Archive for the ‘3D printing’ Category

3D PRINTING (PART 15)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 First serious failure…After exactly 4 years of regular use, I experienced the first failure which is due to an aged component. Although Peek is a very strong material, it did not sustain any longer the thermal strength which it endured for years. This critical part is responsible for guiding the “cold” […]

100 !

This picture illustrates my production of facial masks frames of the Easter week-end!I never produced that many parts of the same sort using my brave old Vertex printer. So far, I experienced only 2 failures:– 1 part was poorly printed showing gaps and lacks of filament. This problem did occur any more after a careful […]

By all means

By all means let’s stop the covid-19! The heroes are those who stay home, in small flats, with nervous kids, noisy neighbors, low stocks of toilet paper and plenty kindness through the networks. The action men and women keep the ball rolling, feed us, power our phones and care about us. They deserve as much […]

3D prints: Stevenson screen

Building a basic weather station today is simple and cheap thanks to specialized integrated circuits featuring temperature, humidity and pressure sensing. Up to now my favorite is the Bosh bme280; you may easily find it ready for use on small PCBs, easy to connect on any prototyping platform. Adafruit industries is selling a very convenient […]

3D Printing (Part 14)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 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 […]

3D Printing (Part 13)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 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 […]

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, 15 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 […]