A detailed illustrated list of the most common problems that occur when printing with FDM 3D printers.
This is a housing for a benchtop power supply using the “MingHe B3606” CC/CV module. There are several variants of this module, this is for the 36V/3A 50x66mm version.
It utilizes a Siemens SITOP PSU100S DIN Rail Power Supply as a DC source. And yes, if you have to buy the Siemens supply new this build is not really economically viable. But as these are often available used on ebay for a reasonable price this might still be interesting for some.
Other DIN supplies might fit as well. The dimensions of the used supply are: 70x126x126 mm.
There are three through holes for binding posts. I decided to use the 3rd to lead out the unregulated 24V/10A from the Siemens supply. Alternatively this position could be used for PE.
The printing should be straight forward. Support is required at least for the front cutouts of the module as these need to be quite precise.
The feet are ideally printed with TPU. An alternative that provides very good grip, is to cut fitting pieces of silicone rubber hose and press them in.
The light-guides for the modules LEDs are not strictly necessary but make them less directional. Print with transparent PLA or translucent white.
For the raised lettering on the buttons I switched materials from black to grey during printing.
In addition to the printed pieces you will need:
- Three insulated binding posts.
- A switched and fused IEC socket and two screws to mount it.
- Two short M3 screws to fix the power supply module with the supplied frame to the housing. The screws that come with the module should work for this.
The files are available here: Benchtop Power Supply
Correlated Magnetics developed a printer that is able to “print” magnetic patterns into rare-earth ferrite or flexible magnetic materials. This allows them to code magnets uniquely so that a given combination binds only to its counterpart.
Special patters generate unique functions
British engineers have designed, manufactured and flight tested an Unmanned Aerial Vehicle (UAV) prototype airframe fabricated entirely out of ABS plastic, using Fused Deposition Modelling (FDM) technology.
The airframe comprises of just nine parts, all of which are built using the FDM process: Two wings, two elevons, two spars, two wing end fences and a central spine.
None of these components require support material during the print process. The aircraft was designed to split into two halves about the central spine. This configuration allowed a larger wingspan to be built within the FDM machines build envelope, and made transportation easier. The singlewing UAV has a 1.5 Meter wingspan an weighs in at 2 kilograms.