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Printing issues ...
Re: Print at an angle - 8 years ago
For me the problem is simplier. Sorry to say that to you but your belt path is wrong. The blue belt path is not perpendicular to the red belt path, and all red belt path are not parallele. So at each movement you constrain your belt lenght to "cos alpha", and so you "modify" the absolute coordonate at each layer. Regardsby zelogik - CoreXY Machines
Re: comment nettoyer cette piece de l'extrudeur? - 8 years ago
La pièce noir doit être faite en PEEK normalement.by zelogik - RepRap Groupe d'Utilisateurs Francophone
Re: Atfer Hbot, go to CoreXY. - 8 years ago
As promise some photos of the printer. Almost finished printer :-D Dual nozzle (one for PLA/Soft filament and the other for ABS/High temperature filament..): Top view of the cable chain: Rear view, need to clean cables near the ramps system Full enclosure, mount & dismount = 5sec (thanks to magnets) @sdavi: Nice, my first plan was to make rectangular hole ("trou oblong" in frencby zelogik - CoreXY Machines
Re: CoreXY links - 8 years ago
A link to my CoreXY setup. "Zelogik & Jand" printerby zelogik - CoreXY Machines
Re: Conseils pour imprimer en ABS - 8 years ago
Hello, Sauf que la transition vitreuse du PLA se situe au environ de 50/65°C. Et c'est à partir de cette temperature que le PLA va devenir "mou". Son point de fusion se situe au alentour de 170°C, ou il devient "liquide" En gros: 0 à 55° = PLA dur et cassant 55° à 170 = PLA mou et deformable 170 à 220 = PLA liquide et visqueux 220 à XXX = PLA qui ""brule"" Pour finir, chez moi la temperatuby zelogik - RepRap Groupe d'Utilisateurs Francophone
Re: Cheap, simple and powerful heated bed - 8 years ago
This kind of heated bed have already be done with cork and wire long time ago. But it's a really good ideato make custum size heated bed. The knurled nut idea is not bad but it's don't protect the nozzle again crash on the table.by zelogik - Developers
Re: recherche axe diam: 5 mm - 8 years ago
J'ai trouvé ce site qui a l'aire sympatique: Et en plus c'est des petits morceaux.by zelogik - RepRap Groupe d'Utilisateurs Francophone
Re: recherche axe diam: 5 mm - 8 years ago
Hello, Le mot magique pour ta recherche est 'stub acier', tout bon magasin de bricolage se doit d'en avoir, il s'agit d'arbre calibré au diamètre voulu (trempé ou non, en inox, acier). C'est pas chère MAIS ça se vend souvent par barre de 3 ou 6 mètres. Émile Maurin, wurth pour les professionnel. En tant que particulier essaie brico machin mais j'ai des doutes etc...by zelogik - RepRap Groupe d'Utilisateurs Francophone
Re: Atfer Hbot, go to CoreXY. - 8 years ago
For people who have some doubt about cantilever Z axis. Before done that I made a simulation on inventor at work. If the Z axis have a weight of 1kilos, if I add 2kilos on the printing table in the center, the both 12mm rod bend and the Z table down from 0.005mm (near each limit) to 0.08mm in the center of the rod (at 100mm). (distance on Z at opposite of 12mm Z rod). And in conclusion I don'tby zelogik - CoreXY Machines
Re: Atfer Hbot, go to CoreXY. - 8 years ago
Whoooooo, many people build that 'concept'. Nice to see photos of all of them. Thanks to Ybm, sdavi and coronal11 for the photos. :-Dby zelogik - CoreXY Machines
Re: Nema17 + réducteur - 8 years ago
Pour '1' tour en sortie d'arbre, l'axe du moteur aura tourné '26.85123967.....' mais étant donné que cette fraction est infini, il est plus juste de laisser des fractions :-)by zelogik - RepRap Groupe d'Utilisateurs Francophone
Re: Backlash problems. - 8 years ago
An admin can put SOLVED on the topic Finally I have found the problem. It's was just stick-slip of Igus iglidur bush, really quiet but need some oil/lubricant for working better. So now, no more backlashby zelogik - General
Re: Atfer Hbot, go to CoreXY. - 8 years ago
Finally to restart spoke about the topic of my printer :-) I have found the solution problem! It's was not belt, not pulley, not frame, not gap, just Igus bush!! I have put a droplet of oil on the rod and MAGIC !!! no more backlash It's was a stick-slip problem. So good newby zelogik - CoreXY Machines
Re: Atfer Hbot, go to CoreXY. - 8 years ago
For Reinhold X+ and X- Y+ Y-by zelogik - CoreXY Machines
Re: Backlash problems. - 8 years ago
Quotejamesdanielv how much play is there from tip of nozzle, is there any wiggle when the motors are powered up? Almost no wiggle (with comparator fixed on the structure, only 0.02mm) , only when I force, I start to bend the 8mm axis. Quote is there any slop in the bushings or bearings, and how far from the bed is the carriage. normally you want it really close to prevent the slightest slop froby zelogik - General
