Are you using a 12v LED power supply? Similiar to what I experienced at some point.by Yvan - Reprappers
Nununugent, you meant the Blomker kit was unassembled, right?by Yvan - Reprappers
I don't know enough about hot ends to understand what you mean by heat break and thermal barrier? Yes, the gap is too short, but if there was a horizontal heat sink(where the base of the aluminium cylinder is now) wouldn't it have a better chance of drawing heat away from the filament coming along down the feed path? Right now it seems that the excessive heat reaching the cylindrical heat sink iby Yvan - Reprappers
You might be able to save the hot end hardware itself, if you can replace the heater element or resistor that was used. Same for the thermistor. Does the hot end have a PTFE tube inside? Those are easy to find and cheap. How much time do you have?by Yvan - Reprappers
I'm managing to find everything for less than kit prices. It may have to do with location. If you are close to someone who sells very competitively priced kits, I guess it would be hard to beat. It also depends very much how good you are a sourcing parts... BTW, for the i3, the biggest issue is the aluminium frame. You might be able to do a very nice job yourself with 1/4" plate and a jigsaw. Aby Yvan - Reprappers
I only use 20 tooth pulleys. I would like to hear the opinions of others as to what may be better.by Yvan - Reprappers
Quotethejollygrimreaper Nununugent: where did you get the mendel max that the hotend came with ? the reason that would be jamming is beause the stainless section is too short, Yes, very much so. I also have doubts about that aluminium "heat radiator". I've used flat aluminium plates, look at the Eckertech design, it uses the same concept. You want to pull the heat away, not up along the filamby Yvan - Reprappers
Good point, but I had no problems here and he had no problems when he tested on another machine. It's just when he goes back to his computer that it goes up above the set temp. I -think- I seated that one in exhaust cement.... I'll ask him to check that anyway. Who knows at this point?by Yvan - Reprappers
Does 3 mm flex or elastic filament extrude well/better, or does elastic filament always risk not working well regardless of the diametre? I have extremely reliable extrusion with 3 mm, but if 1.75 is emerging as the standard I'll make some machines for that size. I've also ordered a Filastruder, so I can make 3 and 1.75.by Yvan - General
Hi Everyone, A friend of mine is learning to use the last Prusa i3 I just built, and he is having a hard time with the hot end temp. On my big old Mac, hot end temps were very steady. He is seeing fluctuations from 185 up to 250°C. As you can imagine, it is not good for the J-Head with its PEEK and PTFE parts. He is suspecting all sorts of things from Windows, to the USB implimentation, Java ectby Yvan - Reprappers
Quotethejollygrimreaper QuoteYvan I'm still on the lookout for any evidence that one is better than the other. If anyone has anything substancial, I'd love to see it. you probably won't find any/much that is valid, LOL! So far it seems that 3 mm PLA can be really stiff on a small spool. It seems there is an unwinding problem caused by small inner diametre spools and 3 mm PLA. Also, it seemby Yvan - General
I'm still on the lookout for any evidence that one is better than the other. If anyone has anything substancial, I'd love to see it.by Yvan - General
Thanks, that's exactly what I was looking for!by Yvan - Controllers
Hi Everyone, I've got an xbox power supply for the xbox "S", it is only rated at 135 watts. More than enough to supply the RAMPS and steppers. I've cut off the twin barrel connector plug, and found four 18 guage wires inside. There is 5 volts between the red and white wires, with the red being positive. The two other wires are green and black and show no voltage. The status LED is amber(or "Oraby Yvan - Controllers
Bonjour, Les J-Head fonctionne bien avec l'ABS, mais il ne faut pas dépasser la température maximale du PTFE et PEEK. Refroidire le cylindre en PEEK avec un petit ventilo de 40 mm donne une peu plus de marge de manoeuvre. À 245°c'est déjà chaud, et l'ABS devrait bien sortir. Sinon, c'est possible que la buse ait bloquée, ou que la thermistance donne une température faussée entre autre.by Yvan - RepRap Groupe d'Utilisateurs Francophone
Okay I got the machine all sorted out just in time, a friend came by and picked it up yesterday. I made a few PLA extruder gears with it(some say they are more durable than ABS) and I gave him my only spool of PLA to boot! So now I will buy some more. I bought some cheap digital calipers and I'm hoping the next spool is more consistant than the first one. Although the test parts did come out nicby Yvan - Reprappers
