how is the aluminium plate bonded to the PCB for best heat transfer? Double-sided tape? (I guess it's possible lol) Epoxy? They use a thermally conductive dielectric How does it cope with differential expansion? That would depend on what your requirements of your board. Are you talking about out-of-plane from vias (usually minimized by thicker copper plating, thinner board, materials) or delaby CPS - Developers
That could work for colder fluid mixing since it would lower friction at the mixing stage, but for our purposes of melting the plastics, heat from friction won't be too much of a hinder. The source of friction that we may want to reduce would be the mechanical components (to reduce wear not to reduce heat). Edit: and also magnets would be bad for the hot end because of the extreme heat, I wouldnby CPS - Developers
The big reason for using both black and white is that it is going to be darn near realistically impossible to get black from 3 primary colors. it is part of the reason you have a black ink cartridge in your printer instead of of just cymk (besides the fact that black ink is cheaper). It would also make the color-mixing software more complicated if you wanted to print in grey or even darker colorsby CPS - Developers
You could use heatshrink and cable sleeving, which could make it look AWESOME Also use connectors for everything (I dont suggest power supply motherboard connectors, molex connectors, or sata connectors, they could get bulky; use ones that have very close spacing and use the crimp pin things) I haven't tried 3d printing the connectors though (try for 0.05" pitch or less if it's doable)by CPS - General
Do you know about how much it would weigh, it seems like it would be heavy, My idea was almost exactly the same except what you have colored green, and just have plastic tubes feeding in the filament. I really like your idea about the color switching, but could u do the same thing with just the color mixer, pull back the other 5 colors?by CPS - Developers
yea saw it, but the goal here is to make homogeneous color mixing (maybe possible to have it as an option)by CPS - Developers
Could you give some more information? Nozzle size? How are you mixing it? etcby CPS - Developers
there are many videos on youtube that show how to make graphene, it's not that difficult (prices on that website are ridiculous)by CPS - General
Just in time for spring break .... well after it's over lolby CPS - Developers
I'm looking forward to it =) I want to control 100 stepper motors DUH!, nah probably 10-12 is enough (Build a 5-axis 3d printer, with multiple extruders) I'd say a 12V power supply would be easier to get than a 24V Would need heated bed and thermisistor probably is a better name but idc, name it w.e microstepping would be useful to have Try to make it into 1PCB? I think you should go with the beby CPS - Developers
Yea i don't really like the marker idea either for various reasons YAY good news =) how long till you think it will be done (i can etch and assemble, any1 tried using silver or graphene ink for pcb's yet?) Aww why no heatbed + thermistors 2 important things that's needed on every awesome 3d printer pcb, looking forward to it though.by CPS - Developers
bare minimum i guess: has to be able to at least run at least XY (for diagonal movement, cant print tiny right angles lol)+ 4 extruders (for color options, maybe 5 not positive) at the same time, i'm not sure if Z axis has be available at the same time as well. The other extruder head with infill should be able to be multiplexed without printed part design issues Anyone have success in multiplexby CPS - Developers
That is what I am trying to achieve, but with 5 colors +infill because you need both white and black (C+M+Y=grey'ish, injet printers use white paper so you would just need CMYK to get most colors), if you would like to contribute, post onby CPS - Reprappers
You could make a mechanical manual pick and place machine, and you wouldn't need any electronicsby CPS - Pick-and-Place Electronic Assembly (and robots!)
Not using markers at all. BTW it only has 5 independent motor driver outputs (the 2 Z axis aren't independently controllable) Need more than 6 motor driver outputs, need 10+; I can make the pcb, if I knew the circuit and BOM. (ofc compatible software) I have thought about 5-axis later on(6th axis won't be used as long as it is being built up layer by layer), but I believe infill would solve mosby CPS - Developers
Maybe could use normal reprap electronics, but hook up another micro controller to the extruder controls on the pcb, does anyone have experience? either that or modify a current board to a microcontroller with more I/O pins and add extruder drivers and update firmware?by CPS - Developers
two of those boards together won't be enough (only 4 steppers on each board, and at $150 or so each!) I would really prefer to use 1 etched board than 3 of these things and have all those extra endstops/temp controllers, How much of a redesign would it be?by CPS - Controllers
Could someone find/design a pcb to support 10+ stepper motors(including microcontrollers and such), along with other essentials for 3d printing. (XYZ, RGBWB, Infill, mixer, maybe 1-2 more for expandability, heating element, temperature controls, end-stops, SD-card, usb) Q&A's for questions that I KNOW people will ask: What is this for? multicolor 3d printer What is XYZ? X-axis, Y-axis, Z-aby CPS - Controllers
If you don't want to talk about it, then you can talk about something else?by CPS - Developers
yea way too expensive I know, especially half of it down and you won't know if/when u'll get it ( On ebay, 0.25mm nozzle: Assembled hot end 0.25mm (says 0.2mm also but idk): Color mixing before going into the exit nozzle on the hot end, wouldn't it not matter how big the hole isby CPS - Developers
Xeed 3d printer uses a 0.2mm nozzle: What do you suggest?by CPS - Developers
Where is a RAMPS board that supports 10+ motors along with temperature control, etc. And how much is it including all boards for the motors and such. Each stepstick driver is $9.50 on amazon = $95 (maybe i'm missing bulk pricing idk) just for the drivers (doesn't look like RAMPS board has enough pins). Still seems making pcb would be much cheaper (not hard to do either). There is 100µm nozzles iby CPS - Developers
Does anyone have any pcb designs of stepper motor drivers and controller boards (don't know about servo motors yet, possibly could use those?, dc motor probably enough for mixer because it will probably be enough to mix it same speed maybe/maybe not) and considering the price of some of the price of the pre-made ones for simpler repraps, I don't want to empty my bank account just for the electronby CPS - Developers
1nanoliter (why necessarily nanoliter needed?)= 100µm x 100µm x 100µm (a 22" monitor @ 1080p would be a 248µm x 248µm for comparison) and btw inkjet uses picoliter volumes but we aren't 3d printing with just ink, with using inkjet you also have to guarentee that it will mix homogeneously with the plastic which is probably why current color 3d printers use resins. I'm thinking printing with colorby CPS - Developers
For most prints it is not needed to "turn colors on a dime" because there is a lot of infill that you simply don't see. For rare cases where there simply isn't enough room, a "waste" structure can be built. The waste structure doesn't have to be waste because it can be anything else, such as infill for another part that you are printing. Yes inkjet would be ideal i suppose but if you are using wby CPS - Developers
Already ruled out nozzle switching (Except maybe for the support) The 2 color mixing has already been achieved by someone else. The biggest problems are the software and the drivers for all the motors.by CPS - Developers
most of the major tv manufacturers print oleds (that is how they make them), they use a 2d printer, just look up on youtubeby CPS - Developers
how about a 3d 100%(only seen 85% but 100% is possible i guess) transparent oled printer with a resolution of 8kx8kx8k, a 3d printer that prints true 3d tvs Any ideas for going about the pcb board that can handle so many motors and how to integrate it into software?by CPS - Developers
what happens if some1 pokes one of the objects u made with a laser, and it all turns 1 color yea, but nano robots are out of the scope of reprap especially nowby CPS - Developers
Similar to the 3-color 3d printer, how about, for the 3 different objects (5 in this case, 1 for each color), but lower the densities of the objects (instead of 1g/s of red for full density, if u want 85% red and 15% blue, for that same area, have the stepper drivers spew out 0.85g/s of red and 0.15g/s of blue) Allow the mixing objects to be concentrated error free on the visible part of the parby CPS - Developers