Show all posts by user
(RepRap en Français)
I assume that these are two PG35 running simultaneously ?
Never broke a ceramic tube ?
What is the overall weight of this extruder/hotend setup?
by
PRZ
-
Delta Machines
I already written that, but I run two deltas:
D-Box, 24V, controlled fan 5V, utility fans 12V, hotend fan 24v, nearly dead, will be replaced by 5V fan
Lily, 19V, controlled fan 5V, hotend fan 5V, utility fan 12V (adjusted to 10V), future heatbed 12V.
Given my bad experiences on Fisher, I was absolutely willing to have quality silent fan for the hotends and part fan and choose Sunon 'Maglev' fa
by
PRZ
-
Duet
On the Fisher Beta, I made a mod for better filament path. It may not be applicable 'as is' for the Fisher 1, as it needs to rotate the extruder and clearances are tight.
Details here :
by
PRZ
-
Fisher
Even if it is not used for oiling filament, it is useful to clean the dust on filament to have a sponge box (here printed in PETG):
Thread tube with a M4 nut
Thread box with a M4 screw
Clean tube with a 2mm bit - beware to well remove shavings
And the STL file
by
PRZ
-
Delta Machines
1/ The behaviour at beginning of printing depends from the G-code you define in your slicer at the beginning of your prints.
Have a look at it. It may be possible that homing macro deselect the tool, so you may reselect tool to reactivate it (T0) at the end of your start printing code. Have also a look at your homing macro. IN Slic3R, it is in Printer tab, option 'Custom G-code'
Note that when
by
PRZ
-
Duet
Delta design and CoreXY share the objective to minimize mobile mass. Installing heavy head defeat a bit this purpose, which doesn't mean that will not work, but that you will loose one of the advantage of the design, so reducing speed/acceleration ability.
I am a partisan of structural boxes, which makes very stiff structures, either for Delta or CoreXY, but stiffness shall also be improved in th
by
PRZ
-
Delta Machines
Bed radius is the radius where the head is allowed to go, this is now called 'safe' radius. It does not have any effect on the movement calculation, except to limit it. Practically, this means this machine does not have any travel safety.
The Delta radius is what is important here and 160mm is large for a 310mm arm, but plausible.
Quotedougal1957
QuotePz212
this is the m666 and m665 comands in
by
PRZ
-
Duet
Found a video with A diamond on a Rostock max :
and flying extruders !
by
PRZ
-
Delta Machines
Quick and dirty trial, something like that (shall have bolted cups, to be printable without supports).
Top ring shall be reinforced to cope with moment created by tensioning wire (which is quite important), or set bottom bracing (with 3mm rods ?).
Offset 30mm Arm space = 84mm, balls 8mm (may be increased to 10mm) , tensioning wires (This is the data of my D-Box)
No magnets -> low weight
by
PRZ
-
Delta Machines
So you may end up with an effector 350~400g depending arm attach type and fan installation, which is quite on the heavy side.
The Ultibot extruder weight ~190g and I have no data for their overall effector weight, so we are somewhere above that (don't forget bowden tubes do also have a weight). Workable, but with a fairly strong machine.
by
PRZ
-
Delta Machines
The question is what is the weight induced ?
The initial Kossel had an effector with J-Head weighting 40~50g all included (no fan), super light, which allow it to work with a relatively weak structure.
The Fisher effector weight is ~ 85g with one radial fan, with a relatively small machine, so average stiffness.
Larger deltas with multiples fans and magnets (which are quite heavy) may have effec
by
PRZ
-
Delta Machines
Hercek, very interesting, I just looked at the A4988/4982 datasheet and the blanking time (period where the sensing is neutralised to avoid false measurement) is 1 microsecond. Minimum on time may be a bit higher, but is not listed. That is a lower value compared to the values you list of 3.75 microsecond, meaning in similar conditions, A4988/4982 can operate a current much smaller than the DRV88
by
PRZ
-
Delta Machines
While you could find very valuable info in forum threads, their organisation is uncontrolled. The only way to have organised info is to report to the Wiki what is told in threads. But not many people are doing that, so information remains mostly scattered.
On this particular topic, I have created the page 'Choosing stepper for a delta' which doesn't go in details, but try to define an appro
by
PRZ
-
Delta Machines
This geared extruder was designed to reuse rePrapPro parts with the M3 hobbed insert, initially for the Fisher. There is a variety of mounts, but not yet anything for Flying extruder.
There is an option to use same bearings as other RRP extruders (MR93).
The RepRapPro stepper being relatively light, this is a good option for flying extruder.
The gears are thicker than RepRapPro gears (the
by
PRZ
-
Delta Machines
There are many discussions about 8825 drivers on this forum and on google Deltabot forum.
The general agreement was these drivers shall not be used for printing (nor for CNC).
Unfortunately there are some boards based on it.