There is an art to dealing with those.... first I tie off the sections that are spooled or nicely wound together without tangles. That gives me the chance to see where things have crossed over, and I carefully pull those out. Don't move fast. It's more like a chess game. The faster you move the worst it gets.by Yvan - Reprappers
I think I've got the Z dead on, over 24 cm or so of lift and it doesn't drift off the mark. I would need to get a more accurate ruler if I want it to be even more accurate. At the moment I have only one spool of PLA(from Revolution Printers) and it is not the most consistant. The feed rate is the only fudge factor left, but it is getting closer. I think I was loosing steps feeding and retractiby Yvan - Reprappers
This extruder is new, so everything looks tight. It is printing much better than the other day, and it is feeding about 4.85 mm when I ask it to feed 5. At least now it is very consistant! I marked the gear and when I tell it to feed 16 mm it makes one tooth short of a full rotation on the big Wade style herringbone gear. Also consistant. Not entirely sure where the discrepency is from when I sby Yvan - Reprappers
Quotemiso QuoteA2 Wouldn't it make more sense for Stratasys to first sue Adrian Bowyer, and his company RepRapPro Ltd? Bringing a lawsuit against Adrian Bowyer (invented the RepRap Project ) would generate a massive amount of free press exposure. I think this is the most efficient approach for Stratasys to get their message out to the hundreds upon hundreds of companies infringing upon Stratasysby Yvan - General
Okay, I will try the suggestions tomorrow. It seems just from fiddle with the stepper trim pot, cleaning out the hobbed bolt and putting it back together(probably tigher now) it is not as bad. A test piece just finished and it looks cleaner, not for entirely know reasons!by Yvan - Reprappers
Just and update... I've checked to see if the stepper driver was set too low, and it seems fine. I also gripped the filament as it is being pulled in, and there is no sign of slipping or missed steps. It pulls very strongly and evenly. So maybe my assumption that the hobbed bolt is not quite agressive enough to push PLA is wrong, I'm not seeing any clear signs of stripping and slipping.by Yvan - Reprappers
Hello Everyone, I'm having difficulties caliberating a Wade style extruder with a J-Head. If I remove the hot end, I can set things in the firmware(Marlin) so that 5 mm of extrusion gives 5 mm of 3 mm PLA filament moving into the extruder. So far so good. When I add the J-Head to the mix, I get anything from exactly 5 mm to 3 mm or so of extrusion. The J-Head has a 0.35 mm orfice, so it is not tby Yvan - Reprappers
I had a Techzone Mendel, and I suggest just moving up to more recent electronics if it is possible at this time for you to do so. There is more recent software and firmware that makes it worthwhile, and the electronics themselves are not very good. The hot end temperature management is particularly unpleasant!by Yvan - Reprappers
Those industrial suppliers are always worth looking into. Some will not really want to serve the small guys, but others are very good with that. Prices can go from very high to very low I find. You can't tell from the outside! The place I get most of my stuff now is very cost competitive. They beat every single price I find online or in other bigger shops like Brafasco and Fastenal. They are slowby Yvan - General
Toujours dans Print Settings/Advanced. C'est possible qu'en réduisant Top solid infill la qualité de finition augmente. Quand la largeur de l'extrusion est réduit, les détails fins sont mieux remplis. Augmenter Défaut extrusion width donne une interpolation plus grossière, qui risque d'aggraver les problèmes de remplissage.by Yvan - RepRap Groupe d'Utilisateurs Francophone
Quoteamramsey Try Revolution Printers for a decent Canadian source for smooth rod. Pretty nice quality stuff. I'm also partial to their premium 3mm PLA. Damn nice stuff and a pretty good price. All the rolls that I've gotten from them have been bang on 2.85mm and nice and round. I've ordered a few things from Rev., in what way is their premium PLA different? I've just started printing with PLAby Yvan - General
Bonjour, tu utilises slic3r? J'ai parfois les mêmes problèmes. Ça semble être le logiciel qui ne gère pas bien les espaces entre les contours.by Yvan - RepRap Groupe d'Utilisateurs Francophone
Eric, I actually called Cook the other day and thought I had found a good supplier for 8 mm rod, but it turned out it was very expensive! The rest of the prices they gave me were good though. Shipping was reasonable and fast too. wooden, I had forgotten about Fastenal.com. How much shipping do you pay for "RepRap sized" orders? I find the local place here (OSI) beats them on price though, by abby Yvan - General
A little quick over view you might find usefull: Injection Moulding Guideby Yvan - General