It is not a given that he needs more torqe, that depends on the extrusion diameter, if he prints ,08mm diameter or even 1 mm a nema 17 might be enoughby rkoeppl - General
That was easy : I got a wrong resistor from my dealer and did not check its value before using it. it had 0,2 Ohm instead of 6,8. If anyone else blew his Mosfet (T1, the part close to the heater) i have 9 in Spare - they come in packages of 10. In the meantime I added a 5 A fuse to the powersupply that powers my Gen6. It did not shut down when I blew the mosfet, It did hardly notice, it is ratedby rkoeppl - General
They are, this example was rather to show, that 4mm is readily available at no extra cost. I have not yet tried their material. When ordering 10 Spools the price becomes more reasonable - but then again that is a lot of printing to do. I did not intend to recommend them. The point is rather that you will have to look into other feedstock than 3mm if you build that printer. Thicker than 4mm will bby rkoeppl - General
RS Number 528-8592 is the smaller one of the thermistors you can get from mendel-parts. It is a 100 kOhm NTC made by epcos in Austriaby rkoeppl - General
PLA instead of wax would be fine as lost mold from what i know.by rkoeppl - General
I have a repstrap that would probably have no problem with that weight. It uses two spindles for Z that are driven by dedicated steppers. the spindles can handle a maximum of 90 KG each - so the issue would only be the steppers, if there is an issue at all.by rkoeppl - General
That would be a workaround rather than a solution.by rkoeppl - General
How about using the HDF format, It is well documented and open source. One main field of application is FEM, where it stores both the, the mesh as well as the results, but it can store any kind of data nedded. SALOME is able to handle it well - but any Software based on opencascade should be able to handle it. It could even store the G-code along additional data.by rkoeppl - General
Gen6 has the downside that if a component breaks - which can happen in the beginning you need someone that can solder SMD-components to replace it. It needs an additional set of electronics if you want to control a heated bed. And you need plenty of time to wait for its arrival as mendelparts is quite overworked. On the other hand you get a small and neat board that does all the work for you. soby rkoeppl - General
Good luck with this project. It would be wise to use a heated bed/chamber with that Size.A moving extruder at the top and the platform only moving in Z direction. That way you can have all printed parts and motors outside the heated area. You will probably want to look into larger nozzles ant thicker filament as well. 4mm Filament is readily available for around the same price/kg as 3mm. This givby rkoeppl - General
Laser sintering without a inert gas (Argon or at least Nitrogen) will be a problem. Maybe we should consider a small device to generate the gas? it will of course take a lot of work and some engineering, but also has the added value of making the most important technical gases (CO2, Argon, Nitrogen and Oxygen) readily available wherever you run that machine. Most likely the Linde Process would beby rkoeppl - MetalicaRap
Even if you pick one up to use only with the reprap yor at least do not need to cut any wire connected to it. Regarding Interference: It might be, but I have not noticed any problem with my system at least. i use a VIA C3 on a mini ITX board. currently there is no case at all, because I want to integrate it into my repstrap frame with some printed parts that i can only print when the system is upby rkoeppl - General
from what i found in the forums it runs only with repsnapper, a user in the following thread for instance claimed it an camile did not reply otherwise However I would really like to be wrong about it. I have it running now with my laptop (Opensuse 11.3) and a dedicated system i found in my cellar, a via C3 now running ubuntu 10.04. Next step will be to add heatsinks for the drivers, as i use NEMby rkoeppl - General
I thing rolling it with two rolls that are shaped rigth to give the filament its final diameter and that are watercooled would yield much better results while also solving the start problem. however they are more difficult to manufacture in the beginningby rkoeppl - General
while looking into supopying my Gen6 with power I wondered if the Cables supplying Power to the HDDs of the computer carry the right voltage. In fact they do. So if you need power fast and dont want to cut any cables on you PSU get a Y-shaped cable, cut of the unneeded cables (you only need yellow and black) and you are ready to go, Just connect instead of a HDD. the Molex 8981 connector used theby rkoeppl - General
Resistance of a coil is 0,8 Ohm, they are arranged in pairs. i have it running now using the first pair as coil A and the last pair as coil B while leaving the others unconnected. not sure what wiring that would represent, but as long as it works that is of minor concern. i can always rewire them later. Now I have to adjust the firmware to represent the direction and the number of steps per milliby rkoeppl - Stepper Motors, Servo Motors, DC Motors
Package arrived today, all in good shape. Nothing to complain about. Two things that i do not really like, and that i could have found out before if i had read the description more thoroughly: Gen6 requires you to run repsnapper, and the software packages provided by mendel-parts are only for M*******t W*****s (at least those I could find). Took me quite some time to get it together under OpenSuby rkoeppl - General
Got my shipping Confirmation yesterday, order was from Nov 30. Waiting of course was a pain, but I think it is only fair to say, that 30days for electronics +steppers +all cables finished with connectors + some printed parts (that took the longest) are OK from my point of view. From my own job i know that there comes a point where you are so overworked, that simople things dont get finished any mby rkoeppl - General
Salome is quite powerful indeed. Especially as it incorporates a meshing module and Pre/Postprocessing capabilities for FEM Simulation as well as a python interpreter. Maybe it would be even possible to integrate a plugin to generate gcode directly in SALOME. It is Open source and backed by EDF and EADS, so it will probably stick around for ages.by rkoeppl - 3D Design tools
How about doing the printing in Polypropylene (PP) and using PLA as Support. PP is chemically very stable, so maybe we can find a solvent for PLA, that is non toxic and does not attack PPby rkoeppl - Polymer Working Group
The Idea of adding sand will definitely not work. Depositing small dropplets could work in tgheory, but only under protective Gas or in a vacuum. Otherwise the aluminium develops a coat of AL2O3 which inhibits the bonding together of the droplets. This holds true for most metals. In addition it would be necessary that the drop is still liquid - or semi-liquid when impacting on the surface, so youby rkoeppl - Paste Extrusion Working Group
Thank you! So if I understand it right, these steppers have four coils. All datasheets I have found of the lh2322 series I have found mention that the system can be run bipolar. However i can not find the exact model i have here. Most probably it has been custom made for the producer of said table. So according to reprap.org I would have to find out, which two coils match up. Thanks for pointingby rkoeppl - Stepper Motors, Servo Motors, DC Motors
Hi All! I just got my XY table for the first generation of the ZornStrap from ebay. It was salvaged from an unknown machine ans is equipped with EAD lh 2322 Steppers. They are labeled EAD lh2322-p300a13 and have 8 wires atached. The question is - how do I connect them to Gen6 electronics. From what I found they shoukd be within the specifications of the drivers. The data i found about the LH2322sby rkoeppl - Stepper Motors, Servo Motors, DC Motors