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http://reprap.org/wiki/RUG/Netherlands
Re: Grounded Experimental Delta Printer - 12 years ago
Those changes really help, i think the unicolor version works well. Somehow the inverted one looks a bit better.(But they're both good) Moving the pupil a bit is good aswel, makes it less confrontational.(Other logos use it that way basically.) I tried adding the those blocks to the feet of the Simpson, also tried adding another vertex to make it look more 3d, dont think either is better, in casby Jasper1984 - Delta Machines
Re: Is there any alternative to Teflon? - 12 years ago
> Even in the J head design, the teflon liner can still get squished over time and create a gap between the liner and the nozzle taper. This in turn will cause your hot end to become less responsive to retraction and increase oozing. What if there is a force down the pfte tube, if it creeps, the force just pushes the pfte tube further down. Thats the idea here, anyway. Of course, it would stiby Jasper1984 - General
Re: An internal struggle between the "we" and the "me" on the community and IP - 12 years ago
QuoteThe important thing to consider is that in that utopia there is no need for a GPL or CC license so the fact that those licences are promoted means that we are not yet in that utopia or people would publish exclusively anonymously.Well excepting retired people, students, plainly rich people and 'slackers'.. But it is kindah still 'wrong' to stick to those, i effect not give the other people aby Jasper1984 - General
Re: Grounded Experimental Delta Printer - 12 years ago
I for one, welcome our new repcrab overlordsby Jasper1984 - Delta Machines
Re: Issues with first prints - 12 years ago
I realized that some of the issues I am seeing is due to this.. Probably doesnt explain matrix4721 issue. All i have got on that is, try changing extruder width? No signs of ooze, right?by Jasper1984 - Reprappers
Re: An internal struggle between the "we" and the "me" on the community and IP - 12 years ago
If you want to sell separately under a different license, and you are the sole author(or have all authors on-board) you can with the GPL. That at least limits the need for CC-nc, but not sure how much. However you cannot when the other people that contributed to the GPL work dont agree. If you upload to thingiverse, they claim that you give them license to everything. The TOS is very clear aboutby Jasper1984 - General
Re: Issues with first prints - 12 years ago
I have things like this too.. Filing/'wedging' them off leaves makes it visually look bad.(The latter less so i think it turns much lighter because of much more granular surfaces when you file) According to this,("Your object has lots of beads on the sides") it could be due to overextrusion, but i am not sure. It seems that changing my extrusion width to 0.3mm improved things, but not totally..by Jasper1984 - Reprappers
Re: What things should I consider to allow for optimum overhang printing performance? - 12 years ago
Lowering the temperature may also help.(Lowering the extrusion width?) Note that moving the nozzle away doesnt actually help much, the heat conduction down to the model is small due to the printed thread having a really small cross-section. This is why there is a `slowdown-before-layer-time` instead, the potential for messing up the surface of the print isnt worth it. (Note that that setting isnby Jasper1984 - General
Re: software problems - 12 years ago
I was looking to to specify basically all versions, also of Marlin/Sprinter.(Download links good too) Afaik arduino 0022 is quite old, looking at the website latest stable is 1.0.5. Did you get it from the sprinter git repo, it says you need 0023. (Dont know where you can get that, there are files that claim to be arduino0023 if i search) AFAICS Marlin doesnt mention a version, maybe it needs aby Jasper1984 - Reprappers
Re: Basic Mechanics for 3D Printed Parts - 12 years ago
Tbh i just wing it, in terms of if parts actually are strong enough, it seems to work well enough. I have a bachelors in physics, but i think other people (can)do the same. Geometry and stuff i do exactly though. I can do most of it with openscad w/o paper, but i get paper if some geometry problem doesnt come fast enough. However usually that just seems to indicate i have to take a step back andby Jasper1984 - General
Re: Having a RepRap issue tracker and RepRap bounties. - 12 years ago
About github, i use it myself, but i think it is too big, i keep that in mind. (I suppose i could try switch to gitorious or some other git hoster) > Today is our quarterly reminder that Linus gave us a completely distributed VCS, so we stored all of our repos in a single point of failure FTR: I quite like traumflugs idea.by Jasper1984 - General
Re: Cost - 12 years ago
Yeah i shouldnt have exploited the figurative term..by Jasper1984 - General
Re: software problems - 12 years ago
It fails to compile, it didnt start trying to upload yet. Looks like the fault of the source code, or less likely an old version of arduino. Where did your sources come from? What version of arduino are you using?(FTR: I havent ever changed my melzi firmware)by Jasper1984 - Reprappers
Re: Cost - 12 years ago
@vegasloki Do you mean that you can get 90% of the performance for 1/10th of the budget? It implies that there wouldnt be much cost in getting very decent accuracy. Most people arent racing each other for print quality, they just want good prints. As i said, there are basically two classes of people here, the tinkerers and the consumers. And you can view trying to decrease the price from those tby Jasper1984 - General
Re: Need help printing Taulman Nylon 618 - 12 years ago
I have heard cardboard used. Vaguely remember that porosity helps.by Jasper1984 - General
Re: how can I rotate object on Slis3r's plater on X or Y axis - 12 years ago
For instance blender, and fill in the value 180 on x or y manually for exact flipping, for commandline there is admesh --x-rotate=180 yourfile.stl -b yourfile.stl.(Not sure if that works on windows)by Jasper1984 - General
Re: Add a little style to your spool holder... - 12 years ago
Looks cool, no 3d models? My spool holder looks like this, it'd need some modification.(Hmm, maybe just draw something on the spool itself)by Jasper1984 - Look what I made!
