They only do nylon powder (well they do a polystyrene powder too), but even if nylon is not what you want, they might know who does do ABS. They are:- They are in Aylesbury in the UK. If I recall correctly they used to do a minimum of 10kg per order. Davidby davidgoodenough - Powder Printing and Selective Laser Sintering
That is not a capacitor, it is a fuse (a self resetting one). Note the annotation next to it F2, if it were a capacitor it would be C2. If I were you I would replace it and check all the tracks and cables for shorts.by davidgoodenough - Reprappers
Given that the link says that in the UK there are different formulations, and that the formulation is different again in the US and France, it might be worth giving a brand/product name, preferably a link to an online supplier, so that others can try to recreate your results. Davidby davidgoodenough - General
Well many RepRap machines have exactly that for the Z axis, two motors in parallel driven by one driver. So it should work for the X (or Y) axis as well. Davidby davidgoodenough - General
The alternative is a battery backed power supply, It float charges the battery (a car battery would do well) and produces a regulated 12V output.by davidgoodenough - General
What is the nozzle size. I have looked on the web site but while I can see selection of filament size, but not the nozzle size, nor any definition of what is normally shipped? Davidby davidgoodenough - General
prusanozzle.org says that these will be available in week 50 2012, and there was discussion in these forums in January this year, but nothing since that I can find. Does anyone know when they are to be available (or have they been abandoned)? I would like to try one with some Taulman 618 nylon filament. Davidby davidgoodenough - General
One suggestion for future issues. Reading a two column PDF on a laptop or desktop with a landscape screen means that you are forever scrolling down the first column and then back up to the top of the second column. I suspect that most people will read this the screen rather than printing it. I suggest either reformatting it to be landscape (to match the screen) and possibly three columns, or mby davidgoodenough - General
Has anyone looked at using high power white LEDs? 10W are easy and very cheap to get, 50-100W are more expensive. The only real problem is that they do not produce a nice clean point, the light is spread over anything up to 140 degrees. So a collimator and lens would be needed. They also have the advantage to being visible and being multi-colour they might be easier to use on coloured powdersby davidgoodenough - Powder Printing and Selective Laser Sintering
I would be interested in the first one. More rigid would be good for what I need. What are the heated bed and extruder temperatures for it? Davidby davidgoodenough - General
Pronterface does NOT use Java at all, it is written in Python. Java is only needed if you want to use Host, which does what pronterface and a slicing program do together. So you can debug the pronterface problem as a python problem.by davidgoodenough - RepRap Host
RS Components do very similar things, including ones driven by 240V AC. They are much more powerful than these. Look for part 245-635 and others like it. So handle the 240V AC, you could try a solid state relay like 476-656.by davidgoodenough - Controllers
Have you looked at Cura? It started life as skeinforge-pypy. Davidby davidgoodenough - General
Reverse the connector to the motor.by davidgoodenough - General
If you go to the openscad.org web site, there is a mailing list which is where most of the discussion happens. Davidby davidgoodenough - General
There is an alternative. Use a power supply intended for 12V lighting systems. They are readily available and easily deliver 20A. Davidby davidgoodenough - General
Good to see a local start, I am just up the road in Haddenham Bucks. I am just about working, but awaiting some LM8UU linear bearings. Davidby davidgoodenough - Reprappers
You will create more problems (and cost) this way. PCs do not have large numbers of GPIO (digital IO) pins (which are needed to control the motors and the heaters, and to read the end stops) or any analog IO pins (to read the temperatures). The nearest you will find to the digital IO is the parallel printer port. So you will have to redesign your RAMPS (which gets attached to the arduino) andby davidgoodenough - General
The only problem with the above advice is that none of the printed kit suppliers build these, and of course without a printer you can not print your own. So either find a local friendly existing RepRap user and persuade them to build bits for you, or build a kit and make these a priority to build first and live with what you can buy at least in the first instance. Davidby davidgoodenough - General
Have you looked at something like X-Seal (http://www.x-seal.co.uk/shop/acrylic-120c-cold-curing/) which looks to do about the same thing but does not require a vacuum.by davidgoodenough - Reprappers
What temperatures do you use. As far as I can tell Pronterface SFACT settings only have one profile, PLA. It would be useful to have a documented profile for ABS as well.by davidgoodenough - General
The current code is on github, at . So to load it use:- git clone and away you go. The Wiki needs to be updated.by davidgoodenough - General
On a related subject, where should be thermistor be placed using this heated print bed? The web page mentioned does not seem to mention a thermistor at all. Davidby davidgoodenough - Reprappers
john, You misunderstand me. The reason that the nylon produced by the nylon rope trick is wet is that it is being drawn up through the upper liquid. But I am not proposing using the nylon rope trick, just the chemistry behind it. Rather than having two layers of liquid (as in the trick) I am advocating tiny drops coming into contact and forming the nylon, so there is then no upper layer to wby davidgoodenough - Powder Printing and Selective Laser Sintering
One thing I do not know and can not find any data on is how quickly the copolymerisation happens. I think (or rather as I remember if from chemistry lessons 40 years ago) it is near instant, so in that case I would not want the nylon to form in the needles, but rather at the deposition surface. If it took a little while one might improve mixing by generating the two droplets, mixing them and thby davidgoodenough - Powder Printing and Selective Laser Sintering
My idea is to create the nylon in situ where it needed, NOT to create a nylon filament that gets deposited. A droplet of each chemical would be deposited together, and react to produce the nylon (or whatever condensation copolymer you chose). If we get the drops small enough and the proportions right then there should be little or no unused precursor material - we want it all used up to produceby davidgoodenough - Powder Printing and Selective Laser Sintering
except that you do not need to cure it with anything, just mix it where you want the nylon to grow. Also these liquids are of a similar consistency to water, so would they not simply run out of the dispenser uncontrollably? Two of them could be arranged in a V, coming together at the point of deposition. How slowly can you run liquids out of the dispenser, and how well can you stop the flow?by davidgoodenough - Powder Printing and Selective Laser Sintering
I have read this thread with interest. One of my long held dreams with RepRap is to get rid of the heated extruder but still deposit plastic. I would do this using the nylon rope trick (or rather the chemistry behind it) or to give it its proper name condensation copolymerisation. Essentially if you take the two liquids that make nylon and layer them one on top of each other (they do not mixby davidgoodenough - Powder Printing and Selective Laser Sintering
Do you have librxtx installed, and if so where is it installed. You should then update the script that you are running to include an option on the java command to include -Djava.library.path=. So if it is installed in in /usr/lib/jni you would add -Djava.library.path=/usr/lib/jni/ to the java command. You will of course need a 64 bit version of librxtx. Davidby davidgoodenough - RepRap Host
There seem to be two different versions of avrdude doing the rounds, one packaged with the arduino code, and the other the generic package. You need the arduino protocol, not the stk500 protocol, which from the function names I am guessing it is trying to use. So find the version that comes with the arduino package, and it should work. Davidby davidgoodenough - Controllers