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My Replikeo Prusa i3 Rework Build

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vegasloki
Re: My Replikeo Prusa i3 Rework Build
June 29, 2014 02:12AM
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gadget_greg
Thanks for all that! I'm printing with PLA, my fan is on D9, and it is running non-stop.

Also, I did an extrusion test and no matter how high I seem to set the steps-per-mm I'm still getting between 73mm and 82mm when I call for 100mm. I must be missing something.

The options for fan tuning are in your slicer. There should be an option for always on or auto cool. Where and how you set it depends on the slicer.

Not responding to your changes means the firmware likely isn't seeing your changes. It could mean that if you are sending them via gcode the EEPROM feature isn't active. If you are saving them in a config file and recompiling the firmware make sure if are saving the file if you are using an external editor before you compile it. Also make sure the motor is connected to the right driver and that you are editing it to the proper place in the file.
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gadget_greg
Re: My Replikeo Prusa i3 Rework Build
June 29, 2014 02:50PM
Thanks for the input.

I'm making the changes in the Marlin firmware via the Arduino IDE. The changes have been compiled and uploaded and are present and visible on the printer's LCD.

I'm not sure what's up with the fan since Slic3r appears to be configured properly using auto-cool and, IIRC, default settings. I'm not terribly concerned with the fan running all the time unless it's going to affect my print quality.
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esponda
Re: My Replikeo Prusa i3 Rework Build
June 30, 2014 08:26AM
I received my kit last week, finally. Everything is ok, I just got a bad stepper ( no continuity in 1 coil) ; anyone received a bad part and got a replacement as soon as you report it to them?
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gadget_greg
Re: My Replikeo Prusa i3 Rework Build
June 30, 2014 02:29PM
Several people have gotten broken or defective parts and Replikeo has sent out replacements right away from what I understand. I had one minor broken part, the z-endstop holder, but I didn't bother to ask for a replacement because I found one with a better design and just printed that instead. smiling smiley

Good luck on your voyage. The folks in this thread are very helpful. smiling smiley
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Bratan
Re: My Replikeo Prusa i3 Rework Build
June 30, 2014 03:19PM
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gadget_greg
For lubrication: [www.reprap.org]

I've been using a silicone lube or Duralube. The silicone is more of a penetrating-type lube, whereas the Duralube is more of a PTFE-type lube.

I'm not sure where you're talking about on the spool holder but there was a light layer printed adjacent to the bearing, creating a barrier between the bearing and where the shaft runs. I just cut it away. I also had to trim with my dremel to get the bearing to fit properly. It works get though!

Did you have any luck getting your extrusion right? I'm getting between 72 and 82 mm extruded when I called for 100, no matter how I set the steps per mm. :/
Thanks for the lube advise!

No, besides that shaft barrier on mine it printed another 2 layer barrier between 2 ridges where should not be a barrier there. it doesn't obstruct anything, but just looks like a glitch, not sure why Slic3r generated it. I'll post picture later on. Do you remember how long it took you to print that hub piece? Cause for me it took 1h:50m, kind of long...

I never got my extrusion exactly right, best I could get is 28mm instead of 30mm. After some point increasing extrusion steps doesn't yield any noticeable result, maybe there's firmware limit or something else I don't understand. But it prints just fine, if a little thick. I'm probably wasting more PLA than needed, but I don't care at this point. Extruder idler came out great and I already replaced broken one.