Re: Backlash problems. - 8 years ago
I have little gap with iglidur bush, but why only y axis and not x. ( fyi: y axis move all gantry, and x axis only nozzle carriage). I have try different belt tension without any change. Both axis rod and pulley have been check and are locked. Thanks for your help ohmarinus but nothing good :-(by zelogik - General
Re: Atfer Hbot, go to CoreXY. - 8 years ago
@dejay: the reason with the 4 more pulley are wrote on the previous page :-) to resume, it's for easier belt alignement and easier belt tightening. @reinhold: i don't have forget you for endstop :-)by zelogik - CoreXY Machines
Backlash problems. - 9 years ago
Hello, To resume, I have only backlash on Y axis and not on X axis on a CoreXY system. (two motors need to move when travelling in X or Y axis) So finally, I don't thing it's a belt or pulley (gt2) problem, as only one axis have backlash. (around 0.1mm) The structure is in aluminium profile, so I don't think the frame have deformation... Maybe somebody have experienced that problem, because Iby zelogik - General
Re: Atfer Hbot, go to CoreXY. - 9 years ago
It's GSM-0809-10, inserted in plastic spacer with a 9mm hole (with a 9mm H7 reamer), there are inserted really tight. (at 0.55€/pcs for 25pcs it's cheap ). Finally when I compare between lm8uu and Igus, both have gap and don't like moment. After all bad 'conclusion', it's seem that only Y (when motor move on the opposite way) have backlash, not X. I need to make a brain-compute phase to find whyby zelogik - CoreXY Machines
Re: Atfer Hbot, go to CoreXY. - 9 years ago
Edit: After things I have completly forget to try. Move -0.1 and 0.1 mm in X and Y ... seem that I have 0.1mm of backlash in Y direction... need to know why in Y and not in X.by zelogik - CoreXY Machines
Re: Atfer Hbot, go to CoreXY. - 9 years ago
So i have try your marlin package jand, and ...... It's the same problem, I have try to rotate the part at 45° with slic3r, and the circle come exactly on the same place when printing. So it's backlash. It's not gt2, it's not bearing, it's Iglidur problem. So i have the choice now ... quieter and backlash OR lm8uu and louder printer ... Marlin don't have backlash compensation ....give a tby zelogik - CoreXY Machines
Re: Atfer Hbot, go to CoreXY. - 9 years ago
Thanks all for your interests. I have try 1/4step and i have the same problem. I don't remember to have this problem at first, and i don't remember if the problem have appear when i have changed for igus bush. And then have created a little Backlash. Need to try to rotate file to 45°, i will restart slic3r as cura don't rotate infill :-)by zelogik - CoreXY Machines
Re: Atfer Hbot, go to CoreXY. - 9 years ago
0.9° (400 step motor) DRV8825 put to 16x. Speed set to 100mm/s MAX. (yes marlin don't have double and quad step :-( ). And ramps with arduino mega.by zelogik - CoreXY Machines
Re: Atfer Hbot, go to CoreXY. - 9 years ago
@Jand: Nice print , you don't have the same problems as me. I have installed Marlin, and slice everything with Cura too .... I have checked: - Motor pulley tightening with the motor - perpendicularity of X and Y - different tension of belt - even differente step between X and Y - backlash.... as I can. Now I have choice between: - different diameter of Pulley? - voltage of stepper ?!? - the "roby zelogik - CoreXY Machines
Re: Atfer Hbot, go to CoreXY. - 9 years ago
Bad news ... i have exactly the same problem with the last git of marlin. I thinking a little more it's can be backlash ... Maybe igus bush are quiet but have little more gap. Now i have doubt with what is the problem... Edit: Or it's perpendicular axis problem between X and Y !!! Somebody have an easy way for controlling that ?by zelogik - CoreXY Machines
Re: Atfer Hbot, go to CoreXY. - 9 years ago
hum look interesting... I have seen the first link but seem to be a RADDS. And I have tested with DRV8825 and A49XX ... and the result was the same.(I my memory don't play with me...)by zelogik - CoreXY Machines
Re: Atfer Hbot, go to CoreXY. - 9 years ago
Oups the smallest GT2 alu pulley i have is 16teeth I have already seen the RADDS & 128steps .... but grrr I need to stop to spending so much money on that :-pby zelogik - CoreXY Machines
Re: CoreXY/Hbot implementation bug? - 9 years ago
@ Hux Flux: Repetier or Marlin for the firmware ?by zelogik - Repetier
Re: Atfer Hbot, go to CoreXY. - 9 years ago
@jand, dont need to print exactly the same object. Can you take a picture of a top of print or/and a rectilinear filling during printing :-) Repetier bug... Maybe tomorrow i will give a try with marlin.by zelogik - CoreXY Machines