How To Scan And 3d Print Large Structures With Polycam Blender Step By Guide

Discover how to scan and 3D print large structures using Polycam and Blender. Learn how to overcome challenges and create detailed 3D models of objects and buildings.

• Learn how to scan and 3D print large structures using Polycam and Blender.
• Use a drone to scan objects like the Valle-Maggia Monolith.
• Step-by-step process from scanning to 3D printing.
• The challenges of scanning large buildings and regular structures.
• Scanning organic objects for the best results.

In this video guide, we delve into the fascinating process of scanning and 3D printing large structures using the Polycam app and Blender. We take you through the steps, from scanning the Valle-Maggia Monolith using a drone to creating a 3D model and finally 3D printing the object. While large buildings may present unique challenges, we also explore the limitations and possibilities of scanning organic shapes versus regular structures.

• Scanning Large Objects

  • The video tutorial focuses on scanning and 3D printing large structures. To get the best results, it is recommended to watch the previous video in the series for essential background information.

• Tools and Equipment

  • To embark on this journey, you'll need the tools discussed in the previous video. Additionally, for scanning large objects, you'll require a drone. The example object chosen for this demonstration is the Valle-Maggia Monolith, a massive 14-meter-high granite block with an intriguing RGB light feature.

• The Scanning Process

  • To capture the Valle-Maggia Monolith, the team begins by flying circles around the block, gradually increasing the drone's height.
  • Additional pictures are taken from further away to ensure full coverage.
  • Hand-held cameras are used to capture details close to the ground and the top of the structure.
  • All the pictures are then downloaded to a computer and uploaded to the Polycam website for processing at the highest setting.

• Challenges and Solutions

  • During the scanning process, issues such as small gaps in large objects may occur. However, these can be resolved by manually editing the 3D model in Blender.
  • It's essential to have some familiarity with Blender or 3D modeling software, as detailed instruction is outside the scope of this video.
  • The scanning process culminates in downloading the GLTF file and importing it into Blender for further editing.

• 3D Modeling and Printing

  • In Blender, the team merges the mesh, ensuring a clean and complete model.
  • The object is scaled to its true height of 14 meters, and rods are added to the lower part.
  • The gap is recreated using the lasso trim tool.
  • To simplify the printing and painting process, the model is split into upper and lower parts, with mounting holes added to ensure alignment.
  • Holes are created for the LED and wiring.

• Printing and Painting

  • The model is imported into a slicer software, and supports are added.
  • Both parts of the model are 3D printed in the same print run, saving time.
  • The finished 3D print is painted to complete the construction.

• Bonus Download the Model

  • Viewers are given the opportunity to download the model for their own use, with a link provided in the description.

• Scanning Large Buildings

  • The process for scanning large buildings is similar, and the team scans Sven Magnus' house.
  • However, achieving the desired level of quality for a model kit can be challenging and time-consuming.

• The Case of Fleischer’s Hotel

  • The team also scans Fleischer’s Hotel in Voss, highlighting that simply scaling a building to a smaller size may not be feasible due to the printing limitations of very large parts. Clever splitting may be necessary but is not detailed in this video.

• Scanning Without a Drone

  • The team attempts to scan the stave church of Borgund without a drone, but the results show significant gaps in the model, rendering it useless.

• Organic vs. Regular Structures

  • The video concludes that scanning large organic or irregularly shaped objects tends to yield better results compared to buildings with regular forms and repeating details. While the latter presents challenges, the 3D scans can still be valuable for further processing.

• What's Next

  • The video hints at the next topic – scanning people – and invites viewers to stay tuned for more exciting content in the Trainroom.

This comprehensive guide provides insights into the world of scanning and 3D printing large structures, making it a valuable resource for those interested in this innovative field.

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