Quote
esponda
I received my kit last week, finally. Everything is ok, I just got a bad stepper ( no continuity in 1 coil) ; anyone received a bad part and got a replacement as soon as you report it to them?
Check/redo your header connectors. I had headers broken/loose on 3!!! stepper motors.
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Rayton
Re: My Replikeo Prusa i3 Rework Build
June 30, 2014 04:39PM
I am considering buying a replikeo iron kit, but I saw on the wiki page that the single sheet frame is supposed to be 6 mm thick and the iron one is only 3 mm thick. I was wondering if the iron frame has proven to be sturdy and hold up well. This will my be my first time building/buying a 3d printer, and I am trying to keep it as cheap as possible while still getting a decent/good product which is why I am looking at replikeo. If anyone has any other comments or suggestions, those are greatly appreciated as well. Thank you so much
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Bratan
Re: My Replikeo Prusa i3 Rework Build
June 30, 2014 05:05PM
Rayton iron is fine. I had same concernes, but it's very sturdy.
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Rayton
Re: My Replikeo Prusa i3 Rework Build
June 30, 2014 05:23PM
Thanks. Has the kit in general worked out well for you?
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Bratan
Re: My Replikeo Prusa i3 Rework Build
June 30, 2014 05:25PM
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Rayton
Thanks. Has the kit in general worked out well for you?
Yes, I had some issues, but considering price I'd say it's worth it.
I had bad connectors on 3 stepper motors, bad header on one of the thermistors, bad connection on the hotend, and as almost everyone else here mentioned carbon fiber sheet for the heatbed is garbage, you'll need to get a piece of glass if you want bed to be evenly leveled.

Greg, here's the glitch I was talking about. See those two planes are not supposed to be there, but Slic3r generated them for some reason ...


Edit: Ok I printed second one, and it didn't happen this time. So bizarre...

Edited 2 time(s). Last edit at 07/01/2014 01:59PM by Bratan.
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Bratan
Re: My Replikeo Prusa i3 Rework Build
July 01, 2014 05:26PM
I modified MarkBenson's spool holder to work with 3mm Iron/Steel frame sold by Replikeo. [www.thingiverse.com]
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gadget_greg
Re: My Replikeo Prusa i3 Rework Build
July 02, 2014 03:49AM
That IS weird. Slic3r has a mind of its own. I'm considering trying others but I haven't heard anything particularly good about any of them, frankly.

I lowered my acceleration to 1000 on x and y and my prints are starting to look better. I tweaked the steps per mm for x and y slightly, I'll see if the help tomorrow. I printed supports for the z-axis plate but they don't fit properly. Unless I find another style I'm going to have to modify the the one I found. I've gone through about a half of a spool of PLA and I'm still not thrilled with my print quality... :/
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vegasloki
Re: My Replikeo Prusa i3 Rework Build
July 03, 2014 12:30AM
It's not uncommon to use a kilo or even two to get to a place where you have a good handle on a first machine. Particularly if you build from scratch with no config files.
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gadget_greg
Re: My Replikeo Prusa i3 Rework Build
July 03, 2014 02:07AM
Thanks for that Vega. It's a little frustrating but if it's not uncommon at least I don't feel totally stupid. smiling smiley

I've been working with PLA so far. Do you think I should try ABS or wait 'til I've gotten this thing figured out?
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vegasloki
Re: My Replikeo Prusa i3 Rework Build
July 04, 2014 01:54AM
RichRap has some great posts on calibration and other issues. Here is one with failed print examples and tips...[richrap.blogspot.com]

Here is one with printing tips for Slic3r... [richrap.blogspot.com]

Surf around over there as there is a great deal of info.
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Tech2C
Re: My Replikeo Prusa i3 Rework Build
July 05, 2014 06:28AM
Posted another video with progress updates YouTube Video

Close to being really great, just have to sort out some z-axis banding appearing on the surface of fine prints. The video doesn't show the distortions that well but you get the idea. Here's a link to what others have done to correct it: http://forums.reprap.org/read.php?1,148833,148836,quote=1
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gadget_greg
Re: My Replikeo Prusa i3 Rework Build
July 05, 2014 12:44PM
Nice vid there Tech2C. Thanks for that link about the z-banding too.

My print quality is slowly increasing but I still have a shift occurring in the x-y at a certain level. I'm still not sure why.

I like your idea with the long nut, I may try that too!

I found a few z-frame stabilizers but none fit my setup. It looks like yours will though. Any chance you'd post those models? smiling smiley Maybe the y-endstop extender too... winking smiley
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Tech2C
Re: My Replikeo Prusa i3 Rework Build
July 05, 2014 10:20PM
Here they are gadget_greg spinning smiley sticking its tongue out

I've noticed one of my z-axis stepper motors has a bend in the shaft. This is definately contributing to the banding issue. Not sure if it has been like that since purchase tho.
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Attachments:
open | download - z-axis support_top.stl (101.8 KB)
open | download - z-axis support_bottom.stl (101.4 KB)
open | download - Y-endstop_1.stl (76.8 KB)
esponda
Re: My Replikeo Prusa i3 Rework Build
July 05, 2014 11:35PM
What are your opinions about replikeo's ABS/PLA quality?
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gadget_greg
Re: My Replikeo Prusa i3 Rework Build
July 06, 2014 04:47AM
Thanks! I'll print 'em out tomorrow!

@epsonda, I haven't used the ABS supplied by Replikeo yet. I've only printed with PLA that I bought elsewhere. Sorry.
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gadget_greg
Re: My Replikeo Prusa i3 Rework Build
July 06, 2014 01:31PM
@vegasloki Thanks for those links they were helpful. smiling smiley
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underthetire
Re: My Replikeo Prusa i3 Rework Build
July 06, 2014 08:08PM
Pretty happy, ordered my Replikeo kit late Thursday of week before last, DHL just sent me a text, it will be dilevered tomorrow. 7 business days to my front door. Not bad!
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syl20077
Re: My Replikeo Prusa i3 Rework Build
July 07, 2014 03:47AM
Happy ! I'm happy !
I print my first calibration cube last day ! It is so far of perfection, but not bad at all !
I encouter many problems with the building of my replikeo printer : many disconnected connectors (for E thermistance and stepper motors), 0 ohm HB thermistance, wrong marlin config, ... like everyone ! For the price, Replikeo's kit is very attractive ! But you have to be good for soldering !
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gadget_greg
Re: My Replikeo Prusa i3 Rework Build
July 07, 2014 12:09PM
I guess I really lucked out then because I didn't have to solder anything. smiling smiley
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underthetire
Re: My Replikeo Prusa i3 Rework Build
July 07, 2014 11:30PM
Well, went together fast, but they forgot to send the j head. Whomever cut the plexiglass out did an outstanding job! Tomorrow I start the electronics portion and square this thing up.
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gadget_greg
Re: My Replikeo Prusa i3 Rework Build
July 08, 2014 12:48AM
Nice! I hope they jet that jhead to you right quick! smiling smiley
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gadget_greg
Re: My Replikeo Prusa i3 Rework Build
July 08, 2014 01:16PM
So I tried ABS for the first time last night and it was like night and day, my print quality with the ABS was MUCH better than with PLA. I'm having trouble with the heatbed temperature so I'm going to insulate it underneath with either cork or self-adhesive rubber pipe insulation. I'll also cover the top of the bed until I'm up to temp. I could only reliably get to 105C and adhesion was ok (a small section didn't adhere that well). I also used hairspray as I did for PLA but on my next print I'll try just the glass cleaned well with acetone.

Any other suggestions? My extruder was set to 230C, what are you all using for Replikeo's ABS?
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Allnei
Re: My Replikeo Prusa i3 Rework Build
July 08, 2014 02:44PM
I am using 220°C/104°C for Replikeo ABS

Rubber pipe insulation probably will not be able withstand HB temperature.
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gadget_greg
Re: My Replikeo Prusa i3 Rework Build
July 08, 2014 08:20PM
That sucks, I just bought some (rubber pipe insulation). No cork to be found in my little town. :/
Are you using self-adhesive cork?

Thanks for the numbers! smiling smiley
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Allnei
Re: My Replikeo Prusa i3 Rework Build
July 09, 2014 07:18AM
No just some regular natural cork. I was looking on some number about rubber pipe insulation and technically it can handle 150°C (I don´t know what type you have) so you can try use it. IMHO just put in under your HB and don´t attach HB to mount, heat it up and in case of some problem, just take HB away.
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underthetire
Re: My Replikeo Prusa i3 Rework Build
July 09, 2014 02:10PM
They sent me a tracking number the same day, said the head is on its way. Electronics went fairly smooth, I have it moving around with the LCD, and homing. Had to move the Y switch one header over, and reverse the motor connectors, but that was it. Wanted to get more done last night, but Deadliest Catch was on, so lost an hour there.

Might try a welders mat for insulation, you can find it at any hardware store for torch sweating copper pipe. Im going to my local ACE to get glass cut and will probably pick one up myself. They can handle a lot of heat.
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