5.3D Scanning and printing

3d Printing

5th week, 5th assignment, 3d printing.....

What is 3d printing? By definition is:"..the action or process of making a physical object from a three-dimensional digital model, typically by laying down many thin layers of a material in succession."

Basically, is the process of adding material to make an object from a digital file

What kind of 3d printers are there? FDM (fused deposition modeling), SLA (stereolithography) and DLP (Digital Light Processing) printers are the most common.

There are also other technologies available in the market, but for cost or because are used for industrial purposes, we don´t have access to them.

Flashforge Dreamer

Flashforge Dreamer is one of the machines we have in the fablab.

This machine, is a FDM type, with 2 direct extruders which can achieve a temperature of 240℃ (464℉) and a heated bed of 120℃ (248℉).

It has an enclosed printing case, so we can stabilize the printing temperature and prevent deformation of the final model.

With this machine, we can use almost every plastic material available in filament format.

The build volume is 230*150*140 mm and has its own slicer, Flashprint.

The model

The assignment for this week is to model and print an object that cannot be made from sustractive methods.

With this characteristics in mind, i decide to model an organic object that can be made in less than 2 hours, with areas difficult to be machined and cherry of the cake....i will print it in TPU95.

I made it in Fusion360 and exported it as a STL.

After exported, i use Flashprint to scale it 50% and sliced it.

I set the temperature at 220°c to the extruder, 50°c to the bed, no supports and an infill of 15%. Also, diminushed the speed to 20mm/s

Print tests

As a part of our group assignment, we also print some useful test to now the capabilities of our machines

We use STL models from Mini all in One, and Calibration cube.

On this tests, we used PLA, 200°c extruder and 40° bed temperature with 15% infill.

And because we have TPU95 allready in use, we test some prints over textiles.

Scanning

Last but not least, i also tried scanning a model....with my cellphone and an app kiriengine.

The results are not great, but with some mesh fixing will probably print it.

Object Link to group assignment