A nice paper about the problems is here :
by
PRZ
-
Delta Machines
In the RepRap G-code page, I added a chapter about G-code typical parameters to help to grasp the logic behind :
by
PRZ
-
Duet
Ca marche dans OpenScad, il faut télécharger la dernière version :
Ensuite, on charge le programme delta_simulator.scad.
Le programme n'a pas besoin d'autres fichiers, ceux-ci sont juste des jeux de données correspondant à des exemples.
La touche F5 démarre la simulation - c'est un peu lent la première fois.
Pour jouer avec les paramètres, il suffit de les modifier et de relancer F5 pour avoir
by
PRZ
-
RepRap Groupe d'Utilisateurs Francophone
Pour la calibration des convertisseurs analogiques (ADC), tout ce que j'ai c'est ça pour RepRap Firmware.
Pour Marlin, Je n'ai aucune idée comment on fait.
Quand j'ai fait cette calibration, j'ai trouvé des erreurs de 10 à 20°C (en plus et en moins), pas vraiment négligeable... d'autant que ça s'ajoute aux erreurs des thermistors.
by
PRZ
-
RepRap Groupe d'Utilisateurs Francophone
Le post sur lesimprimantes3D est intéressant, mais leur recommandation de descendre le tube en téflon ne me parait pas très opportune. C'est perdre tous les avantages d'une hotend tout métal, et quand on surchauffe le téflon, ça n'est pas très bon.
J'avais vu un post ou le tube de coupure thermique installé dans le mandrin d'un perceuse était mis en rotation dans du sable pour le polir, c'est pe
by
PRZ
-
RepRap Groupe d'Utilisateurs Francophone
Il y a PLEIN de raisons pour lesquelles ça peut bloquer.
- Le ventilateur sur la hotend doit tourner en permanence à fond et être câblé directement sur l'alimentation, sans possibilité de le couper.
- Ton tube est court, donc il faut un retrait assez faible, combien est configuré sur ton trancheur ? la longueur de ton tube n'est pas trop importante, pour info, sur ma D-Box, le tube fait 680mm e
by
PRZ
-
RepRap Groupe d'Utilisateurs Francophone
Bonjour, il n'y a pas de limite pour l'angle lorsque l'effecteur s'approche de la colonne, qui peut dépasser la verticale sur certaines conceptions, tant que l'effecteur ne tape pas dans les colonnes.
C'est le cas sur la Rostock max, dont les courroies sont noyées dans les colonnes, et l'effecteur peut donc 'raser les murs'. Comme l'offset des articulations est important, les bras dépassent la
by
PRZ
-
RepRap Groupe d'Utilisateurs Francophone
Ultibots have a quite good and complete mechanical kit, why didn't you ask them to price a kit without electronics ?
If you use a Duet, as the ultibot is a Kossel derivative, the configuration differences vs other Kossel may be quite limited.
The builda3dprinter.eu kit is with 15mm profiles, quite small for a XL printer, not recommended with that size. And only 8 bits electronic, but you can ord
by
PRZ
-
Delta Machines
Not remember well, but there was something else than the scrolling, may be due to the method to transfer the file to the web interface, but that may have been modified, as there was many changes in protocols recently.
And for truncated file with M503, as an example this file (which is pretty standard, derived from the Fisher) :
- tested on 1.09r dc42, another test on 1.10+4-dc42 gives simila
by
PRZ
-
Duet
I don't know what is the origin of the problems with long config.g files, but it seems that it is difficult to edit them in the web interface and Chrishamm already mentioned to users with long files to shorten them by stripping some comments.
Also, but that is not a big problem if web editing is complete, when you run M503, the file is truncated.
I stripped info from my config file for those
by
PRZ
-
Duet
I find the Smoothieboard configuration file easier to read than RRF one, but ultimately, this is a question of clear documentation.
I think the best documentation is the one which is in the configuration file itself.
The problem yet is as it seems the whole config.g file is loaded in memory, this file shall be maintained to minimal size and problems linked to large config.g file have been discu
by
PRZ
-
Duet
The 1.09b-DC42 firmware is fairly old and there was many evolutions since, notably with the dialogue between firmware and DWC.
It may not work for DWC version further 1.06 or 1.07. The pace of firmware update is high, but with the last versions, firmware update is a breeze (upload firwmare file with web interface, accept update and you are done one minute later after a on/off). But with your vers
by
PRZ
-
Duet
I extracted (and completed) the paragraph about filtration in health and safety page on the Wiki, to make it an independant page :
Gaseous pollutant filtration
I would like to have photos of your systems - please note that the license of the wiki is GFDL 1.2
DjDemonD, you already published a photo, can I have another taken a bit more sideway, where we could see how the filter itself is instal
by
PRZ
-
General
Group B, in your posts, isn't there a mix between 'Y' (or star) and Triangle (or delta) structure ?
The link given by OP for the 'Y' structure is clear about what is meant.
Your build is indeed, hexagonal, and you can directly add panels or cross-braces
by
PRZ
-
Delta Machines
The table is in the second post of this thread:
by
PRZ
-
Duet