Just wanted to add that the price for the BeBoPr++ with the 5 stepper board is INCLUDING 21% VAT and shipping, so you might not have to pay that much. Also a group buy will save you money! (For some reason I can't edit this post, editing is probably time limited?)by Dejay - General
My main ideas for better 3D printing: -Multi color printing with 2 or 3 or 4 extruders to combine colors, create patterns or use different materials (soft / flexible / hard / dissolvable filler) and print complex mechanical parts in one go -Smooth walls instead if the typical ridges, maybe a pass around the edges with a hot pin after each layer -Printer software that can customize a design, adaptby Dejay - General
YABL - Yet another kossel mini build log There are plenty of build logs but this one is mine. The kossel mini seems to be a very well established and stable DIY printer to build, but maybe I'll provide another newbie with some info. Probably the only interesting parts to read here will be my considerations for the chosen design as a first 3D printer and my choice for electronics. As I'm a newbieby Dejay - General
I'm a newbie at this so take everything I say with a grain of salt: When I started I was looking for an XY design like the replicator too because I didn't like the moving print bed, but didn't find anything good. Apparently the CoreXY design is superior to the HBot design because it allows for lower build tolerances. Apparently spectra lines are cheaper and just as good as belts and might even haby Dejay - General
Quotedexterm2003A rubber roller would be good if the rubber coating was really thin. If it gets to thick it will deform and act like a string in the linkage which is not desirable. If it was really thin and the pre-load was relatively high then the it should work really well. Shouldn't the preload required for rubberized wheels be lower that for steel wheels? Also you could have the wheel not tiby Dejay - Mechanics
Quotevw-stylervergiss das mit den gummierten Rädern, wegen Schlupf, Umkehrspiel und so. Irgendein problem wird es damit schon geben, ist ja keine besonders brillianter idee Aber ich frag mich halt warum nicht? Mit ner 1mm harten gummischicht müsste doch die seitenhaltekraft ausreichen, also schlupf und umkehrspiel müsste doch ok sein. Und so ein paar kleine gummierte kugelgelagerte räder in einby Dejay - Mechanik
Hallo, warum werden eigentlich keine gummierten räder für threadless screws benutzt? So könnte man doch die räder gerade auf der glatten stange aufliegen lassen. Kein backlash oder rutsch und man braucht nicht so viel druck. Gibt bestimmt einen grund aber ich bin totaler neuling was mechanik und reprap betrifft. Die frage habe ich auch hier im englischen thread zu threadless ball screw gestellt.by Dejay - Mechanik
Ok first thanks for testing this Cozmicray, I have a couple of (stupid) ideas: Why are steel rollers used? Wouldn't a material with higher friction be better? Why not use rubber wheels that have a tilted outer rim to stick to the outer wall of the rod? There probably is a reason but I wonder, a slanted rubbery surface on the wheels could reduce slippage and reduce the tension required. With theby Dejay - Mechanics
@Cozmicray It's not really my system or anything, it's just an idea so far. I'm really just a loudmouth But there is a free software called "FaceTrackNoIR" that ironically tracks IR diodes on your head using simple point tracking (used to control the view direction of players in video games). @Nicholas You certainly brought some lateral thinking into reprap! I love your designs! I can't wait fby Dejay - Delta Machines
Really interesting read and I love the design of LISA! I've posted a couple of questions in the concept forge forum but I mostly could answer them myself after reading this whole thread. But I was wondering if anyone had any thoughts or ideas for a Kossel style effector mount to be able to change tools or have bigger extruders like a dual / quad extruder (e.g. the kraken)? I guess the simple solby Dejay - Delta Machines
I've read this post describing an extruder that can drive 4 filament with 2 stepper motors: Introducing the Coherent Extruder: A 4 Color, 2 Motor Cold End (github files) Sounds like the way to go to use one stepper for switching what filament to drive and the other to actually drive it. Not sure how it actually works yet though. Anyone tried to use this and has any experiences? Here is the origby Dejay - General
QuoteA2Reading Mr. Wolfs patent will be educational. Looking forward to seeing how a litigation patent attorney has worded his "invention" to be something that one skilled in the art could not have dreamed of. My bet is: QuoteOur Buda-style hot end with several tweaks and improvements make this the best hotend on the market. It is based on the Budaschnozzle 1.1 design by Lulzbot. "We has adby Dejay - General
Ah don't get me started on patents Thanks for the info A2. Gonna have to read up on it later.by Dejay - General
Quotegaryhlucas Probing the bed won't produce flat objects. It'll make the layers parallel to whatever the surface of the bed is. So if your bed is bowl shaped your parts will be bowl shaped, even if all your axis are dead straight and square. Not necessarily. The firmware could potentially even out the surface in the first few layers by varying the height. I found this video interesting where tby Dejay - General
