Bajdi.com: Arduino electronics and robotics

Time 2020-11-17 08:03:23

Web Name: Bajdi.com: Arduino electronics and robotics

WebSite: http://www.bajdi.com

ID:118673

Keywords:

Arduino,com,Bajdi,

Description:

3D Printer extrudersBy admin on 06/06/2016 3D printer extruder reviewEnd of last year I decided to build a new 3D printer. At that time I already owned a very cheap Chinese Prusa I3 printer, it worked, but wasn t a very reliable machine and it was dead slow. As I did not want to reuse any of the cheap Chinese parts of my old printer I decided to build a completely new machine using better parts. My goal was to build a reliable and fast machine.I bought a P3steel chassis from a Spanish webshop, which turned out to be a very good base for a Prusa I3 style printer. It s rock solid, easy and fast to bolt together and you need very few 3D printed parts. I bought Kysan 1124090 stepper motors for the X/Y axis, and 2 stepper motors with 8mm lead screws for the Z-axis. For the hot end I choose the popular E3D V6 for 1.75mm filament, with the bowden addon. Several people had recommended I go for a bowden setup if I wanted a fast machine. For the electronics I used the standard Arduino Mega + RAMPS setup with Marlin firmware. I put it together over several weeks as the various parts arrived. The last part to arrive was the extruder, which did cause me a bit of a headache What is printing fast? 100mm/sec sounds fast, but when your printing 0.1mm layers with a 0.25mm nozzle your only extruding 2.5mm³/sec. That is not hard on the extruder or hot end. Compare that to printing 0.25mm layers with a 0.4mm nozzle at 100mm/sec, then you are extruding 10mm³/sec of filament. It is a huge difference for the extruder and hot end. I bought a 0.35, 0.4 and a 0.6mm nozzle for my E3D hot end. Printing 0.4mm layers with a 0.6mm nozzle is very hard on the extruder.You can slice a 10mm cube at 1000mm/sec in Cura or slic3r and successfully print it. Just set the acceleration in the firmware of your printer to a really low value (So far I have only printed cheap Chinese PLA and Filaflex filaments, as I can t stand the smell of ABS. But I would like to try PETG in the near future. I have 14 different colors of PLA in stock, I switch filaments a lot so an extruder that lets me switch filaments easily and quickly is a must for me.I had not spent much time selecting an extruder. I had searched on Aliexpress and Ebay if there were any deals to be done and had found several cheap extruders from China. Worth a try I thought I m not so sure anymore, in the end I tried more then half a dozen extruders to find a solution that satisfied my requirements. I quickly realized that the extruder is one of the most important parts of the printer. Going cheap here is a bad idea. I m in no way a 3D printer guru. The following words are just my experiences of the various parts I tried out. I m sure I made many mistakes along the way, but that is how we learn.I spent hours printing test parts, trying out different printer parts and firmware/slicer settings. My favorite test print is the 3DBenchy. I mostly use Cura to slice, and have recently switched to version 2.1 beta.Here is my armada:3DBenchy armadaI have lost count how many 3DBenchy s I have printed

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