3D printing and scanning

Notes on 2D only... sorry

This week tasks are:


- Test the design rules for your printer(s) (group project).
- Design and 3D print an object (small, few cm) that could not be made subtractively.
- 3D scan an object (and optionally print it).

Class material: 3D Scanning and Printing

Equipment listed below:

Insper FabLab's operational manual here.

Zmorph 2.0SX - extra information here and also there is this first print tutorial online. The slicer Zmorph recomends is called Voxelizer; for tutorials and download click this link.

Mousta Builder - extra information here as Mousta team is a member of Instructables.com. The slicer Mousta suggests is RepetierHost; click this link for download.

Sense 3D Scanner - extra information here. There is a video link in our lab manual that I share here. Other downloads are found in this link; a guide and the software for Windows OS.

Materials:

3D print filament diameter 3.00 mm - that was proper to the toolhead I used. The access the ABS material available at Insper, click here; and for the PLA click here.

Assignment report:

Fusion360 design files Tester object and tube 3d printed.

It's been almost two years since I started to work with 3D printing. It seems to me - more and more - a deception exersice. It is a way to learn how to deal with frustration, develop patience and achieve really nice results after that (maybe).

For this exercise, I had my first try with 3D scanning. It was the same feeling... Sense 3D is the hand scanner we have at the lab. One has to 'grow' the image from real to digital; no rush, no shaking and a lot of: 'lost tracking'.

3D design

The tester file was designed with Fusion360. It has a shape that tests printing with no support, a range of horizontal angles, a range of wall thickness and a range of negative solid 3D print.


-STL tester file.
-Gcode tester file.

3D print tester object.

3D print parameters

Hair spray was the glue used for this 3d print.
- Temperature - nozzle: 240°C - bed: 100°C.
- layer height: 0,1 mm
- printing speed: 30mm/s
- material: ABS 3.00 mm.

The 3D tester model was design with Fusion 360.

It follows some images to document this assignment. It is a way to tell a bit about the work with Fusion360 and Voxelizer softwares.

First sketch

The tester solid.

Angles, curves, holes, briedges.

From Fusion 360 it is possible to create the .stl file. The next picture shows the mesh.

Mesh

Meshmixer is another software that helps me with .stl models. It is good to move, change a bit, scale, cut, slice and rotate the models. I like to test any Fusion 360 model with Meshmixer.

Extra info about Meshmixer: download and tutorials.

Meshmixer preview

Tester - Meshmixer

Working with Voxelizer

It follows the process of importing .stl file from its folder to Voxelizer working environment. Voxel is a word for "pixel 3D". Voxelizer works with pixel 3D. When I hit 'Voxelize' in the software it turns the whole solid into a finit set of many voxels.

I may choose the size of a voxel in a range of 0.5 mm³ - 0.01 mm³. After this process, I follow with 3D printing standart configurations:
- Outline;
- Infill;
- Support - no need for that in this case;
- Raft and other project presets.

The filament I used was ABS - 3.00 mm - yellow.

Import .stl model to Voxelizer

Set voxel size.

Generate voxel solid - set parameters - general

Set parameters - outline

Set parameters - Infill

Set parameters - project

Creating gcode

It is possible to check that the smallest parts are not visible in the gcode image. It means those parts are not going to be printed.

Gcode printing format

The first 3d print attempt wasn't succesful. Error: warp - was noticed. The 3d print was restarted.

3D Printer one

3D Printer two

3D Printer three

3D Printer four - warp

3D Printer five - starting again.

3D Printer five - Results I.

3D Printer five - Results II.

3D Printer five - Results III.

3D Printer five - Results IV.

3D Printer five - Results V.

3D printed model you couldn't have it otherwise.

The model I create do complete this assignment is inspired in Pelicano's model idea. It is a tube.

I printed it with Zmorph 2.0 SX; filament was ABS Ultimaker 3.00 mm. The slicer software was Voxelizer (it is a new version comparing to documentation showed above). I chose a bit raft area to get better grip with the table and had hair spray as adhesive.


- Machine: Zmorph 2.0 SX;
- Filament: ABS 3.00 mm;
- Filament temperature: 240°C;
- Table temperature: 100°C;
- Speed: 30.0 mm/s;
- Layer high: 0.23 mm.

The model itself was designed in Fusion360. An STL file is available here. It follow some images of Fusion360 design and later screenshots of Voxelizer setup.

Modeling with Fusion360. The base was a ring shape and the tube follows the line I draw after applying the Sweep comand - as shown.

Selecting the body with a right click, there is the option of: Save as STL. The solid configuration is shown in the right side of above image.

This is a short movie of the print running.

Some extra information and documentatio of above setup follows with images. It will be easy to recognize Voxelizer's update from the printscreens.

3D printer control display with temperature setup and realtime measurement.

3D printer dashboard display - realtime information.

3D printed tube - first image.

3D printed tube - second image.

1) Select the printer is going to be used form the list.

2) Edit the scene - or how (position, placement over the table) and which quality the object is to be printed.
- click 'Next' and the software will turn and STL file into a Voxel image (pixel 3D).

3) Select material specifications.

4) Verify printing setup - edit 'raft' size (15mm) - or the area printed bellow the object in order to garanty its attachment to printer's table.
- Click 'Next' and the software will slice the Voxel image in printable layer.

5) Check the sliced object that represents the gcode generated.
- If the result is OK - save the code to an SD card and take it to the printer socket. From there, select the file from printer's display and also material preset. Wait the printer to be ready and press "PRINT".
- If the result is not OK, move back to 'Settings' and change material and/or machine parameters. Sometimes, move back to 'Scene' editor is needed also to put the object in a different position before starting to print it.

The Voxelizer, as other slicer softwares, gives an idea of how long the 3D print will take and how much material will be needed. It is just an idea, because it often happens to go wrong and restart is very common (meaning more time and material needed).

There is an option of printing from computer straight to 3D Printer thrugh USB cable. I don't recomend that, 'cause you need to leave the computer attached to the printer till the end of it (or quit in the middle).

3D Scann

This is a nice way to have fun. It is a skill to be develop still, by now I may only have poor results when 3D scanning.

The first day scanning was an exercise of building digital objects from a Sense 3D. Pelicano was trying at first with a chair and later we tried to scann ourselves. It wasn't that successful. Finally, I did scan a table object. It seems like the object emerged from a fire.

3D Scann - Pelicano's chair.

3D Scann - Pelicano's chair.

3D Scann - Myself.

Working on a desk model.

With this exercise I tried to find out what could be done alone with the 3D scanner we have at the lab. I saved the object in many different formats, as the Sense 3D software offered. The files are available here.

it was much easier to 3D scann a small object that I could leave over the table and move the hand scanner around it. If the table's surface has texture and doesn't shine, it will be better to generate a scann image. if the object doesn't shine, it will also help for a better scann process.

3D Scann software - it connects automaticaly to your hand scanner after it is recognized as USB device.

3D Scann - First image created with Sense 3D software.

3D Scann - Editing with Sense 3D software.

3D Scann - Saving with as many extensions as possible.

3D Scann - Meshmixer preview.
- It is clear to me that most of times it is gonna be easier to design the object instead of 3D scanning it.
- Organic forms are more likely to be #D scanned and corrected afterwords in a way the full object is completed faster.




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