It all depends on layer height and width you use for printing. What nozzle diameter are you using? This roughly gives you the maximal total error you can tolerate on Z to at least have a hope to lay down the first layer. Deflection is just one of the (many) factors to consider. Depending on how heavy your carriage is, without diagonal supports you may have some problems of shear deformation at hiby cristian - General
Sooner or later I will try these.by cristian - General
QuoteAndrewBCN Misconception 1. Misconception 2. Misconception 3. Misconception 4. Misconception 5. Hey, you forgot Misconception 6, about the fact that a CAD file (source or not) does not necessarily contain what is legally needed to define a design. With this I mean that the architets who register their designs do not just submit a CAD file (look here as a random example of what is required, wby cristian - General
Quote The STL can be compared to an executable binary (.exe) The STL may probably be compared to the output of an executable program, but not to its binary format.by cristian - General
The 3DLP does not look like a free licence at all. Open source only, I guess. IMHO the important question to be answered here should not be whether the GPL applies to the design included in a 3D source file or not, but whether a free licence (GPL or anything else with the same spirit) can be applied to a design (it is not yet clear to me how) and prevent any action that may stop its "free" evoluby cristian - General
QuoteNossolov Vous pouvez aussi regarder chez Almet. Il y a presque tout ce qui se fait en 1/2 produit Alu et Inox. Il y a une gamme très vaste, y inclus les tubes carrés ! Merci à tous pour vos conseils, je peux finalement faire mes courses.by cristian - RepRap Groupe d'Utilisateurs Francophone
Ciao Massimo, la sezione in lingua italiana è qui.by cristian - General
QuoteAndrewBCN Quotecristian The problem with free software is that anybody not releasing sources may claim to have re-engineered it from the ground up, even if it is not true. ... Exactly! And that is not a problem only with free software, it is a problem with any intellectual work, free or otherwise. Sure, what I meant is that a closed source work has an obvious advantage over free/open sourcby cristian - General
Quotepierrelesek Tord un V slots à la main et après on rediscutera du choix du matériaux. Tord un tube carré avec même diamètre extérieur, longueur, poids et alliage, et après on rediscutera. Surtout je te demanderai où tu l'as acheté ! Quotepierrelesek Surtout dans le fait où tu va te régaler d'assembler une imprimante en aluminium rond ou carré simple , alors qu'en V slots c'est tellement préby cristian - RepRap Groupe d'Utilisateurs Francophone
Citing RS to support one's opinion looks more like a logical fallacy than a valid argument. If it were up to me, patents would not exist and the GPL would be the natural "essence" of things, including 3D designs (better this extreme than having patents everywere, software patents worst of all). But until courts do not start ruling on this topic, I am doubtful and pessimistic.by cristian - General
Quotefourmi Va chez Motedis >> C'est très correct,bien couper. Merci ! Je ne le connaissais pas. QuoteOne-T attention a la fausse bonne idée de partir sur du tube basique , ca n'a pas du tout la meme résistance que tu V ou T slot . au final tu te retrouve avec des tubes qui vrille tres facilement sans meme t'en apercevoir .. La résistance à la déflection (qui est celle que surtout nousby cristian - RepRap Groupe d'Utilisateurs Francophone
QuoteMotoBarsteward I had further discussions with the person who advertised the "Canted Wade's Extruder" for sale. He says that his OpenScad files do not contain any of Wade's or Greg's original code. He described 're-engineering' from the ground up. The problem with free software is that anybody not releasing sources may claim to have re-engineered it from the ground up, even if it is not truby cristian - General
Je voulais construire ma nouvelle imprimante avec une structure en aluminium sans dépenser beaucoup. En particulier je ne voulais pas du slot T ou V. Il y a pas mal de variété chez Leroy Merlin, et quelques articles chez Mr. Bricolage, Castorama mais ils sont assez chers je trouve. Vous achetez vos tubes d'alu où ?by cristian - RepRap Groupe d'Utilisateurs Francophone
QuoteZlob A disposizione. There is an italian language forum ? Qua.by cristian - Smart_Rap
Quotekimented_ Salut AndrewBCN, Désolé je ne viens pas t'aider parce que je crois que nos avis diffèrent. Avec ou sans supports, les Orcs vont conquérir le monde !by cristian - RepRap Groupe d'Utilisateurs Francophone
