With so many models and variations around... What is the state of the art? What are the current extruder-models and wich ones are obsolete? What are the official extruders of Mendel and MiniMendel? Is there some kind of family-tree to see wich one developed from wich? Is there a roadmap or requirements-document or sth. for the next official extruder?by MarcusWolschon - Plastic Extruder Working Group
Wade Wrote: ------------------------------------------------------- > How thick are the walls of your hollow objects? > I'd be curious to see if the technique works with > more solid objects - a hollow build does not have > many layers for the thermal shear stress to build > up in. between single-walled and 2mm. But that´s nothing that affects warping. The V-shaped cut in the botby MarcusWolschon - Let's design something! (I've got an idea ...)
here is a small patch I just sent to enrique to give the total build-time in hours, minutes and seconds and to calculate the weight of extruded ABS based on the volume: (statistics.py) self.addLine( "The total build time is %s h %s min %s s." % ( int( round( self.totalBuildTime / 3600) ) , int( round( (self.totalBuildTime / 60) % 60 ) ) , int( round( self.totalBuildTime % 60 ) )by MarcusWolschon - Skeinforge
The first print has been sold to a local from the Chaos Computer Club here in town. So if something is missing, I´m nearby to help out. I will print a second set using the already improved models after we can confirm that the first print is indeed complete and that filling it with epoxy works out well.by MarcusWolschon - Plastic RepRap Parts for Sale
While double- and tripple- checking the 3d-model of the assembled MiniMendel, I found quite some parts to be missing. Sorry. S*** happens. I´ll reprint them asap. I´ll also rename the parts with the (hopefully) correct number they are needed. Should in the end any part still come up missing or wrong, I´ll of cause reprint them. base-reinforcement-clamp_2 is needed 3x despite not being named "3by MarcusWolschon - Plastic RepRap Parts for Sale
nophead Wrote: ------------------------------------------------------- > It might be easier to fill them with PU assuming > they don't leak. It is much less viscous than > epoxy. It does get hot though so you might get > some warping. > > > ml Sounds great. With the current model it would leak but they can be made more water-tight easily. So for the moment I´d stick with eby MarcusWolschon - Plastic RepRap Parts for Sale
VDX Wrote: ------------------------------------------------------- > Hi Marcus, > > > > and/or > > > you embedd some rods or fibres for the needed > > > rigidity. > > > > Way ahead of you. > > The parts already have added > support-structures. > > > > For some flat parts I´ll add additional ones > as > > they flex too mby MarcusWolschon - General Mendel Topics
VDX Wrote: > ... hotglue (mostly EVA) is really elastic, so a > harder filling material would be better ... agreed > and/or > you embedd some rods or fibres for the needed > rigidity. Way ahead of you. The parts already have added support-structures. For some flat parts I´ll add additional ones as they flex too much for my linking (unfilled).by MarcusWolschon - General Mendel Topics
VDX Wrote: ------------------------------------------------------- > Hi Marcus, > > ... have you already tried with infilling the > parts with some 2K-epoxy for getting higher > stability? Not yet but they look water-tight enough to cause no problems there. Someone from my local Chaos Computer Club -group is interested in the parts. I hope to get feedback about how well the epoxby MarcusWolschon - General Mendel Topics
thenoviceoof Wrote: ------------------------------------------------------- > Some questions: > I'm guessing these have holes, probably two so > that you don't get air bubbles. Right? Please actually look at the parts. The upper side is missing. So you just pour your epoxy into it and be done with it. No extra holes. I would not worry about air-bubbles at all. Even with the most air-bubby MarcusWolschon - Plastic RepRap Parts for Sale
stuson Wrote: ------------------------------------------------------- > Hi > > I just joined the forum, wanting to build a > mini-mendel.. If you are interested, I just finished printing a full set of MiniMendel-parts: > What tools do I need and what are the material? Basic mechanical tools should be enough. Some cheap soldering-equipment if you do not get your electronics pby MarcusWolschon - General Mendel Topics
The print is done. The actual parts including rafts weight just 152g (white ABS). That´s half of the MiniMendel and 1/7th of the Mendel. All printed in a single afternoon and a single morning. The printed parts are on sale here:by MarcusWolschon - General Mendel Topics
I´m trying to start a discussion about design-princibles against warping here: Quote I´m currently printing this frame-vertex: With the settings I´m deliberately using there should be serious warping. However, there is practically none. With the V-shaped cuts in the bottom these are 3 separate objects during the important first few layers that keep each other down. (Much like the special thby MarcusWolschon - Let's design something! (I've got an idea ...)
