Archive for the ‘3D printing’ Category

3D Printing (Part 14)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 The heating plate is made of two symmetric printed conductive layers ~1.5 Ohm each. As printed on the heating plate you may wire them for use with 12 V or 24 V power supplies. As we need to add an extra power supply the choice for a 24 V power supply is […]

3D Printing (Part 13)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 Many PLA rolls were fused in my Welleman k8400. So far, it has been a good servant in spite of few breakdowns, mainly due to clogged nozzle or improper adjustments. Careful cleaning and fine tuning solved all  these problems except one which is my fault. As I was taking apart the fusing […]

PCBs (Part 3)

Part 1, 2, 3, 4 Once we have our gerber files ready, it is time for “printing” the PCB. For a long time (and a long time ago) I used single sided coated copper Bakelite boards. Then I would copy the circuit  on copper using a special permanent ink pen (in negative) and immerse the […]

3D Prints: pen holder

Are you looking for an original present for (next) Christmas ? Here it is ! I made a couple of them for relatives and they loved it, so that I am 100% sure about my advertisement for this 3D printed product ! However, printing the parts might be really challenging because of the heterogeneity of the main […]

PLD (Part 5)

Part 1, 2, 3, 4, 5, 6 HL2 PLD may be used for safety applications too. In this configuration, the PLD is able to detect movements up to 7 m away within and almost 90° view angle. It features a PIR (Passive Infra Red) sensor from Panasonic. This sensors is available in different sizes depending on the required range; the enclosures […]

3D Printing (Part 12)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 3D printing can be tiring for the nerves… For a week or so, I was enable to print full size parts without enduring severe problems such as splitting layers, irregular faces and even gaps. Here is an illustration of the prints before the fix (on top) and after the fix. The first […]

3D prints: USB housing

I had this cheap USB stick that I had to take apart in order to rework the connector soldering. Once the soldering works achieved, I had to think about a quick and dirty enclosure which resulted in this: Two – almost – symmetrical parts. The top one has a bump and a small hole aligned […]

3D prints: Coil

I have multiple projects in mind starting from a metal detector up to a NMR in field earth spectrometer which require one or more coils in various shapes and sizes. Here is the presentation of a double coil, 100 mm diameter, 5 mm thickness. Here is a zoom on the back side of the coil […]

3D Printing (Part 11)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 3D printing is awesome. I am even wondering how I could live without it. I mean, in my professional, domestic and makers life. Before 3D print, I would have used wood, metallic wires, sheets of PVC or even cardboard to build parts in the quick and dirty mode. Just before 3D printing, I […]

DC-motors (Part 1)

Part 1, 2, 3 DC-motors are every where in many form factors, many performances and configurations. The aim of this series of posts is not to cover all aspects of DC-motors as there are so many publications available, most of them being of excellent quality. Firstly, I will concentrate on the most common brushed DC-motors . Next […]