So nobody can appeal or send in prior work before an patent is issued? I hate patents...by Dejay - General
Ich hab auch gerade nach diesem thema gegoogled und diesen guide gefunden der microstepping ganz gut erklärt: So wie ich das verstehe ist der vorteil von microstepping nicht unbedingt präziserere einzelschritte sondern weichere bewegungen, dadurch weniger vibrationen / lautstärke und weniger ruckhafte bewegungen, dafür weniger torque. Ein hybrider "mixed step mode operation" wäre ideal, also beby Dejay - Elektrik & Elektronik
Not sure if this helps, but maybe some of the tricks for 3D distance rendering can be used. At least it contains no divisions or roots, not sure how fast branches are. //Triangular Prism - signed float sdTriPrism( vec3 p, vec2 h ) { vec3 q = abs(p); return max(q.z-h.y,max(q.x*0.866025+p.y*0.5,-p.y)-h.x*0.5); } Or maybe blend some shapes into each other:by Dejay - Repetier
I plan to buy some acrylic glass sheets to make an enclosure for my (planned) kossel mini, and print holders that extrude from the extruders, and cover them up as well as hold the glass plates. Not sure how this will work out though. They should be really light weight. I also want to make an air extraction to avoid micro particles and/or fumes (although I've heard that good ABS doesn't smell at aby Dejay - Delta Machines
Just for posterity, rabbitproto is creating a nozzle using a 10ml syringe to print out conductive paint from "bare conductive"by Dejay - Wire and Thread Embedded Extrusion
OpenJSCad is an awesome idea! I just found this after checking out CAD software for 3D printing and OpenSCAD for the first time. My immediate thought was "this would be so cool for WebGL". Apparently openjscad.org is the current version / better front end using the fork from It even works somewhat with my android smartphone with touch. But the camera controls are aweful. I was able to simply dby Dejay - 3D Design tools
Ok thanks again for the links. You seem to have been thinking about this since 2007! What is the currently most promising technique to print muscles? Some more rambling thoughts: I guess the most simple approach would be hydraulics, but then you need electrically controlled pumps again. But printing an hydraulic actuator is far easier than printing an electrical motor, since good conductive fiby Dejay - Let's design something! (I've got an idea ...)
Hello, I'm new here so I hope this is the right place, else please move to another section. Sorry / Thanks. I just found this article about 3dxtech.com releasing a conductive carbon nanotube filament: [3dprint.com] [3dxtech.com] $62 for a kg. Anyone can explain to me what "Target conductivity for 3DXNano™ ESD ABS: 10(7) ohm/sq surface resistivity" means? Is that "107 Ohm * Meter" (on a 1 squaby Dejay - Wire and Thread Embedded Extrusion
Thanks for posting the links, I guess I have some reading to do!by Dejay - Let's design something! (I've got an idea ...)
Hello, I'm new to 3D printing and am waiting for my Kossel Mini set.... so because I'm bored you unfortunately have to read my stupid ideas Has any research been done for 3D printed muscles? I gather that it's possible to print conductive ABS filament now and stuff like nylon is pretty flexible. So couldn't you print something like two simple spools that can move apart? Something like a squisby Dejay - Let's design something! (I've got an idea ...)
I love this design! Wouldn't something like the Beaglebone Black with an advanced BeBoPr++ or CRAMPS be a better controller for an advanced design like this?by Dejay - Delta Machines
Just a few ideas: Maybe this SkyDelta design could actually be used for 6 degree of freedom? Or rather 5 degrees of freedom. Anyway similar to the sextupteron. So instead of designing ways to keep the wires tout etc you add 3 more stepper motors but can tilt the head instead. Wouldn't be cheaper, but you might turn an engineering challenge into an advantage. PS: Seems Tray already suggested theby Dejay - Delta Machines
I'm totally new to this but what I thought was that the heat from the heated bed is mostly important to avoid warping for the first layers, and not so important for the top layers. Also the heat might stay almost constant moving up, because heat rises and the new layers are hot to start with. Otherwise maybe install an infrared light on the extruder base? Just some thoughts.by Dejay - Delta Machines
Hallo, ich bin neu hier und hab mich erst seit einem Tag genauer mit dem 3D Drucken befasst. Ich würde mir gerne einen Drucker selber bauen, die Delta Drucker (Rostock etc) sehen für mich am vielversprechensten aus. Ein bisschen Basteln und Löten schreckt mich nicht, aber ich hab nicht viel Erfahrung mit Handwerken und elektrischen Schaltungen. Ich bin eher Programmierer (3D Graphik z.B. in Webby Dejay - Allgemeines
Einfach nach draussen leiten? Ich mach mir auch Gedanken um den Staub, deswegen plane ich meinen zukünftigen Drucker mit günstigem Plexiglas zu ummanteln, einen großen leisen PC Lüfter einzubauen und die Abluft über einen Schlauch einfach nach draussen zu leiten. Sicherlich besser wäre ein Filter system zu basteln, evtl kann man einfach die micro Filter von Staubsaugern zweckentfremden. Da ich iby Dejay - Allgemeines