Axis Movement Speed: 10800.0 mm/min
Z Axis Movemen Speed: 1002.0 mm/min

Adjust printing speed for layers below: 15.0 sec 
  Allow speed reduction down to: 20%

Other
Unsupported area threshold: 20.0 sq m

Slic3r printing recommendations:

These basic 3D printing settings recommendations for beginners were tested in Slic3r 1.3.0 software. Test models were printed on Ultimaker 2, Creality Ender 3, Creality Cr-10S pro v2, Anycubic I3 Mega, Anycubic I3 MegaS, Anycubic Vyper with PLA and PetG filaments. 

Note:

- You can upscale your 3D printing models. Downscaling is not recommended - it can make smaller parts of the model unprintable, distort the model’s level of detail and result in assembly issues. 
- All connectors should be printed at 100% Infill.
- When printing Lock connectors, we recommend setting the “Brim width” parameter to 0 in the "Skirt and Brim" print settings. In that way, the Locks will be 3D printed with a Skirt only. 

PrusaSlicer printing recommendations: