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Madmike8's Funbot build #2

Posted by madmike8 
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mike3
Re: Madmike8's Funbot build #2
July 21, 2015 05:46PM
Hello MadMike8,,,,, I love your Funbot and even though I have just started to build my first 3D printer,, The Folgers 2020 i3... and a total newbie .. I would like to do another printer project after I get the one I am building now finished and printing properly,, I think building one from scratch will be a great learning experience, I was going to do their Smartrap core but this looks to be a much more economic learning solution.. question How are the bronze bushings working out,, I have access to some 3/8 drill rod ... can you tell me the lengths that are needed and how many,, also do you have a link to all the .stl files for the printer? how many and what kind of steppers.. Is there a complete BOM anywhere..
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madmike8
Re: Madmike8's Funbot build #2
July 21, 2015 07:15PM
The first post in this thread has the Thingiverse links to all the STL's. On the first page is also a BOM. Cliff who designed the Funbot uses a Direct drive extruder. I prefer the Bowden setup, and my remix mainly is to that end along with Bronze bushing adapters. I definately recommend the bronze bushings. You can get them through Servocity.com, Fastenal.com, or EBay. I used 7x 12" length rods on both my builds. I built #2 a bit different to include the use of the MK3 heatbed, and so far I'm liking it.

So far, both printers have pretty much worked out of the gate. Cliff's pre-setup Marlin files helped with that. #1 has been running reliably for a couple months now. I'm on like the 4th or 5th roll of filament with no hardware failures or changes. I might go back and convert #1 to use a heatbed though, but it's been printing PLA just fine without it.

If you have any questions, just ask.
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madmike8
Re: Madmike8's Funbot build #2
July 21, 2015 07:19PM
Oh, forgot to answer the stepper question.

It uses 1 NEMA 17 per Axis plus one for the Extruder, so 4 Nema17 steppers in total.
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mike3
Re: Madmike8's Funbot build #2
July 22, 2015 08:24AM
Thanks for the information Madmike8 .. on the bronze bushings.. I have an account with Grainger's and they are just minutes from my home.. they have 3/8" ID 3/4"L and 1/2 outside flanged.. will they fit your printed carrier.. and what is the size of the print area ,, and could I enlarge that area a couple inches by lengthening the Rods without changing the printed parts and still be stable.. Thanks Mike
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madmike8
Re: Madmike8's Funbot build #2
July 22, 2015 09:48AM
On build #1, My build area is set as 165X x 165Y x 130Z with v1 parts (it's actually a bit bigger, but that's what I have it set at.). On build #2 with v2 parts, I extended the Y by using the full rod length. I got 170X x 180Y x 140Z. Both builds use 12" rods. As long as you use a Bowden system, so there isn't a lot of weight hanging on the X axis. Use rods instead of the tubes I used. I think you'll be fine extending the build area.

Those bearings will work. I use one bushing per adapter, so 14 bushings...
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madmike8
Re: Madmike8's Funbot build #2
August 07, 2015 09:32PM
I printed the Benchy on Funbot #1 today. I used .3 layer height, .4 nozzle, and Esun PLA. It came out pretty good. It looks even better in person, crappy camera and poor office lighting.




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madmike8
Re: Madmike8's Funbot build #2
August 14, 2015 10:43AM
I think I have my Funbot's Bowden Slic3r settings pretty good now. Supports break away. No stringies. So, I'm going to attach my Slic3r config for others to try.

If you have a Bowden setup, you might give it a try. Remember to set bed size and temp of your filament for your printer.
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Attachments:
open | download - Funbot_Slic3r_config_bundle.ini (6.3 KB)
open | download - Funbot_config.ini (3.1 KB)
madmike8
Re: Madmike8's Funbot build #2
August 14, 2015 01:26PM
Also, as a note. I was so happy with the performance of Funbot #2 heatbed, so I bought a 160mm Kapton Heater for Funbot#1. On Funbot #1 I'm using an Xbox 360 203W PS. So far, so good. Today I'm trying a 8 hour print on it... I'll let you know if the PS can take it.
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Cliff Mellangård
Re: Madmike8's Funbot build #2
August 15, 2015 01:57AM
looks and sounds awesome mike smiling smiley
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madmike8
Re: Madmike8's Funbot build #2
August 15, 2015 09:36AM
Thanks Cliff.

The Xbox PS did great during the long print. I'm pretty happy with it.

I'm printing parts for a #3 Funbot with the #1 Funbot. LOL. I'm going to test some different ideas with it. You really have designed one great printer!


I probably won't start putting it together until I get the SmartCore done though.
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Buk
Re: Madmike8's Funbot build #2
August 30, 2015 09:32PM
to Mike or Cliff,
The fan for the ramps and stepper drivers, should it be mounted to blow air down onto the electronics or to pull air away and out of the enclosure?

Slowly getting it built.
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madmike8
Re: Madmike8's Funbot build #2
August 30, 2015 09:42PM
I mounted mine to blow down onto the electronics.
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Cliff Mellangård
Re: Madmike8's Funbot build #2
August 31, 2015 01:00PM
Blow on the electronics smiling smiley
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madmike8
Re: Madmike8's Funbot build #2
October 26, 2015 12:35PM
Here's a quick thrown together Chimera mount for the Funbot for Djinn.






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Attachments:
open | download - Chimera_Mount1.stl (99.5 KB)
djinn5150
Re: Madmike8's Funbot build #2
October 27, 2015 09:50AM
Nice job man, although I think I'm going to put a spin on it, going to turn 90deg. The extruders will be mounted similarly to your 45 angle on top of the z. So both Bowden's are the same length. The only thing that concerns me is when x is close to the top and home. So I might need to mount extruders differently.
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madmike8
Re: Madmike8's Funbot build #2
October 27, 2015 10:20AM
That worried me too at first, but since the bowden tube is pretty short it handles it pretty well.
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madmike8
Re: Madmike8's Funbot build #2
October 27, 2015 11:32AM
Something like this? I offset it 6mm to the right to center the nozzles.





Edited 1 time(s). Last edit at 10/27/2015 11:36AM by madmike8.
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Attachments:
open | download - Chimera_Mount90v1.stl (100.1 KB)
djinn5150
Re: Madmike8's Funbot build #2
October 27, 2015 01:33PM
Pretty much, but will most likely add a fan mount and or sensor mount
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madmike8
Re: Madmike8's Funbot build #2
October 27, 2015 02:15PM
LOL... I will let you figure it out... Your better at this anyways...
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Attachments:
open | download - Chimera_Mount90.scad (1.2 KB)
djinn5150
Re: Madmike8's Funbot build #2
October 27, 2015 04:09PM
Ha-ha yeah I think we're pretty even, nice work on the funbot/core BTW. Are source for the funbot available anywhere?
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Tempest815
Re: Madmike8's Funbot build #2
November 05, 2015 05:50PM
I guess this place is as good as any to ask...

I'm building the Funbot, and I've run into some real beginner issues. Namely, I think I've stripped the heads of the screws I was attempting to use for the Zbase. So I'm thinking I'm screwed on that part, going to need to get another one. Any way to salvage? They're almost threaded through the base itself, almost enough to tack it in place on the base board. They're hex head machine screws, which is probably where I went wrong.

Also, the rods I'm using. They're mostly rather dull and makes bushings rather hard to slide. Except the z Base, again, they don't fit snugly at all. They're rather loose and will slide right out if I pick it up. I'm trying to follow the guides but I keep feeling like I have questions and I can't ask them. Mostly regarding screws, I think I need to break it down by part rather than screw type.

Any help would be amazing. I've been trying to get this off the ground for months now.
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madmike8
Re: Madmike8's Funbot build #2
November 05, 2015 06:01PM
I'm willing to help. Can you get pics to clarify what your talking about? The Z base uses long screws. Three screw down through the base and tightened with a nut. Then the others screw up through the base into the Z axis stepper (you remove the screws in the stepper). Which ones did you strip?
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Tempest815
Re: Madmike8's Funbot build #2
November 05, 2015 06:06PM
The screws going down to hold the base to the board, I believe they're 25mm so that's probably part of my problem. 25mm just barely pokes through the board on the y axis mounts. I'm gonna end up reprinting it, I think, getting them out seems difficult at best and then there's the issue with the Z axis rods being super loose.
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madmike8
Re: Madmike8's Funbot build #2
November 05, 2015 06:20PM
The rods should be pretty tight. I normally have to tap them down into the base.

I drill the mounting template with a 3mm drill bit then I turn the base over and use a 6mm drill bit to drill about halfway through the board. This makes it possible to use a bit shorter screws. Sorry bad pic as I had drill this one for my other project, and redrilled it for the M8 rod version. But I hope it helps. What is yours printed in? If PLA you might could put a soldering iron on the screw till it softens the plastic and remove it.


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madmike8
Re: Madmike8's Funbot build #2
November 05, 2015 06:29PM
M8 version of the Funbot nearly ready to print. This one has an inductive sensor for bed leveling.





Funbot Autolevel Video
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Tempest815
Re: Madmike8's Funbot build #2
November 05, 2015 08:57PM
Well, I got pictures. I don't have to tap it at all, it just slides right through. It's printed in PLA but I don't think the screws here are worth salvaging.

[imgur.com]
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madmike8
Re: Madmike8's Funbot build #2
November 07, 2015 02:16AM
The M8 version of the Funbot first print.



Funbot M8 First Print Video
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Tempest815
Re: Madmike8's Funbot build #2
November 07, 2015 02:19AM
Out of curiosity, how's the Xbox power supply hooked up? I've got a few laying around, would definitely save me money on a power supply.
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madmike8
Re: Madmike8's Funbot build #2
November 07, 2015 02:59AM
Working from memory... 3 Yellow Larger wires +12V, 3 Black Larger Wires Ground, Small Blue Wire +5V. Tie 5V to Gnd to turn on Powersupply. I use a switch for that. It Powers the Funbot, Hotend, and Kapton Bed Heater just fine. You can also use a USFF Dell Power Brick in the same way.

Kapton Heater


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madmike8
Re: Madmike8's Funbot build #2
December 15, 2015 10:59PM
Printable Pulley for 625zz bearing
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Attachments:
open | download - printable_pulley-625zz.stl (100.7 KB)
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