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Laser Engraver from Discarded DVD Drives with 3D printed Frame

If you have few old DVD drives and an Arduino Uno you can make a simple laser engraver for some 15 USD. The supporting frame can be 3d printed or made from any material you can hack.

Here is the video of the same design with standard frame:

All files can be found at:

http://www.thingiverse.com/thing:375828

Detailed instructions are at:

http://www.instructables.com/id/Pocket-laser-engraver/?ALLSTEPS

Compilation Of Tutorials On How To Build A 3D Printer Or Small CNC From Junk Parts

Here is a small tutorial links compilation that will grow in the future on how to make a simple and ultra cheap 3d printer or CNC from reclaimed or junk electronic and structural parts. Tutorials are very detailed and will help you to start with this technology, educate someone or save some parts form trash.

Beginners junk optical drive DIY 3d printer

Instructables guide:

http://www.instructables.com/id/Complete-newbie-step-by-step-3D-printer-with-all-p/

CD/DVD Drive CNC-3D Printer

Here is another machine made from discarded optical drives it is used as small CNC and plotter.

Step-by-step build guide:

http://www.instructables.com/id/Compact-CNC3D-Printer/

Ad(strap)apto

This is a hackable 3d printer based on common drawer runners or rails. You can purchase them or take them from junk furniture.

Detailed construction guide:

http://www.instructables.com/id/A-low-cost-3D-printer-with-basic-tools/

Rugged and raw DIY style ... it is worth to gut some kitchen cabinets to build it ...

How To Design a Chainring Using Open Source Tools

Rich Olson has another great tutorial on how to design and make chainrings using open source software and low cost CNC.

Here is the link to original post with all the tools and scripts needed:

http://www.nothinglabs.com/chainringgen-making-a-chainring-with-open-source-software/

Rich makes a chainring for his bicycle but they have different uses in power transmission. Beside metal they can be also made on a small CNC from other materials like carbon fiber.

Finished carbon plate chainring for a custom bicycle:

Learn Marlin 3d printer firmware and become advanced user with tutorials by Thomas Sanladerer

Become Marlin expert with excellent tutorials by Thomas Sanladerer. Thomas is well known 3d printing vlogger and his channel is well worth following. It has some great content including testing, guides, how to-s and reviews.

Here is part 1 with introduction and basic concepts such as installing, hardware and firmware:

Here is part 2 where you will become power user and Marlin guru, it covers:

Power-user tips
Advanced options in Configuration.h
Even more advanced things in Configuration_adv.h
Bending the electronics to your will with pins.h
Using custom temperature sensors with thermistortables.h

great work, thank you Thomas!

Simple desktop DIY CNC mill with detailed construction guide

If you made your own 3d printer you will nbe able to make this simple and small desktop cnc mill that will expand your tool options. It can engrave and make PCBs and any other thing you can imagine.

The project is developed by Instructables user liquidhandwash and it is made with 3d printed plastic parts, Arduino Uno, lasercut acrylic plates for frame (hand cut wood looks doable also), NEMA style motors and other simple parts. The spindle motor was recycled from an old cordless drill. There is no exact price but it looks very affordable.

Very detailed construction guide, software and all the files needed can be found at:

http://www.instructables.com/id/3D-printed-CNC-mill/?ALLSTEPS

So much interesting projects, so little time ...

How to upgrade your Velleman K8200 3d printer into CNC mill and drill

Velleman K8200 (or 3Drag) is 3d printer type with many users and with developed upgrade ecosystem. Here is a detailed guide on how to upgrade it into desktop CNC mill / drill machine ideal for PCB milling with simple alterations and attachments to basic model machine. Mill is usually a Dremel or similar multitool.

Detailed guide with all the steps and softwarecan be found at:

http://www.open-electronics.org/how-to-transform-your-3drag-3d-printer-in-a-cnc-milling-machine/

YT user under alias DCM made similar DIY modification to his Velleman K8200 making it into CNC mill and drill with air cleaning and here is video and forum post demonstrating it:

http://forum.velleman.eu/viewtopic.php?f=53&t=10292

Collection of Blender 3d printing design tutorials from beginner to intermediate level

I want to learn how to use Blender more for my 3d printing modeling needs. Here is collection of tutorial videos I found you may find also useful.

Here is simple Blender 3d design for 3d printing tutorial by Jim Craig:

Here is one slightly more complex and detailed made by EcTechTime:

Tutorial by Benjamin Morgan on basic model and Blender setup preparing it for 3d printing:

Here is the entire playlist with many detailed Bender tutorial videos if you want to get into it deeper created by Jason Welsh:

Here is a detailed tutorial by i.materialise about preparing and checking 3d models for 3d printing:

Enjoy learning!

How to 3d scan your prescription eyeglasses lens and design a 3d printable frame

Aaron Porterfield created two tutorials which I as a eyeglasses wearer appreciate. He (and I) often brakes his glasses so here is a solution if you can use some CAD software and have some equipment.

Here is detailed tutorial on how to 3d scan prescription eyeglasses lens by taking photos of a lens covered by masking tape:

http://www.instructables.com/id/3d-scanning-a-glasses-lens/

When you have a scanned lens (or lenses) you can design your custom 3d printable frame:

http://www.instructables.com/id/How-to-design-3d-printed-glasses/?ALLSTEPS

There are a few simple(ish) steps involved, but nothing an average user can't master ...

And here is the final result:

You can print the frame on your home FDM machine but the results will be more rougher. For best quality use a SLS or PolyJet 3d printer.

Great work Aaron!

How to use Filabot extruder to recycle your 3d prints and make new filament

Good people of Adafruit have made a tutorial on how to use Filabot filament extruder to recycle your 3d printed waste stuff. It looks like it is bast suited for organizations who gather a lot of recyclable models. It could save you some money.

They use electric garden chipper to grind the 3d printed waste into a mulch. The entire process could also be applied on any other DIY filament extruder like Filament Factory.

Everything is described in detail at: https://learn.adafruit.com/diy-3d-printing-filament/

Pre-sorting by color and material is key to maintain filament quality and color

Tutorial on how to create molds for concrete objects with 3d printing

I'v been following HomeMadeModern for some time since they have some great DIY furniture projects with wood and concrete elements. Their design is very modern, minimalistic and easy to build.

In this project a better dish for dog food is built. It is curved and angled on one side so the dog can get all the food.
They use 3d printed full size prototype to create a mold and then poor the concrete mixture in.
The results look very good. You could use this technique to create any object in concrete, only limitiation would be the size of your printer.

If I catch some time in the future I'll try to build speaker housing made from concrete similar to P.A.C.O. open source project.

Great project! I like the idea of concrete furniture pieces, I don't have any experience with them, but even the concept seams better then those horrible IKEA pieces. And you can make them as unique as your own creativity.

Video tutorial on how to use Marlin EEPROM functions

You can store Marlin setting directly in EEPROM memory. On each boot, Marlin will automatically load these settings from EEPROM, independent of what your compiled Configuration.h says.

The Marlin EEPROM settings include the following:

Steps per mm
Maximum feedrates [mm/s]
Maximum Acceleration [mm/s2]
Acceleration
Retract Acceleration
PID settings
Homing Offset
Minimum feedrate [mm/s]
Minimum travel feedrate [mm/s]
Minimum segement time [ms]
Maximum X-Y jerk [mm/s]
Maximum Z jerk [mm/s]

Another excellent tutorial by ZennmasterM! He is producing some high quality video tutorials in field of 3d printing.

Here is also an additional post from Solidoodle wiki about Marlin EEPROM functions:

http://wiki.solidoodle.com/using-eeprom

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