3D-scanning & Polygon modeling

Make correct and 3D-printable files

Mix and blend

all kind of digital 3D-formats and then

Analyze and Correct

it into a professional and flawless 3D-printable file

Preliminary Schedule

  • 3 useful 3D-tools to install

  • Win 10 setting to adjust

  • Some Basic Knowledge

  • Scanning

  • Downloading

  • Make People

  • Easy tools for polygon modelling, mixing and repair

  • School pages for 3D-printing

  • Try to Mix some different 3D-models!

Time:

09.00 to 12.00 Lab/Online Lecture and Q&A:s
10.15 to 10.45 WozzUp, Coffee break, fika
15:15 to 15:45 Coffee break, fika
13.00 to 16.00 Lab/Online Lecture and Q&A:s

3 useful 3D-tools to install

  1. MeshMixer

  1. ReCap

How to make a 3D-model from Photos

3. Netfabb Free

  • Use the old versions like 5.2 or 7.4 they are very old but powerful :)
    Todays version is free for student but, only 30 days..?, and enormous in size

  • Download this free, awesome and very tiny (23mb) tool from our school server
    \\130.239.61.251\uid\public_installs

    • Copy the complete folder onto your own PC and just start it by double click the netfabb.exe file

Win 10 setting to adjust

Show File name extensions in Win 10

  1. Open a Windows file folder

  2. View -> File name extensions. mark it, Enable visibility

Some Basic knowledge

The difference between different CAD-formats:

When are these used?

  • Pointcloud

  • Meshes, Polygons

  • NURBS

  • Solids

Very important GENERAL file formats:

  • STL, OBJ, FBX and (mostly polygons)

  • Iges, Step (mostly NURBS)

3D-measuring technologies

Scan 3D objects and people

Creaform3D

Faro with an Arm

Artec3D Ray

Structured Light

Occipital IPad-scanner

David-3D HP 3D-scan

Arctec3D Leo

Structured light scanning

Borrowing the schools IPad-scanner

Some review sites

How to Scan with the IPad

How to Open the Scanned File

Measuring arm

Microscribe Measuring arm

Microscribe arm

Direct into Rhino

Photogrammetry

Capture with photos

Autodesk ReCap

SketchFab

Many photos

Photo "scanning"

Easy tools for polygon modeling, mixing and repair

Meshmixer Free

MeshMixer Free



Meshmixer Tips & Tricks

  • Check size. Analyze > Unit/Dimensions adjust direct or use Edit > Transform

  • If blue lines, try Edit > Close Cracks

  • Use the "X-ray shader" to see if there is something inside yhat should not be there

  • Edit > Seperate shells to verify that no unwanted pieces exist

  • Analyze > Inspector to make it "solid" (one volume) Friendly to your original mesh

  • Edit > Make Solid A quick shortcut to make things solid but could give unwanted result

  • Ctrl-click two parts and use boolean UNION to merge two volumes (check with x-ray if went okey)

  • Make interesting Voronoi pattern! Very easy

  • Thicken very thin parts and "impossibly" parts. Edit > Make Solid Offset

Netfabb 7.4 Free


Netfabb Free

  • Use the old versions like 5.2 or 7.4 they are very old but powerful
    Todays version is free for student but, only 30 days..?, and enormous in size

  • Download this free, awesome and very tiny (23mb) tool at our Google Share instead here

Always check in Netfabb!

Tips & Tricks

Netfabb Free:

  • Use Analyze

  • And possibly go for an Automatic Repair
    ight-click and save as STL

Meshmixer: Adjust polygon size at intersection before Boolean Union! Very stretched polygons might cause problems. Strive for similar polygon size on both parts at intersection.

    • Use Select > Edit > Remesh > Linear SubDivision

    • Or use a brush. Sculpt > Brushes > Refine

OK result in Netfabb Analyze

Make People

MakeHuman Free

MakeHuman Free



School pages for 3D-printing

3D-printers, Quality, thickness and strength

Some different types of 3D-printers

Info pages: 3dinsider, protolabs, all3dp, Makeanything video

Where can I 3D-print?

How to 3D-print info!

UID 3D-printers

UID:s 3D-printers

Try to Mix some different 3D-models!

Combine NURBS and polygon models for 3D-printing

  1. Add your own NURBS object use Rhino or Alias (NURBS surfaces)

  2. Download and add a Solid model, Surface models or polygon model is ok. Clean it and make it leakage free. One volume (shell)

  3. You can also Scan an object or person (polygons, mesh).Real life scanned data has to be used.
    Use
    Laser scanner, Laser scanning
    IPad-scanner or "IPad-scanning", structured light
    Photogrammetry. Comparasion of photogrammetry softwares

Correct Size!

UNION (not combine) for a 3D-printable file :)

  • Correct size. Able to fit into the machine. (Usually smaller than 300mm)

  • Use Boolean action UNION. Secure a similar polygon size at intersection before union!

  • Check with the "X-ray shader" if there is any internal volumes. It should only be ONE volume!

  • Check for holes and gaps. Meshmixer > Analyze > Inspector

  • Enough strength! Walls has to be from 0.3 to 3 mm depending on machine and material

  • The Normals has to be correct

  • If the model looks rough then you might like to add more polygons. If you have to many polygons then reduce the number of polygons.

  • Export a STL-file (choose binary because it will be smaller)

  • Check the file size! If above 20mb then Meshmixer > Select. Ctrl-a. Select > Edit > Reduce. Max Deviation, Shape preserving

Moving parts

More that can be done :)

  • Make moving parts. Remember to have an "air-gap" between them!

  • Try out the Tinkerplay connectors. Meshmixer > MeshMix > Tinkerplay connectors

  • Prepare the file for different materials on one model. Use the Complex tool.

  • "Borrow" a foot, head or hand for your 3D-model by using MakeHuman. Make a 3D-model and cut off the piece you need :)

Visualize your 3D-model

Some tips and trix with different tools here