QuoteAndrewBCN Hehe, tu peux, mais tu auras besoin de supports. Et sous quelle licence les supports sont générés?by cristian - RepRap Groupe d'Utilisateurs Francophone
QuoteAndrewBCN As for the Prusa i3 Rework, I had a rather heated discussion in the French subforum here with the participation of one of the employees or partners of emotion tech (he declined to provide his exact status) and they refuse to even acknowledge that they have been in violation of the GPL for the last two years, and in fact accused me of lying about it and asked the moderator to eraseby cristian - General
QuoteAndrewBCN Quotecristian Alors c'est une guerre mondiale ! Oui, c'est commme jouer à WoW, et ceux qui ne croient pas que la GPL s'applique aux dessins 3D sont des Orcs! Thingiverse: WOW Orc man with power Je peux m'imprimer!by cristian - RepRap Groupe d'Utilisateurs Francophone
Alors c'est une guerre mondiale !by cristian - RepRap Groupe d'Utilisateurs Francophone
QuoteAndrewBCN Cristian, thank you for joining in this discussion Thank you Andrew and all the others for this passionate discussion, it is a very interesting read. QuoteAndrewBCN and sorry for quoting only the beginning of your post, but I have to ask you to rethink your argument from that point on. The reason I am asking you that, is because like Matt, you seem to be missing the main point oby cristian - General
QuoteAndrewBCN Indeed that is very exactly the quite ridiculous paradox that can be derived from the arbitrary (and incorrect, imo) distinction between the OpenSCAD source (which is protected by copyright under present copyright laws, and can be licensed under the GPL if the creator/developer of the OpenSCAD source decides so), and the design that it embodies/expresses. Another paradox is createby cristian - General
In my opinion 2mm with a Bowden is not enough, try maybe 4 or 5.by cristian - General
Quoteo_lampe I never had an oozing nozzle, because I retract fast. That causes the molten filament to get sucked back into the nozzle. ( Well at least in my imagination ) -Olaf It should work that way indeed. I guess you are not only retracting fast: after retracting and lifting, you are doing fast moves and you print at reasonably low temperatures. I usually have a lot of ooze because I printby cristian - General
Quoteo_lampe @○cristioan, you don´t lift the nozzle at all? I´ve checked my gcode, and it retracts the extruder, then lifts z for 0.075mm. You say, this lift could cause those towers? I´ll try next time to keep z down and see... -Olaf I do lift the nozzle and considerably more than you do, because my printer is not very solid nor very orthogonal. Lifting Z adds some delay before the move, and anby cristian - General
Have you tried to flash it again? Maybe it just went wrong once.by cristian - General
Other things that may cause the little towers: lifting the nozzle before a move, high temperature. Quoteo_lampe The skipping stepper can be a result of too much filament, where it shouldn´t be ( towers from retraction failure) and the nozzle running into such an obstacle. True, it may be also caused by a slight warp of the piece or by some deflection of the structure during fast moves if the prby cristian - General
I have only experience with Bowden, so I cannot compare but I can reply to two points. Quotejessicabrenner ○ Difficult to print flexible filaments (ninjaflex, PVA, etc…) This is partially true: there are different issues and some of them can be fixed completely, others cannot. The main problem is that most extruders using a Bowden are not designed for flexible filaments. Any extruder design wby cristian - General
QuoteFalloutBe Hmm well yes, the Z precision of my XY axis will probably be worse than the Z axis. But right now I have a terrible Z axis, and I just want to get it as good as I possibly can. I don't care if my XY axis becomes the worst factor in play. At least I will be happy with my Z axis then. I attached a picture of what I have in mind right now. What do you think? It is a 1204 ballscrew Sby cristian - Mechanics
QuoteFalloutBe If I can however create a perfect Z axis, let's say 20(+-0.1) microns, you almost wouldn't notice that the part was 3d printed! If you think this depends only on Z, you are going towards a huge disappointment. You will need a similar precision on X and Y (deflection, bearing quality, ...) and, even worse, on the extrusion, with all the problems that gearing or a Bowden may give, nby cristian - Mechanics
Quotethe_digital_dentist How did you print the outside at 50um and the support material at 400 um? Looks like the infill is printed at thicker layer height, slic3r allows this in the "combine infill every N layers", I guess other slicers do as well.by cristian - Mechanics