3D Testing

Building A Wall

Next Test: Build A Wall 

The File. About an inch long (25.4mm), the width of filament wide (approx .5mm) and 6mm tall.

The File. About an inch long (25.4mm), the width of filament wide (approx .5mm) and 6mm tall.

We wanted to look at the accuracy of the extrusion. What do the ends look like? What does the end look like where the extrusion starts versus where it ends? I was able to take fairly clear photos with my macro lens that allowed us to take a closer look. 

Sticks Astray

I included in this post an image of the sketch up file that I was trying to print, you will then see what actually happened. I think... too small/not enough glue on the build pad.

LightBox + Testing

I built an inexpensive light box using a cardboard box, bleached cotton and a piece of bristol board. I have been doing some tests on photographing the work I am doing in the box, it has been challenging to get the white balance right on my camera but once that was fixed it started coming together.  

I re-printed the 60 degree angle and it printed perfectly. The 45 degree angle had some issues printing the top surface -- I am not sure why.

The 15 degree angle (the steepest yet) seemed to have printed better than my previous 25 degree angle. I would say it is because I made the surface area of the base a little bigger. 


Today I am asking myself: what is the steepest angle I can print without needing supports. 

First I created a wall using sketch up that was too small and the resolution did not hold its form. I also was noticing some issues with the object staying fixed to the build platform while printing.

Then I tried 60 degrees. I created a larger surface area for the wall but was still having trouble with the object sticking to the build platform. You can see below in the images with the arrows that it begins to release at the corner from the platform.

Next, 45 degree angle. Still no supports are needed. I also am getting a better adhesion to the build platform. There are not any corners lifting from the platform. 

Now... 25 degrees! No supports! The underneath (the side closer to the build pad) looks very different from the previous ones. I think it was really struggling to print at such a steep angle. 

Update on 3D systems' Cube

I have been working with the 2nd generation Cube for two days now.

I have downloaded Google's Sketch Up as a way to design my own objects for the printer. You have to download a .STL exporter so that you can send your designs to the Cube software. 

I have printed three objects and I am on to my fourth. The first thing I printed was a design that came with the printer: a tea cup.

photo 2.jpeg

The second and third was a simple design I made in sketchup I have been having some issues getting the surface to be as pristine as I would like.