RepRap 3DR Delta printer Released

Re: RepRap 3DR Delta printer Released

Nicolinux — Sun, 19 Jul 2015 16:22:01 -0400

I sold mine on eBay and will build a tall 3DR instead...

Re: RepRap 3DR Delta printer Released

Tennysballs — Sun, 19 Jul 2015 11:39:48 -0400

Ha...Ha ha. You're good. That's exactly what it is :)

Re: RepRap 3DR Delta printer Released

Nicolinux — Sat, 11 Jul 2015 12:47:45 -0400

Hi,

Let me guess - the M3D printer? :)
If everything else fails, take a look at 3D Hubs. I am sure you'll find someone near you. [www.3dhubs.com]

Re: RepRap 3DR Delta printer Released

Tennysballs — Sat, 11 Jul 2015 09:30:05 -0400

Hi all! I've been following this thread for a while and decided to start building one. I recently got my first printer- one that recently got to production from kickstarter. I started printing parts and much to my dismay, it doesn't perform anywhere near as well as promised. Besides that, The print area is so small that I have to redesign Rich's parts in Solidworks into smaller interlocking pieces, creating more margin for error and less structural integrity. Not worth it. I have all the hardware and am dying to get past this printing bottleneck. Is there anyone(preferably near/in Utah) that would be so kind as to accept my list of parts I need and work on figuring a quote to print them?

Re: RepRap 3DR Delta printer Released

mafiu — Thu, 23 Apr 2015 09:27:20 -0400

Excellent - thank you dolphinboy I've had problems finding them online - searching for the wrong thing. Thats great. Thanks

Mafiu

Re: RepRap 3DR Delta printer Released

dolphinboy — Mon, 20 Apr 2015 08:54:56 -0400

The ones I designed are in Thingiverse:
http://www.thingiverse.com/thing:194631

Re: RepRap 3DR Delta printer Released

Nicolinux — Mon, 20 Apr 2015 08:01:13 -0400

What do you mean?

Re: RepRap 3DR Delta printer Released

mafiu — Mon, 20 Apr 2015 07:57:16 -0400

Hi there.

I love the idea for these extenders - have you published the stl files anywhere?

Mafiu

Re: RepRap 3DR Delta printer Released

Nicolinux — Thu, 06 Nov 2014 07:08:26 -0500

Cool, thanks. That's really easy for a change :)

Re: RepRap 3DR Delta printer Released

Paul Wanamaker — Thu, 06 Nov 2014 02:35:26 -0500

Nicolinux,
Its really easy. Just power it up and bring a magnet close, one face and then the other to the sensor.
The endstop should light when the magnet is facing one way, just mark that side.

Re: RepRap 3DR Delta printer Released

Nicolinux — Wed, 05 Nov 2014 08:42:29 -0500

Ok, thanks for the info. I ended up keeping the rods and having a smaller build volume. I can live with that.

I have another question. How does one know/test which way the magnet for the hall sensors has to go? I have not powered up the board yet...

Thanks.

Re: RepRap 3DR Delta printer Released

andrea.rimo — Fri, 26 Sep 2014 16:58:33 -0400

Hi Stefan, i had the sane problem, tried different joints with no luck. I ended up rebuilding the push rods 200mm long.

Re: RepRap 3DR Delta printer Released

Nicolinux — Thu, 25 Sep 2014 18:39:32 -0400

Hi,

Old thread is old. Let's see if someone with a 3DR still sticks around.
I have a question about the rod lengths and the traxxas (or similar) joints. Are you able to move the head right to the outer edge of the bed? With the swivel joints I have bought, I can only move it to approx. 20mm away from the outer edge thus loosing build volume. That's due to the movement angle of the joints. So to put it short - with wich kind of joints (and rod lengths) are you able to move to the head to the outer edge of the bed?

Thanks.

Stefan

Re: RepRap 3DR Delta printer Released

TheTrashMan — Sat, 30 Aug 2014 19:54:13 -0400

Hey guys I am still having trouble getting my extruder motor to turn. I connected the motor to one of the other axis and it turned fine, so then i switched stepper drivers and again it worked fine. So i am thinking maybe i didn't define the extruder pins on the board correctly? I am using rumba. Any ideas?

Re: RepRap 3DR Delta printer Released

andrea.rimo — Tue, 26 Aug 2014 05:20:00 -0400

@payala
I checked today the spare nozzle I bought along with the hotend, which should be identical to the one installed...
the length of the 0.5 orifice is 1.96mm, so it's out of the specs found on (http://reprap.org/wiki/J_Head_Nozzle). in that page it says:

Quote
reprap.org, chapter 8.2.2
Nozzle orifice length
Mk IV hot-ends (up to the middle of May 2012), and earlier models, had a nozzle orifice length of approximately 1.25mm.
Mk IV hot-ends (after the middle of May 2012) and Mk V hot-ends have a nozzle orifice length of approximately 0.50mm.
Note: Due to the nature of 5c collets, the nozzle orifice length can vary as much as 0.25mm.

moreover, it's missing the 1.28 mm flat part around the orifice, so it practically ends with a sharp point with a flat of only 0.7-0.8mm diameter.
tonight I am going to drill the 2mm hole a little further to allow the orifice length to be reduced to 0.5mm and create a flat of about 1.2 mm. I'll report back if that worked.

