I am very pleased with the ORDbot Hadron I just finished building, and It matches well with your description. Mostly metal parts, reliable, relatively easy to build. The kit I had from Automation Technologies was good quality with no missing or broken parts. All you need to buy separately is an extruder for this one.by D-Wes - General
when you say it moves just fine at 20 mm/min, how fast is it actually moving? It should take about a minute to move 3/4 inch. if it moves much faster than that you may have the calibration distances wrong. you may be trying to move much faster than the stepper motors can actually handle, and they just can't put out enough power. Try doing a quick calibration. Start the carriage at the fby D-Wes - Reprappers
Thanks! It really has been an incredible experience for both me and the students. More concentrated problem solving, peer teaching and iterative design than most students see in much of their educational careers. By the end of the week all I was doing was playing traffic cop on the printer queues. We met formally for six hours a day for five days, just so you have a sense of our timeline. butby D-Wes - Reprappers
The first day went quite well and the students exceeded my expectations. Most students were able to download STL files, generate G-code and print them on their own by the end of the day. I even had one who printed his own design. They got a lot farther with Tinkercad than I expected, and before too long I was learning from them! You know things are going well when students stick around after clby D-Wes - Reprappers
Monday morning I will be starting a one week long course on 3D printing for a group of a dozen HS age students from the East Bay (Oakland, Richmond, El Cerrito etc.) I am in the process of setting up a website to complement the course with various web based resources for the students to access that will help them to make the most out of the experience. If you have any suggestions for resources pby D-Wes - Reprappers
Thanks, I bought the platform kit from Automation technologies. I just finished building a Prusa Mendel I2 a few weeks ago and I bought the same extruder and electronics for the Hadron. All I had to do was flash the firmware, align, calibrate and level the bed. I got all the bugs out of the system on the I2. The extruder is a greg's/wades with a j-head.Sorry you had to deal with the QU-BD exby D-Wes - Reprappers
Here are the first prints. One is a Ramps adapter and the other is a Power supply cover plate. Both were drawn using sketch up.by D-Wes - Reprappers
I just took my shiny new Ordbot Hadron for a test drive, so I thought I would share!by D-Wes - Reprappers
Quoteciutateivissa cfy7, to be very honest, your extruder body doesn´t look good... From what I can see on the picture your hotend doesn´t fit properly into the slot and never will. I´ve got a black extruder with my kit as well, but it uses a mounting plate which fits a lot better. The hole for the filament didin´t line up in my extruder either, I had to use my milling tool to bring the hotend aby D-Wes - Reprappers
Hi Cfy7 There were several reasons why I chose the extruder. First, it is the extruder on my i2, so I know it well at this point. They use an Arcol Hyena hobbed bolt which has a good rep. The hot end seems to be a good quality. They have changed the way the hot end attaches so that it is a collar/plate rather than two screws. The plastic was well printed and printed to a 70% fill factor. I canby D-Wes - Reprappers
I ordered my kit so that the students I will be teaching in a 3d printing course a week from now would have a chance to build the printer before the course started. I learned a lot about printing from building my P-M i2 and most kids never get an opportunity to do something like that. It would have been enormously valuable to them. My kit was delivered a week ago (late) without plastic parts.by D-Wes - Reprappers
The kit comes with a small amount of Kapton to wrap the hot end, but you may want to buy a roll of tape. I used Ultra copper RTV to secure the heater to the hot end, on my last printer, so that might be handy. Some isopropyl alcohol, windex and a can of hairspray to prep the glass. Make sure your bed is level and your gap is small...by D-Wes - Reprappers
Not having the end stops connected can be a problem, it will stop you from moving towards the switch, but you should be able to move away from them. This sounds more like you need to adjust the trim pots on your stepper drivers.by D-Wes - Reprappers
I usually preheat the bed and hot end manually from pronterface using the set controls in the lower left. If I don't the hot end will not heat up when the print begins. The appropriate commands are there in the gcode, but they don't seem to work unless the hot end is turned on manually. It took me a while to figure out that the default values are editable. You can also send temperature commandby D-Wes - Reprappers
I thought I should share my experiences with DIY Techshop. My first contact was asking them some technical questions about stepper drivers and the like and about whether they could deliver the product on time. I explained that the delivery time was critical to me because I needed to have the printer fully functional for a class I will be teaching during the second week in March. I was able toby D-Wes - General
i had trouble getting the bed on my prusa mendel up to temperature to print ABSI found two things that help 1] insulating around the heatbed 2] placing a towel over the heatbed during preheat. i usually get the bed up to temp before starting the print and then pull off the towel when I click on Print. An enclosure would probably help too. i usually print ABS at 120-125 C on the first layeby D-Wes - Printing