Jul 7, 2017

3D Printing Parts for Cryptocurrency Mining Rig

Cryptocurrency mining is booming again with Ethereum currently being one of the most mined coins. In many countries graphics cards (GPUs) used for the process are hard to find or are much more expensive. For mining purposes, several cards are mounted on a single motherboard with a riser connector and attached to an open external rig for more space to get better cooling air flow.
Most mining rigs are self-built by the operators who always want to get the best price to quality ratio.

Here are a few very practical 3D printable DIY modules you can make yourself and use in your setup.

Here is a somewhat typical mining rig but all the connections of metal profiles and structural elements (red and black plastic) were 3d printed:

Youmagine project page with all the instructions and files:


If you don't want to keep your GPUs on a riser connected to a rigid frame to get more space or flexible arrangements for better cooling, you can use DIY 3d printed card holders.

MMF project page wit all the files:


Here is a different type of vertical GPU holder with focused ventilation opening:

Thingiverse page:


Using 3d printing to build your hashing beast is a great way to ensure spare and replacement parts and it gives you much more customization options. You can also get various type of fan holders, air flow focusers, PC component holders, and many other components.

If you found something useful in this post or on this blog please support my work with a small donation to any of the following addresses:  

Bitcoin: 1ACR447cwTPEHpqNGBFzJfSXfeaneN6rSD

Ethereum: 0x098Acb18a667fc78992D4E1C2E0eD9A4529467d5

Litecoin: LXjxsSX7dPwfEjh2SZxNQzjq53rS1E2Mk2

Dash: Xns3ds39XzWmZakpkLUAMYng5KKnvKsYfd

Decred: DsTbn5VwioDtsVDoyhem2Xfmi3923okbkjA

Thnx ;-)

If you want to start mining, but don't have the hardware, you can start cloud mining on Genesis for as low as 30USD for a two year period:

Genesis Mining

Jul 6, 2017


Hangprinter is an open sourced RepRap machine that uses walls and other surfaces as a frame. It literally hangs and prints. It makes a build volume an obsolete concept.

Hangprinter presentation:

Here it is a building tall tower:

Project pages:




3D Printable Mortise and Tenon Jig for your Dremel

If you need a cheap DIY jig for mortise and tenon making for your woodworking projects here is a simple 3d printable version that uses a Dremel tool for cutting out the wood.
It was developed by Crafted3D since he needed a cheaper alternative for a 1000USD standard router.

There are a few non-printable parts like a metal clamp, but this is a great low-cost shop tool. You could also design different templates for the shape of your tenon/mortise parts.

Instructables page with all the files:


Jul 5, 2017

3D Printed Boat Propeller by Jaimie Mantzel

Jaimie Mantzel is living on an island in Panama and he is building his own little paradise with his family. He has a lot of interesting projects from solar boat making to dome house building. He documents most of his life on YouTube, his channel is well worth following.

He uses DIY solar powered boats and he makes self-made 3d printed propellers for them.

Modular props with replaceable modules:

Here is the real test:

PDF for boat propeller design:


MAKEzine article about his life and many cool island projects:


Find Jaimie:


Prop in the water

Jul 4, 2017

Big Benchy RC Boat

You like making the 3DBenchy? Now you will like it even more with this project! Kim developed a larger version that can float and has an RC control for a small electric motor. It is 3d printed from several modules and held together with ABS-juice which also makes it watertight.

Video with build log and RC Benchy in action:

Here is the full construction guide:


Thingiverse page:


Very Loud DIY Filament Alarm

Donald Papp developed a simple but loud alarm, "Mister Screamer", that is hanging from your filament and if the filament runs out it triggers a loud alarm.

Key features:

  • If filament is present, nothing happens.
  • If filament runs out, scream your fool head off to alert a nearby operator.
  • Enclosure can be 3D printed
  • Self-contained (no external power or signals)
  • Requires no modifications to the 3D printer to be monitored
  • Electrically simple, and using a minimum of easy to source parts
  • Long battery life, low power usage
  • Easy to turn off when responding to an alarm

Source with the build guide:


All the files can be found at:


3D Printed Molds for Concrete Frame Canoe

Project description:
A research team from ETH Zurich used 3D-printed moulds to make the skeletal framework for this all-concrete boat, which won first prize for design innovation at the Concrete Canoe Regatta.
The boat race takes place every other year on the Rhine river in Cologne, Germany. It challenges participants to create the lightest and fastest vessel, and race it 200 metres without sinking. The competition allows no other material than concrete to be used.
For their SkelETHon canoe, the team from ETH Zurich relied on research that allowed them to fabricate large-scale concrete building components, casting concrete in any shape using 3D-printed moulds.
"With 3D printing we have an almost unlimited geometrical freedom for making formworks, which was not available to concrete so far," said the team's Andrei Jipa. "Undercuts, microstructures, high-resolution details are now possible."
The moulds are made from recyclable plastic, and allowed the team to cast slender "bones" – some of which measured just 15 millimetres in diameter – from steel fibre-reinforced concrete.

Source post with more information:


Jul 3, 2017

ZeroBot is a 3D printable FPV robot based on Raspberry Pi Zero

ZeroBot is a cool little 3d printable robot that is cheap and easy to make. Great for educational robotic projects. You can control it via the smartphone interface and all the software is available as SD card image. I'm making this!!!

Project description:
ZeroBot is a Raspberry Pi Zero W based robot. It can be controlled using any computer or smartphone via a web browser. The integrated camera module makes for a low latency video stream. In addition, the Raspberry Pi acts as a Wifi access point, so no router is required. The parts for the hull as well as the wheels can easily be printed on any regular 3D printer. 
Some of the key features are:
  • Compact CAD design with 3D printed components
  • Analog control via a joystick (and multitouch)
  • Simple battery solution using only a standard power bank
  • Low latency streaming (~0.3s)
  • Easy and cheap to build using widely available components

Thingiverse page:


Hackaday.io page:


Fully 3D Printed Water Pump by Mikes Inventions

Mike developed and 3d printed a fully working DC motor powered centrifugal water pump.
The sealant is the key :-)

Project homepage:


STL link:


Applying sealant to the contact surfaces