Aug 31, 2015

3D Printing Complex Data Sets of DNA, DEM and Sound

Here is a compilation of few detailed guides on how to design 3d printable objects from complex data like DNA, topological maps and sound.

How to get 3d printable objects from 23andme raw DNA data set

With this tutorial you will be able to take raw DNA data from 23andme DNA analysis and model a 3d printable object in OpenSCAD with a custom plugin.

Detailed guide and software: 3dna code for OpenSCAD

How to 3d print geographical maps, topology, landscape and other geographical data

3DPrintingNinja developed an Instructables tutorial on how to convert DEM (digital elevation model) data into 3d printable objects.

Detailed instructions:

Sonic Sculptures

With this free app you can get 3d models from visualized sound waves.

Download the software and get the instructions here:

Aug 30, 2015

ToyRAP 28BYJ-48 Motor Based RepRap

ToyRAP is a new project which is based on 28BYJ-48 stepper motor making it extremely cheap, it can be built for some 75 euro. It is aimed at education and demonstration purposes.

Project description and technical specifications:
ToyREP is a tiny and inexpensive FFD 3D printer designed mostly as a technology demonstrator or child's toy.
The print volume is 100x100x100mm (125x125x100mm with some upgrades) with a cold bed made of polyacrylate.
Hot end is a E3D clone for 1.75 PLA or ABS filament with 0.4mm noozle.
Using very cheap 28BYJ-48 stepper motors (with Bi-polar hack) in all axis and geared extruder, Arduino Mega 2560 with Ramps 1.4, DRV8825 and modular RepRap construction based on Mendel, Printerbot, Cherry, Prusa i3 and CARP Box ideas.
It is designed to use 12V 40W PSU for LED lights that should fit under bed. Power consumption is currently ca 40W when heating hotend and 15W-20W when printing (Eventually 40W 100x100mm heat bed would rise PSU requirements up to 80W.)

There are many future upgrades planned:
  • LED PSU mount and cover with switch for size 111x78x36mm and 129x99x38mm
  • Frog for print area 125x125mm - uploaded to ToyREP.
  • Bowden extruder mount - uploaded to ToyREP.
  • ZMAX without 608ZZ bearings (to prevent wobbling) - uploaded to ToyREP.
  • Coolers for stepper motors and different motor mount 
  • 40 teeth T2.5 pulleys (require also major changes in frog, carriage, X1 and X2) to achieve higher print speeds (around 25mm/s)
  • Make X1, X2 compatible also with M8 threaded rod or belt driven Z axis instead of threaded rod to speed up Z movement.
  • Adjustable legs
  • 40W 100x100mm PCB heatbed
  • Direct drive extruder
  • Cooler and lights around noozle
  • Fan mount to cool stepper drivers
  • Mount compatible with Prusa Mendel vertical carriage

ToyRep video:

All the files and instructions can be found at:

Windows 10 and 3D Printing Features

Here is the Microsoft presentation on all the new features and developments in Windows 10 related to 3D printing. It describes new workflow, apps, API, drivers and new 3MF format.

Full presentation:

3mf format homepage:

How to Use Wax to Make Your Parts Waterproof

Instructables user Jubal117 developed this finishing method where he uses wax dipping to make a 3d printed part waterproof. It will make it float or usable as liquid container. Molten wax fills the cracks between layers and makes it into full envelope.

Using a scalpel blade to remove excess wax

Full tutorial can be found at:

DIY Savonius Wind Generator USB Charger

Here is an interesting simple wind power project of a small handheld wind powered Savonius turbine that charges your devices via USB port.

It has 3d printed housing and wind turbine with few electronic pieces and a small DC motor for a generator. The motor could be salvaged form old broken electronic devices.

It could probably be used outdoors in natural wind and indoors as a harvester on a AC unit. There are not many tests on it but it could be improved even if the original design doesn't work.

All the files and instructions:

Aug 22, 2015

OctaWorm Octahedron Robot

OctaWorm is a deformable octahedron burrowing robot that is currently powered by air pressure. It is developed by Juan Cristobal Zagal and has many 3d printed parts. The design enables it to move in very confined spaces.

Here is a video showing its abilities and a development path of OctaWorm from early hydraulically powered prototypes:

Here you can see it moving trough a pipe:

Project homepage:

Extensive paper on the project:

Hopefully Juan will open source the designs :-) Great work Juan!

Printrbot Printrapp

Brook Drumm presents Printrbot Printrapp, a new control software with web interface. Looks good and simple.

Aug 16, 2015

Functional 3D Printed Stepper Motor

Proto G published his detailed guide on how to build a 3d printed stepper motor. It is probably not as good as standard ones but it looks very usable for simpler projects.

You will need an Arduino, copper wire, magnets and other non-printable parts but you probably guessed that part.

Here is a video introduction:

Detailed build guide and all the files needed:

Great work Proto G!

Pentarod 5 Axis 3D Printer

Øyvind Kallevik Grutle developed his own 5 axis 3d printer based on RepRap Ormerod where he added additional A and C axis.
Our community is stuck for too long in standard 3 axis design and we need new multiaxial machines to move forward.

Here is what he writes about his project:
This is the result of my master thesis at the University of Oslo, at department for robotics.
The printer is a modified RepRap Ormerod, with two added axis (A and C).
This master thesis have been a proof of concept, but since it was working I decided to try two hypotheses, is it possible to print without support (what you see in this video) and is it possible to make a smooth finish on a surface which are in another plane than the xy-plane (what you see in the two other videos).
All the g-code for these parts are basically hand written (with the help of java). I have been using spherical coordinate system to compute the paths and therefore all the parts are round.
With the exception of the 5-axis system that moves along the y-axis almost all the parts are from the RepRap Pro Ormerod 1.
The videos are at 40X speed.
Hopefully he will open source the build plans soon.

Pentarod in action:

For a more professional five axis machine see:

Source and more information: