Bonjour, Pour le moment 99% du temps je travaille à l'intérieur d'un volume de 10 cm x 15 cm, et 10 cm de haut. 15 x 15 x 15 seraient le minimum pour moi.by Yvan - RepRap Groupe d'Utilisateurs Francophone
He is using Slic3r, but he says it is not running properly on his machine. Seems he can export g-code but he can't adjust most or any of the parameters...? Have not seen the situation on his machine myself, only trouble shooting over the phone!by Yvan - Reprappers
Okay just an update to close this issue. My friend worked through the 12 questions above, and then took a peek at the g-code. Turns out 248°C was being set by slicer. He is having problems running it properly and adjusting settings in it. We are glad to find it is not the Arduino. Saves us having to return it!by Yvan - Reprappers
That's not a silly question! -This- is a silly question: How many surrealists does it take to change a light bulb? Sorry, for a moment Monty Python took over... I suspect the deafening silence is due to no one really knowing what to answer you. I've built a few Prusa i3, and I think you have a rather standard frame. I'm guessing most plastic parts that are not intended for the wooden box framby Yvan - General
If the Z axis moves normally in under manual control, but does not function when you are printing it is probably a g-code issue. For some reason some g-code files don't have the proper Z axis data. You can look in the file and see if it is missing or not. Generating a new file will often solve the problem.by Yvan - Reprappers
Frans, do you know if the nozzle is bored out fully or not? It has never extruded anything right? I've seen a defective hot end with about 4 mm of bore at 0.35 mm, and the rest was at the expected 3.X mm. I got it working real quick with a drill bit...by Yvan - General
QuoteRP Iron Man The Pico thermal simulation is more of a marketing facet than design verification. Eric Meh, not much of a surprise there, but I didn't know that. Will not be so gulible next time!by Yvan - General
Drying filament in a vacuum chamber: Werner Berry I think I need to do this with my nylon.by Yvan - Reprappers
Sometimes the beta testers have an NDA because they might find Bad Stuff. That feedback is then used for a new generation of product which is sent out without an NDA. Hopefully at that point most of the Bad Stuff has been delt with and the beta testers can give everybody a good vibe.by Yvan - General
Bonjour, Le dépassement de plus de 2 ou 3 degrés est anormal. À 250°C ça pourrait même abimer la buse chauffante...by Yvan - RepRap Groupe d'Utilisateurs Francophone
Quotevegasloki After a fair amount of tinkering I've been able to get a Prusa v1 very reliable for 230* plus temp material. A bit of PID tuning, a fan and finding the minimum extrusion temps for the material and I was good to go. It took quite a bit of work to make it happen. No go for PLA but I have an Aluhead I can use that prints great pretty much out of the box with minimal tuning. That iby Yvan - General
QuoteRP Iron Man QuoteYvan Hey Eric, how are your projects going? The Pico guys on Kickstarter have a nice thermal map of their hot end. In my mind is shows how things should be, heat flow wise. For that general style or layout anyways. I should add the Pico heat zone is very long, so we will see how that works out in the real world. Yvan: Unfortunately, life has been getting in the way andby Yvan - General
Does the vacuum chambre help a lot? I've been searching for years for an excuse to build one....by Yvan - Reprappers
How did things turn out? I've printed some bushings to replace the LM8UUs on the Z axis of a couple of machines. The seem to work nicely, even though the nylon had not been tried out. BTW, I never trust the temperature readings on the common variety ovens, they can be off quite a bit.by Yvan - Reprappers
More updates... Seems as a rule he is making sure there is little else running in the background. One long print started off fine, and then the temp jumped to 247°C or so mid way! It still managed to finish the part, but you can see a clear transition half way up. He's also switched back to another machine once more to check things out, and the problem followed. He has to set the temp 3 or 4 tiby Yvan - Reprappers
7 x 4 = 28 wires... yes a bit much. BTW are you thinking of switching to 24 v instead of 12 v for the heaters? 48 v and so on would be even easier to deal with amperage wise. I never liked the 12 v thing, but when I showed up the core RepRap guys had just settled on 12 v, so my comments were too little too late to change anything! BTW, I also never liked how a hot end's life depends on just oneby Yvan - Reprappers
Hey Eric, how are your projects going? The Pico guys on Kickstarter have a nice thermal map of their hot end. In my mind is shows how things should be, heat flow wise. For that general style or layout anyways. I should add the Pico heat zone is very long, so we will see how that works out in the real world.by Yvan - General
Isn't it rather evident why the Prusa design is so prone to jams? Seems rather apparent to me...?by Yvan - General
So how is the thermistor held in place in the Prusa design?by Yvan - Reprappers
Je crois que les frères Kühling experiment avec 1 mm? Pour le remplissage(infill) je presume. Kühling&Kühlingby Yvan - RepRap Groupe d'Utilisateurs Francophone
Thanks for those suggestions. I think his computer is one of those small form factor jobs, he is not too impressed with its performance overall. Slow and limited RAM might be part of the issue. I'll ask him more questions... At the moment he is very pleased, he managed to print a replacement gear for a milling machine.by Yvan - Reprappers
I guess there are only three basic configurations for arranging several extruders. Either in line, in a circle or an arc. I think the arc might have an advantage over the circle in one way. Less rotation would be needed to reach all 7 extruders. That would be less demanding on the wiring and filament feed path. The circular arrangement would look the coolest though.by Yvan - Reprappers
A carousel on an angled axis sounds interesting, but the mechanics might get complicated real fast!by Yvan - Reprappers
Bonjour et bienvenue! Il y a un forum pour les utilisateurs francophone ici: forum français Without seeing photos, I would guess that the stringing between objects is insufficient anti-ooze retraction. I know some software can print one object at a time, but I have not used that feature. Others with more experiance will have to answer that one!by Yvan - Reprappers
Well it seems something is wrong on the software side, or with the USB connection. He can get it to work reliably now by setting and resetting the temp in Pronterface 3 or 4 times. Print quality is bad for the first 6 or 7 layers which print very slowly, and then speed and quality pick up! I have no idea what could be causing such silliness!by Yvan - Reprappers
Don't worry about the pulleys, if you use 20 tooth they are just fine in the big scheme of things. After that you will be chasing down other sources of play, like belt tension, caliberating and adjusting everything in the firmware etc. The biggest steps up in quality I've seen on the half dozen or so machines I've built over the last two and a half years has been firmware upgrades, hot end upgraby Yvan - Reprappers
Quoteuncle_bob If it's a 550W ATX supply as mentioned in the first post, it likely is not up to the task of driving a printer. Get a 12V 30A industrial supply instead. If that's not it, then I'd bet on the CPU being flaky. You may have a bad solder joint on the board or tin whiskers. Duh! I missed that(in the faint blue font...) Short of an oscilloscope, is there some way of seeing those powby Yvan - Reprappers
TJGR, I can't tell from your web site photos how much gap you have between the heater block and the heat sink, but it looks very close to what I used on mine. About 10 to 15 mm or so? That is the key element as you say. The Blomker varient can't possibly work well with the cylindrical style heat sink. All it does in that configuration is wick a lot of heat up towards the downward moving filament.by Yvan - Reprappers
I use the 20 tooth on the assumption that there is less "jitter" as uncle bob says, but I don't really know how much of this jitter is reduced with a 20 vs 16 tooth pulley. My take is this style of machines is they are just a big pile of quivering jitter, so the less the better.by Yvan - Reprappers
Selling a busted machine is not easy... Do you know other people who are into these machines?by Yvan - Reprappers