Re: Budaschnozzle Hot End (modified ) version overcome leakage problem - 12 years ago
How did it leak and how does what you did solve it?by Jasper1984 - Reprappers
Re: Problems with print progressively 'collapsing' as height increases - 12 years ago
You may want to lower your temperature a bit, the hot end burrying itself in plastic also suggests to me that you may be extruding too much, decrease the extrusion multiiplier. A better(more systematic) approach would be to calibrate it. > Its more of a problem as the layers get smaller and smaller because, quite simply, the hot end never moves away. Actually conduction from the hot end intby Jasper1984 - Reprappers
Re: Could holes be made in the sides of the nozzle - 12 years ago
> Eliminating a pressure vessel that is mandatory You say it like a teacher told you with authority. Not convinced. I havent machined(substractively), however, the feasibily of drilling is easily sufficiently plausible for me, it'd basically be this approach, but with a little printed tool to hold the acorn nut on its side. The front end is 2mm diameter, so ~ 3mm² surface area, thermal condby Jasper1984 - Let's design something! (I've got an idea ...)
Re: Cost - 12 years ago
> the ultimate difference will be printing resolution, the cheaper printers will always only be capable using down to 0.35mm nozzles where as some of us today are using 0.2mm and smaller and those sizes are starting to look "big" I dont see how cheaper printers are inherently limited in resolution in the near term, looks like a matter of maintaining rigidity and changing gear ratios to me.(0.by Jasper1984 - General
Re: Business opportunities for home 3D printer folk? 
- 12 years ago
I am not sure if the money ends up at the right people, but it is extracted from the right ones. This thread seems to be about pointless shaming, the persons shamed will probably never see this. Some people just have enough money, so at best they are guilty of earning it poorly.by Jasper1984 - General
Re: Cost - 12 years ago
Attached is a calculation of cost, since i am havent actually done it, and may not have counted everything, lets say 300€(excl btw) is a more realistic outcome. Then: (with one too many significant numbers) 1) Electronics 28% 2) Motors 18% ('A motor is just like 15$ its cheap!'... yeah you need five) 3) Hot end 12% 4) Power supply 6.6% 5) Heated bed(w/o glass) 6.6% (This totals 72%) And of coby Jasper1984 - General
Re: Could holes be made in the sides of the nozzle - 12 years ago
Because (in the spirit of making things more reprappy)it eliminates vitamins that might not be available, and requires no machining other than drilling. Basically it is the brass acorn nut, metal wire, pfte tube, aluminium foil and tape. And the hot end is ~nr3 in price, though 'only' 12% in my calculation. Of course the hot end is critical and not something to skimp on if that increase the probby Jasper1984 - Let's design something! (I've got an idea ...)
Could holes be made in the sides of the nozzle - 12 years ago
(note the attachments)The idea is to put holes in the side of the nozzle and run (stiff-ish)wires through it, those wires go through a block, are twisted together behind the block. Between the block is a pfte tube so the block pushes it into the back of the nozzle. The nozzle end is stuffed as tightly possible with aluminium foil/tape and the thermistor. The heater resistor would kindah have toby Jasper1984 - Let's design something! (I've got an idea ...)
Re: Water cooled all metal hotend - 12 years ago
@MattMoses thanks for the link. A fan doesnt pose much technical complexity. It is literally directly connected to the 12V.. Besides maybe people will want some suction getting rid of some smells/toxic fumes.(Even though those seem to be easily in the safe range) That'll involve air currents that can be used for cooling aswel anyway. Water cooling does pose more technical complexity? Maybe doinby Jasper1984 - General
Re: Repositioning Endstops (Reprap Air/Prusa's) - 12 years ago
I have a design for a carriage(just there atm, not released edit: i have an earlier version in use) with a sort of small quick fit.. I could try implement the idea on it. Basically think an arm rotating on a screw with a slider which is is controlled by a screw and the end stop goes on there. Main difficulty is probably getting the arm to sit steady at two points well.(with precision mattering inby Jasper1984 - Let's design something! (I've got an idea ...)
Re: Water cooled all metal hotend - 12 years ago
Drilling a 0.5mm hole in that domed nut sounds hard..(well through the M6 nuts too) Yet i havent seen anyone describe it. Suppose is just a matter of getting a tiny drill and a stable drill stand?by Jasper1984 - General
Re: perimeter separating - 12 years ago
Lowering the various extrusion widths (In particular `--solid-infill-extrusion-width`, `--first-layer-extrusion-width`) can help. Basically it makes more thinner lines, so it might more quickly put a bit of solid infill in between. > When I check my gcode at gcode.ws it shows infill between the two walls, and while printing the head goes over the area three times, but there is a gap betweenby Jasper1984 - General
Re: Control RapRap from an Arduino UNO - 12 years ago
Note the Ultimaker has a LCD interface, they exist for RAMPS, at least. Sorry for forgetting it earlier...(it might not be relevant, of course) Suppose you have seen this reprap wiki page already? I think the JY-MCU bluetooth thing send talks the serial normally via the USB directly. So maybe the arduino uno can talk there too. They're not connected to the headers according to the picture, andby Jasper1984 - Reprappers