@sublime also check outby devijvers - General
Check ruben-ikmaak on the #reprap IRC channel. He has lots of motors for RepRap.by devijvers - Controllers
QuoteBillC54 I made the all day journey to Manila and bought my Arduino clone board (only thing available in country) and some microstepping driver cards. Was not till I got home I realised that I do not have a way to connect these together. I 'could' use the fan attachment pads removed from an old motherboard - only they are in another country. So I am faced with another drive to Manila and anby devijvers - General
QuoteTyro The electronics seem very confusing. This document helped a bit with that, but could still use some clarification of jargon and removal/explanation of abbreviations. The software seems like it is in an even worse state for the reprap project, so any info that can be added with this guide is great. I hope that critique is helpful. Thanks for the feedback, I found it very helpful. Boby devijvers - General
About to order myself, this is my BOM: For now projected total of €447 including VAT & shipment.by devijvers - Reprappers
Not commenting on the entire torque story - is still unclear to me - I don't see how cutting the motor torque by half is desirable.by devijvers - General Mendel Topics
Quotenophead The values of the resistors need to close to each other so that means unless you hand select them you need close tolerance resistors. Yes 1% will be fine. Thanks, just one more question: in general, what should the tolerances be for the other resistors and capacitors on the StepStick board? Should they all be 1% or are only these two resistors critical. In other words, is 5% okay foby devijvers - Controllers
@nophead do you mean both resistors need to have the same tolerance, or do you mean both resistors should have low tolerance? I guess you mean both of these statements need to be true. Would 1% be an acceptable tolerance?by devijvers - Controllers
Would also require 3 extra bearings. I don't think a belt on small pulleys would give you anywhere near the precision or torque of the extruder gears. The standard wade gears are 11 over 39 teeth, meaning a torque increase of 3,54:1. I'm assuming your gears will be near 1:1 meaning you'll loose a whole lot of torque. But that assumption on torque probably has to be thrown out the window becausby devijvers - General Mendel Topics
Quoteowism8 So i purchased a adrian extruder from a reprapper and its working good enough, but I have to constantly watch the machine because my Z axis stalls or something if it goes too fast. Do you use springs?by devijvers - General
Thanks guys! For my understanding, which one will be more reliable: 1/4 or 1/8 watts? I think 1/4 watts because of the nominal load (0.2 watts.) @nophead which components do you imply when you say: Quotenophead You want them well matched so that the two coil currents are matched to give accurate micro-stepping. I guess you mean both 0.2 ohm resistors but maybe you mean something else.by devijvers - Controllers
I found these mystery items in the StepStick BOM ( ) that I'm not sure about: 0,2 RESISTOR 0805 SparkFun Is it simply a 0.2 Ohm resistor? TRIM TRIMPOTSMD TRIMPOT-3MM SparkFun What are the specs of this trimpot? And then the biggest mystery of them all: CLONOLU CLONOLU CLONOLU pololu-allegro I have no clue what component this is, I caby devijvers - Controllers
QuoteJoeDaStudd devijvers, I know I'm new to this but wouldn't I need this bar kit (link) @€25 as in includes the smooth bars? This would push it upto about €75+shipping without hot end or the mdf (peanuts I know, but still). Which would bump the price to pretty much on par with the hardware kit I linked. You're correct, I hadn't spotted that one myself. Thanks!by devijvers - Reprappers
I also find the hardware kit pretty expensive. I've found the entire kit without hot end for €66: Prusa timing belts set 12,99 Prusa nuts & bolts set 19,95 Wade Extruder Montagekit 13,95 608-ZZ Bearings 1,49 Rods 11,89by devijvers - Reprappers
The microswitch and thermistor are much too expensive: The RAMPS kit is pretty cheap, are you sure VAT is included in this price? Not too sure about the hot end. Is it any decent? What do other buyers have to say about it?by devijvers - Reprappers
QuoteDeltaFlight I can't import OpenScad stls anywhere too. The only program that accepts them is Blender, so I import stl to Blender, then export, and exported stl can be used anywhere. @DeltaFlight thanks for the tip, I'll give this a try.by devijvers - General
Every STL produced by OpenScad I try to import in HeeksCAD results in the same result: either it doesn't display or I get artifacts. Other STLs work fine. What am I doing wrong? My own objects don't work and neither do other people's objects. I tried to import the STLs for Prusa part and they give the same behavior. I'm using HeeksCAD 0.18.0.by devijvers - General
How about using chains instead of belts?by devijvers - Developers
QuoteNoobMan Trying to use a dremel by gripping it to its case is not appropriate and its not what the tool was designed for. Any number of its internal parts might vibrate like church bells. Good point.by devijvers - Developers
Quit cost estimation: - cut wood pieces: €15 - metalware to build frame: €15 - printed parts: €35 + shipping - electronics + motors: €100 + €55 + shipping - belts: €15 + shipping - linear bushings: €15 + shipping - hotend: €40 + shipping - extruder montage kit: €15 + shipping totals: €305 + shipping Which is about €75 less than a prusa + you've got a platform to mill. Very interesting. How abby devijvers - Developers
Quotenophead Yes that is what I am working on ATM, see . All the studding frame is replaced by a few sheets of 12mm MDF, much stiffer in the directions it needs to be. I doubt it would be much good for milling due to the use of belts, but it would be a lot better than a normal Mendel. Hmm, very nice. I'd try to get rid of the continuous belt though. The woodwork seems simple enough too.by devijvers - Developers
I've read elsewhere on this forum that the copper dust released during PCB milling is a problem for the reprap, namely for the bushings and electronics. Apparently the solution for this is to submerge the PCB in water. Any thoughts on that?by devijvers - Developers
>> - bowden cable extruder > Errr... what? For a mill?! Don't understand this! There are vertical X axis designs that include the extruder, no need to mess around with Bowden > cables and their problems (I have a repstrap with one, direct drive is better!) Sorry, got confusedby devijvers - Developers
Fair enough. What I understood so far is that a standard Mendel/Prusa frame is not stiff enough for the minimal accuracy that is needed. That means that to get from a standard Mendel/Prusa to a machine that can mill for example the Gen7 PCB one would need to upgrade her machine. Those upgrades could possibly include (needs to be determined through experimentation): - vertical X axis, - bowden cby devijvers - Developers
Regarding wobble in the frame, maybe we should look at alternative and stronger frame constructions? Preferably not wood as nophead has reported inaccuracies due to wood being influenced by weather conditions.by devijvers - Developers
Rejoice! Glad you could figure it out.by devijvers - Reprappers
I've started to read the paper more thoroughly, there is a reference [19] that explains the manufacturing indexes in more detail: [19] O. Kerbrat, Méthodologie de conception d’outillages modulaires hybrides basée sur l’évaluation quantitative de la complexité de fabrication, PhD Thesis, École Centrale de Nantes (2009) (in French) This document can be found here: It's in french. My french isby devijvers - General
Here's the paper: (free PDF download available) I only scanned through the document. The guy claims to have used a algorithm to calculate and visualize the difficulty level of a "manufacturing" a build. He claims it allows designers to make a more informed choice between additive and subtractive methods. In your opinion, could a similar technique be helpful for reprap users?by devijvers - General
> These hit the sweet spot of the Pololu drivers: @nophead do these motors also hit the StepStick sweetspot?by devijvers - General
> Now for the big question: I've been out in my garage every chance I get since I've built it. How do I stop? You don't.by devijvers - Reprappers