I am done printing a full set of Hollow Mini Mendel version 1.2.2 -parts. They came out really nice. Done in white ABS. Who is interested in these parts? They are mechanically fully equivalent to their solid counterparts. If there is sufficient interest I am willing to batch-produce a number of metric (or maybe even imperial) sets of these after the first set has been successfully assembleby MarcusWolschon - Plastic RepRap Parts for Sale
nophead Wrote: ------------------------------------------------------- > I am confused. At the top of your print it says > 105RPM = 58.8 mm/s I am running the extruder at 115RPM=64,7mm/s of raw 3mm+-0.1mm diameter filament while the head moves with 32mm/s laying an 0.4mm high and 0.7mm wide stream of extruded filament. (sorry, I just had a look at the display and it´s 115, not 105.) Updatby MarcusWolschon - General Mendel Topics
nophead Wrote: ------------------------------------------------------- > If you are feeding at 58.8 mm/s, why are you only > moving at 32mm/s. Surely you should be able to do > the moves at least as fast as the feeds. That > might get the time down so you can print 3 a day > ;-) I tried 55mm/s but the extrusion-width was getting irregular with 350RPM really pushing it. 55mm/s isby MarcusWolschon - General Mendel Topics
Skeinforge-results for: * layer-height=0.40mm * 5mm/2% raft-size * movement-rate: 32mm/s * feeding the RepMan with 105RPM=58.8mm/s of filament at 228°C base-reinforcement-clamp_2 (x1 with raft) * The total build time is 150 s. * The total distance extruded is 2463.0 mm. * The total distance traveled is 3667.2 mm. * The version is 2010-02-12 * The volume extruded is 0.48 cc. bowden-extruder-basby MarcusWolschon - General Mendel Topics
First print: frame-vertex_6off 1x with raft * single shelled object * The total build time is 860 s = 14min. * The total distance extruded is 15668.4 mm. * The total distance traveled is 20595.5 mm. * The volume extruded is 3.1 cc. frame-vertex_6off 6x without raft * single-shelled object * The total build time is 3213s = 53min for 6 frame-vertex. * The total distance extruded is 72765.3 mmby MarcusWolschon - General Mendel Topics
My printer is working again and I´m currently trying out the Hollowed Mini-Mendel I designed. I plan on filling the printed parts with Epoxy. If all goes well it should be possible to print a Mini-Mendel in one day and then fill it with epoxy in a matter of minutes to get strong, good parts. The idea is to save a lot of time, material and warping with using the epoxy as a trivial post-productioby MarcusWolschon - General Mendel Topics
KrisC Wrote: ------------------------------------------------------- > While the Catalyst may not be the printer suited > to every need, it does fill an important niche. > > So in order to leverage some community innovation, > where do we want to discuss improvements? How > about here. Do you have some website stating what "Catalyst" is, who is developing it and what the staby MarcusWolschon - General New Machines Topics
FERRY Wrote: ------------------------------------------------------- > I have a lot of free 3d models for MAYA and 3DSMAX > in my site . Low > poly game models are also available here.. Updated > everyday.. 3D Models are also posted on requests > in my shoutbox from the visitors.. > > FERRY Nice models. You site does not say anything about the license of these models. Whatby MarcusWolschon - 3D Design tools
Who is in your team?by MarcusWolschon - Kartik M. Gada Humanitarian Innovation Prize
"Servo controlled" does not sound like the force or precision required for a tripple extruder. I´m looking forward to your design. Why didn´t you use the "lets design sth."-board as you seem to not have anything yet? (At least you gave no link to any project website, requirements-document or similar.)by MarcusWolschon - Kartik M. Gada Humanitarian Innovation Prize
I´m working on a shelled version of the Mendel one of these days. Just like I did for the MiniMendel. - frame vertex already done in a first version - shelled MiniMendelby MarcusWolschon - General Mendel Topics
Nicht nur Hilfe sondern meist braucht man zum Thema auch einen Betreuenden Professor dem das Thema gefällt und der es betreuen will.by MarcusWolschon - Altes Forum
And here is the thread for it on the BfB-forum.by MarcusWolschon - General New Machines Topics
RepRapParts Wrote: ------------------------------------------------------- > Hallo Marcus, > > also meine Einstellungen hab ich dir mal > angehangen. Ich weiß nicht ob die Feedrate zu > hoch ist ?! Wow 64mm/sec ist schon schnell. Ich bin hier für low-quality gerade von 16 auf 32mm/s und 0,4 statt 0,25mm Layer-Höhe hoch gegangen auf dem RepMan. Bei 64mm/s hab ich die Kalibrierungby MarcusWolschon - Altes Forum
Wie wäre es mit einem ABS-Recycler? Den kann jeder hier gebrauchen und es hätte den richtigen Umfang.by MarcusWolschon - Altes Forum
Kaische Wrote: > Gibt es da bisher nur Ideen oder schon direkt > Adapter zum ausdrucken? Bisher hab ich keine Nema > 14 Motoren gefunden die sich einigermassen zeitnah > und kostengünstig nach Deutschland liefern lassen > und meine Nema 17 kann ich sicher nicht ohne > Anpassung direkt verwenden. Ich meine da einen auf Thingiverse gesehen zu haben. Weis aber nicht mehr in welchby MarcusWolschon - Altes Forum
RepRapParts Wrote: ------------------------------------------------------- > so hab mal den Frame Vertex gedruckt dauert einer > 15 min und ich würde meinen die Festigkeit > könnte so ausreichen hier mal ein Bild. Die > Druckzeit hat sich somit um die Hälfte verkürzt. Okay, danke für das Feedback. PS; Was für ein Extruder war das und auf welche Einstellungen kallibriert? Das siehtby MarcusWolschon - Altes Forum