Class 2 : Digital Bodies

Scan my body in 3D to create a model bust on my measurements.

To make a good model? Follow a circular path and stop when taking pictures. You need to move the device itself, it is insufficient to move the target object. And Obviously, you need someone else's help to take the pictures.

An environment with a net fund and you must take the time to stop for each photo every 40cm around the body.

I take 20 pictures and the result is pretty fine with bark details, shadows and light on tree.

you can click once and twice on it to see the animated Gif.

Application Android Scan3D The export is possible in .stl, .ply, .obj, .pcd.

I test Fusion 360 for the first time, it's difficult to understand how the object can be moved in the 3D space - So I try several possibilities -

First, you have to go in nav bar on insert > insert mesh to import your 3D Scan in .stl.

Then, you can select parts of the object and in the nav bar on Modify > Remesh it to smooth the surface.

I was just trying to keep the bust and not the head, the arms and the lower body. So I selected all the parts that I wanted to delete. (clic on suppr button).

but my object was empty and Slicer Autocade couldn't work on an empty form so I kept the entire object. I decided to try netFabb. I could selected and cut a part keeping my object full.

You can move your cut line with 3 axes (in blue on the screen picture).

Vision of the back body, the blue slice is positioned so as not to cut also a part of the hip.
On the left, in the context frame, select: Cut all part and right click on the sphere icon. You select the part and delete it. the orange part is the selected area will be deleted.

Vision of the back body, the green edge is positioned to cut the bottom of the pelvis along the y-axis.

The Rotate Parts menu allows you to configure the rotation of the 3D object in space according to the x, y, z axis. Here, you can see different parameters to move you object and rotate it.

The object must be positioned straight along the axes so that it can then be cut into perpendicular slices on the ground.

Export the file in. stl to open it under Slicer.

I Import my object in Slicer (Carrefull, you have to choose your axe before open it for have you object in the right sense = Top and Down)

you can see on the right, the cut is in red = this informs me of a problem, the size of the model is too big for the support.

naviguer

I modified the size of my object for have the entire object in the final support.

the final object appealed to me, especially the side section which made it possible to see the different layers drawn. Aesthetically it was interesting but I wondered how I was going to make him stand up and be able to dress him…

settings Manufacturing

personal options

I tried the curve construction technique by count and add a curve number. You can add or delete slices.

a curved line with several anchoring points on the body allows the slices to move precisely.

in curve with custom slice distribution, you can add or delete and move slices.

I tried the Interlicked Slices construction technique by distance.

Customize Manufacturing Settings

This mode allows you to adjust the bottom of the cut layout to the dimensions of the laser Fusion M2 d'Epilog.

In the upper left hand corner, choose from the drop-down menu The laser cutter that suits your cutting needs.

Open the. pdf document.

Select the lines to be cut and choose the width: Hairline option from the outline pen drop-down menu. Hairline lines are configured to be cut.

Choose the option Print or Ctrl + P Go to preferences

Certain precautions must be taken when using the laser cutter. Especially in the case of wood cutting, to avoid fire, the aerator and air compressor are activated.

The test is carried out first on a small piece of the support to try out several settings and cutting parameters.

And check your hairlines cut!

for this model, it takes 3 passes.

The cardboard can ignite with the air call if the cut-out is too close to the edge.

you can press lightly but without moving your support

provides information on assembly steps

When cutting the first bust, during assembly, the boards didn't overlap to the end. the dimensions related to the thickness of the cardboard under Slicer did not correspond to those of the print.

The second cut had the right settings even if it would still require some adjustments, the supports move and some small pieces fall easily.

Clic on the red link to see the documentation of the final cardboard bust :

Final 3D Scan with 3D laser scanner

I did this assignment twice, once with an Android application and a second time with a 3D laser scanner. I made the choice to keep the 2 that complement each other in terms of steps along the process.