A.

Re: RepRap 3DR Delta printer Released

andrea.rimo — Mon, 25 Aug 2014 17:12:46 -0400

today I contacted the tech support at RRW and they have suggested to try a manual extrusion with just the heating block. I started cleaning the hot end by heating it up to 230° and then pushing out all the filament using compressed air: at 6 bars the pressure could barely push out the residue, something like 1mm of extrusion every 5 seconds. yesterday I did the same thing with a J-HEAD from NOPHEAD's kit and it just blew all the residue plastics out in a matter of 10 seconds. indeed the printer works much better with NOPHEAD's j-head, so I think there is indeed something different between the 2. the explanation of the longer nozzle makes sense, as from what I read on this forum, the longer calibrated diameter makes it for less die swell, at the expenses of a higher extrusion force.
indeed I remeasured the extruded thread and found to be 0.5-0.51mm... today at work I also measured the nozzle, and found it to be 0.498, so die swell is really limited.
to reduce the nozzle length I could use a 2mm drill bit to shorten the 0.5mm hole to about 0.5mm, but I believe the risk of passing on the other side is high.

on the other hand I have a cart at E3D webstor filled with 1 kit, 2 extra nozzles and a spare heat barrier, just waiting to click enter.... its more that £100 and I'm a little reluctant to spend all that money for an hot end, but I'm really tempted...

by the way, If anyone is interested, here a video of the auto bed levelling with FSR...
[www.youtube.com]

Re: RepRap 3DR Delta printer Released

ekaggrat — Sun, 24 Aug 2014 23:38:41 -0400

@andrea

even for me after struggling with a j-head requiring too much force i change the extruder to a mk8 drive wheel which solved the problem to a great extent but too be on a safer side i am going to change my j-head to a E3d v6 as soon as i recieve it.. I have a self built shorter e3d (35mm length ) working on my mendelmax and that made a huge difference to the print quality from a clone j-head ..

if by any chance you are using one of the clone chinese j-heads just throw them out of the window. They are not worth the waste of time and filament.

Re: RepRap 3DR Delta printer Released

payala — Sun, 24 Aug 2014 18:07:46 -0400

Wow Andrea, congratulations and welcome!

It's good that you say about the stuttering, I also had noticed that, but I hadn't tracked it down. I'll try what you suggest, and maybe we should start talking about a more powerful platform...

About the J-Head, I had the same problems, a lot of force required to push the 1.75mm filament. I also had some leakage problems on the J-Head which I managed to solve, but it never worked as it should. I contacted Brian, and he tried to help me to solve the leakage, but never offered to change the extruder for the stuck extruder. So I gave up and I made an E3D and it has been working MUCH nicer! The one single thing that I have seen to improve results is the extruder orifice length, it should be around 0.5mm (the depth, not the diameter) if you have the slightest (0.5mm) more, it takes a lot more force to extrude. I think the E3D V6 will probably work very well too.

By the way, for me, the best way to measure the extruder orifice diameter, is to insert a small drill bit of the same size. But it is not very common to have a set of sub 1mm drills.

Cheers!

Re: RepRap 3DR Delta printer Released

andrea.rimo — Sun, 24 Aug 2014 17:46:09 -0400

Hi, My name is Andrea and I have built a 3DR over the last months. I am about finished, now I have FSR auto bed levelling, fully graphic smart display. I printed the parts myself with my Mendel90, a kit bought from Nophead and built last year. I want to share my experience with the community, hoping it will be of help for users that are starting to build one and hopefully to get some advice from more experienced users on some issues I have.

To start off I had a problem with the pushrods. I build them 150mm but this was enough only to print 130mm, over that the traxxas joint would be at its most angled position and would not go further. my solution was to rebuild them with a longer rod. I fist started with 220mm, but it was too long, I then rebuild another set 200mm. these work fine, the only drawback is the max Z is not reduced to 140mm.

I added the FSR bed levelling, using ZMIN endstop connection. to increase the response I built 3 bed supports with integrated pods to increase the sensitivity of the sensors. (http://www.thingiverse.com/thing:439852). to get them to work I modified the FSR version of marlin from Johann (http://github.com/jcrocholl/Marlin/tree/fsr).

I had troubles with the printer stuttering during moves, creating blobs in the print. After googling it seems like the RUMBA board is a little underpowered to drive a fully graphic LCD while doing the math to keep the delta running, I "kinda" solver the issue lowering the DELTA_SEGMENTS_PER_SECOND to 50, but this figure seems a little low.

