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3D Printing

6 Posts authored by: dougw Top Member

MP3 Player Amplifier

Posted by dougw Top Member Apr 24, 2016

I seem to often have a need to test small speakers, but audio sources these days tend to expect the speakers to have their own amplifier built-in. Rather than always having to hijack some other system and rig up appropriate amplifiers and wiring I decided to make a small test device that can directly drive speakers as low as 4 ohms. Originally, I was just going to build an amplifier, but I found an MP3 player with built-in amp for a ridiculous price of $1.78 with free shipping so this is what I built....


MP3 Player

MP3 Player Lid

MP3 Player Chassis


3D Printed Phaser

Posted by dougw Top Member Apr 16, 2016

3D printers are great for printing iconic props from the movies. Here is my version of a Star Trek phaser:

If you need the file, let me know.


Triple Gaff 3D Print

Posted by dougw Top Member Apr 2, 2016

The Triple Gaff project is a solution to carrying heavy objects with narrow handles that cut into your fingers.

The Triple Gaff has hooks that grab narrow handles on objects to be carried, but the handle of the Triple Gaff has a large diameter to distribute the load over a larger surface area thus translating the concentrated high stress load from a narrow handle to a low stress load.

The shape is designed to be 3D printed with no support structures.

Triple Gaff

It can prevent finger pain while carrying grocery bags, garbage bags or paint cans.

Plastic Bag Gaff

Paint Can Hook

A paint can puts over 30 psi on the fingers, which is enough to cut off circulation and if carried for any length of time will become painful.


Robox to the rescue

Posted by dougw Top Member Dec 25, 2014

Christmas day - my daughter closes the car door on her coat which has her cell phone in the pocket. This kills the phone. I happen to have an slightly older unlocked phone that I use less than once per month so we simply swap SIM cards right? - but the cards are not compatible. She has a Micro SIM card and I have a Mini SIM card. It is Christmas Day, so no stores are open to buy an adapter. But Wait, I'm just road testing a Cel Robox 3D printer - why not print off an adapter. Great - 3 minutes later I have clear PLA micro to mini adapter and instantly the old phone has all my daughter's contacts in cool is that? - awesome.

So suddenly everyone is a big fan of the new 3D printer.

Merry Christmas is back on!


I have been road testing a Cel Robox 3D printer for a few days now and having a great time exploring the possibilities and printing interesting items.

In keeping with the season I thought I would print a star for our Christmas tree. It came out great, so I stuck it on a plastic rod so it could be secured to the tree. However as soon as my granddaughter saw it she immediately transformed it into a magic wand and it never did make it to the tree. The great thing about having a printer is that you can just print another one, so I modified it a bit and reprinted.

Both stars are printed with "clear" PLA and both designs have embedded light pipes in their design which are visible in the picture below, even though internal lighting has not been added yet.


Here is a shot of the Magic Wand:


You can see my review of the Robox here:

And some other 3D printing projects here:

Tangible Badges - The 3D Tangible Badge Project

and Here:

Tis The Season For Arduino

and here:

Sudden Impact - Crown Tools and Heart Reactor - updates 1-39

and here:

Robox to the rescue

and here:

Enocean 3d Printed Cases

element 14 bestows prestigious badges on members, with different badges signifying various accomplishments.

This project is an attempt materialize these badges, but rather than simply printing out a colour image of the badges this project will design and print 3D medallions.

To showcase the various badges on the desktop, a business card holder was designed that can accommodate up to 6 medallions, one in each of the circular pockets.

Here is an image of the card holder and some images of typical 3D badges:


Hopefully it will be obvious which badge each of these 3D objects represents ....




These objects were designed in 123D Design from Autodesk.

Here you can see some animations of the objects...


Is there any interest in having element 14 supply such medallions?

What size is big enough to showcase the accomplishment without being too ostentatious?

Here is a picture of a first attempt to 3D print the badges - I did not select the correct fill factor, so some parts are not filled in properly - I will post better versions as I get them...and maybe add a little paint.


Update: Here are the same prints with a little paint on them:


These were printed using a Cel Robox printer - you can view my video review and some other prints here:

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