3D design and print
3D scan. first i will show you how i did the 3D scan. for this task i will use 123D catch an autodesk app that can run on windows, apple and android phones, this app let us scan an object by taking photos of it in different angles. the more photos we take the more accurate the model will be. to take the photos we have to considerate that the light must be the same in all the angles also placing the object in a reference like a newspaper or a textured base and finally taking all the photos with the same zoom so the object always appears with the same size. You can download 123D catch clicking here the app processes the photos and reconstruct the 3D model. as we can see, the model have a lot of extra parts and there are spaces where the app was incapable of reconstruct the model so we have to edit the stl file to clean it and add the missing parts, to do it i will use meshmixer
you can download meshmixer clicking here
i will errase all the bottom and top extra parts using the plane cut tool that we find in the edit menu the plane cut tool adds a layer that we can place dragging the arrows and clicking on accept we delete the parts that we dont want. using the mirror tool we will reconstruct the half of the helmet that was lost once we have our model edited we export it in stl and we send it to print. here you can find the files that i generate with the different steps i described. click in the titles to download the files 3D scan stl file generated in 123D catch before designing anything in 3D we must know the 3D printer that we have so we have to test it to know which forms it is capable to print. we down load a 3D printer test stl file from the thingiverse web page that test alot of forms.
you can go to the rihno download page clicking here i decided to do a mini basket scupture using 4 heptagons that twist as they go up, the scale of the first and final polygons will change to approach a spherical form,this polygons will be join by a external mesh, finaly every line of the mesh will be a tube to get the 3D model. to do it i will use the modular programing tool of grasshoper and i will finally get the configuration showed in the image below.
you can download my rhino file clicking here
here is the final product this object can´'t be made by subtractive methods because there is no space to fit a tool, even if we use a 3 or more axis cnc milling machine there are closed spaces where we would´t fit a tool, also the shapes of the object make it difficult to fix without damaging it. to 3D print my basket i open the stl file in cura and set the parameters as i will show you in the next screenshot
in the fab lab we have a ultimaker printer so in cura we select the ultimaker 2+ printer i choose the type of filament in this case aBS and the nozzle width for the infill i choose 0 % because the shape of the basket is only made by wires, also for that reason i didn't choose to generate support the printer take 6 h to print the basket and at the end it was a successful print, they were long wires that were bad printed but it was part of the test, even if we know that the wires were to long we decided to print the basket without the support and the final result was good enough. update after i did this week assignement i recive the xbox kinect v2 usb adapter so i tested the xbox kinect to scan myself and i describe the process here to use the kinect as a scanner i use 3D scan microsoft app
i connect the kinect to the pc using the adapter i use a tripod and a office chair to take the 3D selfie. finally this was the 3d scan that i get
ABOUT ME
 3D scan, design and print and object
3D design and print 3D design and print 3D design and print
3D design and print
here we have the pictures of what we got of our ultimaker 2+ printer
now that we saw which forms can be printed and which not we can design something to make that must be imposible to fabricate using other methods to do it we are going to use rhino with the grasshoper module
i install the two softwares and i start designing the model.
you can download the 3D selfie clicking here
ASSIGNMENTS
week five 3D scanning and printing
meshmixer file you can download the test file clicking here
you can download the grasshoper module clicking here
FINAL PROJECT
 3D scan and print
final stl file
you can download my grasshoper file clicking here
you can download the final stl file here
CONTACT

 

Carlos Pérez Ramírez