I initially started the project wanting to use 3mm filament as I have a good stock, but this failed due to the difficulties to force tightly wound filament into the bowden tube. so I switched to 1.75, bought some filament and a J-HEAD for 1.75mm filament. I ended up with another problem, even worse than before... for some reason that I have yet to figure out, the filament is very hard to push out of the nozzle, even at 230°C, so I can only print at incredibly low speeds (<10mm/s), otherwise the extruder slips. I use the geared extruder that was included with the 3DR files, and I do not understand why this happens. I am thinking either a defective J-HEAD or a bad filament. I bought both on RepRapWorld, and the filament I got was 1 spool red and 1 spool gold. even printing very slow is a problem, the pressure on the filament becomes so big that ooze is unacceptable. I tried putting back on the 3mm J-HEAD I bought from NOPHEAD, with some faberdashery filament and it works better, even if the ooze is still present (retraction 3mm)... and this one has a .4mm nozzle, while the RRW one has a .5 nozzle. maybe the nozzle is smaller than what was declared? how do I measure a 0.5 or smaller hole?

So, while I look for some solution for the above problem, I am also looking for a neat fan solution, to cool down PLA while printing and keep the J-HEAD from clogging during long prints. (I am really thinking of getting a E3D V6...)

so this is my story so far, any suggestion or comment is greatly appreciated.

Re: RepRap 3DR Delta printer Released

V.S.P. — Wed, 20 Aug 2014 11:50:03 -0400

Update about my last situation.....
The problem with extruder is resolved.
Main mechanical problems are resolved to, but.....
When i begin to print, on brim and on first level everything going fine and on second level.....in time to time the filament stop to go through extruder! Some strange voice there is available to....like a stop to go out from nozzle and motor fight to push the filament out!
Any advices or shared experiences?
Thank you in advance!

Re: 3DR Delta printer and Melzi V2.0

V.S.P. — Tue, 19 Aug 2014 14:49:52 -0400

Thank you so much,
I check the data there...seems to be so low - just like you say!
I go to adjust there...after end i'll call the results ;)

Re: 3DR Delta printer and Melzi V2.0

payala — Mon, 18 Aug 2014 10:54:52 -0400

I currently don't know because I'm looking at this from the phone, but this got me thinking; shouldn't we put information like this, together with slic3r config, calibration, etc in a wiki page so everyone can profit from it? does anybody know where would be the best place?

Re: 3DR Delta printer and Melzi V2.0

adavidm — Mon, 18 Aug 2014 10:25:43 -0400

What is the extruder steps per mm set to in the firmware and/or EEPROM? It sounds like this is set too low.

adavidm

3DR Delta printer and Melzi V2.0

V.S.P. — Sat, 16 Aug 2014 06:59:27 -0400

Hi everyone :)

Just finish mechanical part of build and go to use firmware on Melzi V2.0 and have a strange issue....
My extruder, extrude a 1/5 (or reverse the same) of length given through Printrun. Also - speed is so slow.....even i say 350 mm/min.
Here are some pictures to.....
[attachment 38440 MelziV2.0.jpg]
[attachment 38441 Extruder.jpg]
Any help will be appreciated ;)

Re: RepRap 3DR Delta printer Released

TheTrashMan — Fri, 08 Aug 2014 19:30:52 -0400

great got that sorted. I now have a problem of my extruder motor not moving at all. It is plugged in but it just sits there idle.,

Re: RepRap 3DR Delta printer Released

misan — Fri, 08 Aug 2014 16:23:35 -0400

Have a look at printer settings [manual.slic3r.org]

Re: RepRap 3DR Delta printer Released

TheTrashMan — Fri, 08 Aug 2014 14:11:53 -0400

Quote
misan
First thing is to tell your slicing software to position the parts at 0,0 (not at 100,100 like many cartesian printers with 200x200mm beds).

But when you home your printer x and y should be at 0,0.... what firmware are you using? have you tried starting with Richard's?

How do i tell my slicer to do that? I am using slic3r

Re: RepRap 3DR Delta printer Released

misan — Fri, 08 Aug 2014 13:22:51 -0400

First thing is to tell your slicing software to position the parts at 0,0 (not at 100,100 like many cartesian printers with 200x200mm beds).

But when you home your printer x and y should be at 0,0.... what firmware are you using? have you tried starting with Richard's?

Re: RepRap 3DR Delta printer Released

TheTrashMan — Thu, 07 Aug 2014 19:36:37 -0400

Hey guys I just finished building my 3DR and i have a question for you guys: I'm using repetier host, and after i home the machine my z value reads correct(219 mm) But my x and y values are at like 85 mm and -85 mm. I think this is my problem because whenever i try to print the machine extends in a direction too far and doesn't stop until I power it down/ cancel the print. Ant thoughts? I'm sure its just something I am missing. Thanks

Re: RepRap 3DR Delta printer Released

geoffs — Fri, 06 Jun 2014 03:15:37 -0400

Love the 3DR!
I'm looking to build a delta (I have an Ord Hadron) but I want to use makerslide to do this.
Has anyone else build a variant of the 3DR using makerslide?

I'm looking at the necessary mods to the CAD files but if someone has already done all the hard work ...

Regards
Geoff