Archive for November, 2018

CLASS – TECHNOLOGY, 3D Printing

SOFTWARE: Rhino 6, Voxelizer, Polygon, Polulu Master Control

MATERIAL: PLA & ABS 1.75 mm, bolts, screws

MACHINE: Z-Morph, Picaso Designer 250 Pro, Raise 3D

CHALLENGES: To make a 3D-Printed thing


TASK / PREPARATION

The task sounded quite simple: create something 3D-Printed. The teacher suggested making this robot for extra credits. I accepted the challenge.

The robot and all the files I took from the Instructables: https://www.instructables.com/id/EEZYbotARM-Mk2-3D-Printed-Robot/

DESIGN / PRINTING / ASSEMBLING

I transfered all the .STL files into .gcode and Polygon files to use two 3D printers, that we have in lab.

Unfortunatelly, something went wrong with Picaso Designer, that is why there was only one printer left.

PLA on Extruder of Picaso =(

I coninued printing all the parts on Z-Morph. There was a problem with the quality, that is why I got really easy-to-break details.

Low-quality deatil of the base.

The time of printing also was not so good for the details, that is why I had to print them in other places by ABS.

ABS-printed details.

ASSEMBLING / CHECK

After all parts printed, I started assembling all the details together. On the photo of ABS-printed details you can see the assembled base.

Assembling the robot

In 2 hours the Arm was assembled.

Assembled robot.

The next problem was controlling the servos.

I am using Pololu Mini Controller, that needs the outer power supply to have enough voltage to move all 4 servos.

RESULTS / REFLECTION

It was a nice challenge for me and the quality of parts, their brakings did not stop me. I went to different places to reprint the needed details, servos.

Total expendutre on the project: 5000 rubles (including servos, Pololu and 3D-printing).

It is not easy to control the robot with Pololu application. I am going to write an app to control it by the phone via Bluetooth. Also, it is possible to make it work with Arduino.

As an overall result, I have a robot-arm and knowledge of 3D Printing by different printers, connecting the servos and some coding.

The task: Make a 3D model of a useful thing and print it

3D printer: Z-morph

Material: PLA

I decided to make a small flower pot for the kitchen. I started with a sketch of a model in Rhino.

I liked to work on small details of the cat figurine, for example, ears and paws

When the model was completely finished, I created an stl-file and imported it into Voxelizer

When I saw that estimated time is more than 81 h, I decided to change a scale of the model. And she turned from a flower pot  into a stand for egg. Voxelizer calculated a new estimated time – about 5 h. In reality it took more than 12 h.

Unfortunately the paws are printed not as good as I’d like, but ears and eyes are made good. 

And it works now 🙂

Assignment: to do the press-fit smth

Software: Rhino 5, LaserWorks

Equipment: Laser Cutting Machine

Material: 4mm plywood

I started with an idea to make something simple and at the same time functional. Thus, I decided to make an iPhone stand, which could be useful on daily basis. 

I sketched a laconic design consisted of 3 pieces. The angle of the main surface provides convenient usage of the device. It is easier to type, scroll and swipe through content and, last but not least, enables to unlock your phone through face ID without picking it up.

Further, I made a precise drawing of the stand in Rhino 5, which is compatible with a software for laser cutting machine (LaserWorks).

After cutting out the whole thing and trying to assemble it, I found out that press-fit joints are not tight. Apparently, this happened because of the machine’s possible errors. Gaps should have been smaller, while reply part, conversely, wider. Because I did them equal, I had to use a glue to fix this mistake.

↑↑↑(Btw, the ‘less is more’ logo is quite important here – it represents the whole concept :D) 

Eventually, I managed to get it all together and there it is in use!

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