Doug,
I realized the extruder board was bad when I tried to flash it for
several hours and could not get it to take the firmware. It seemed to
power on fine. I believe the boot loader was not loaded on the board
and that was the cause of the problem I was having. I am glad I got it
exchanged at this point because it had some really poorly done rework
on it. There was a wire soldered on the bottom of the board between
two connections. The soldering job was very poor but I don't that is
what caused my problem. Yes, Ethan at Makerbot was responsive and
pretty easy to work with on the RMA process.
I did not have that much tweaking to do. In fact my build platform was
level without any adjustments. The instructions seemed to indicate
this is the typical case with the ABP. Most of my problems involved
putting something on backward or using the wrong bolt and realizing it
10 steps later.
Here are some thing I would fix if I were building it again. Or thing
that I was darn glad I did at a later step (mostly due to random
luck):
1. My X-Axis motor is backward for X+ and X-. To fix this I would have
to take almost the entire thing apart again to fix it. Luckily you can
fix this on the on board configuration. I would pay better attention
to how this should be installed.
2. When I put the Rods in my X and Y axis I squeezed and pulled on the
rods to align the bearings. The bearing got aligned quite well that
way. There is a video on this page that talks about how to do it after
it is assembled (
http://wiki.makerbot.com/thingomatic-doc:automated-
build-platform-v2-0). I had tried to do what was in the video but it
was not working very well for me. I realized a little later that I
made an error that required me to take the X-Axis off and that is when
I discovered it is better to align them before you fit them in the Y-
Axis. I re-used this concept for the Y-Axis. The X and Y are very
smooth after doing this. I could barely move the X before I had taken
it apart for a different mistake.
3. All my motor controller needed to be adjusted. I needed to adjust
the REF and the PFD settings.I almost skipped this step but I am glad
I did it now. Some of the stepper controllers were hard to adjust
while mounted on the board because several wires are too short.
4. The build platform temperature sensor was very tricky for me. I had
hooked it up wrong and even looked at the instructions several time.
There is a spot that just seems like it should go there. It turns out
it goes on the last 3 pin connector instead of the 4 pin connector. I
luckily realized this before I turned it on. This was another one of
those good thing I did something wrong in an earlier step because it
helped me find this problem before I blew something up.
5. The power supply I got had to molex connector tails. One tail had
three connectors and the other had two. The instruction seems fairly
clear that you want to use the two connector on the Extruder
controller and the three molex connector on the 3 driver controllers.
Because of the length of the cables I could not figure out how to do
that in the configuration they say you should use. I moved my X-Axis
controller to the opposite side (in the spot labeled B-Axis). This
allowed my to connect the two connector cable to the Z-Axis and the
Extruder controller and the 3 molex tail to the other three driver
boards.
For some reason my Y-Axis belt is higher than what the instructions
indicate it should be. This was not too much trouble. I just moved the
shiv higher up on the motor arbor. I did this with the Y-Axis
installed and just eyeballed it to where the belt no longer rubbed the
Y-Axis trolley.
These are the things that stood out to me. I hope it helps you.
-- Yepher
On Jun 3, 10:50 am, Douglas Cogan <
dco...@pti.com> wrote:
> Yepher,
>
> Well, you've lapped me. Congratulations! I am just now getting my last parts together. I also had my share of setbacks, plus very limited hours to work on it. BTW what was the symptom on the extruder board? I have found the tech support to be very responsive. They sent me some extra bolts I lost (try to get McMaster Carr to do that.)
>
> I coated my hbp with the blue tape as they suggested, but I guess that isn't as good a plan as I thought based on your feedback. . I hope I didn't steer you wrong in letting you know that I went with the HBP instead of the Automated Build Platform.
>
> I'm glad to hear that you have it running and there is light at the end of this tunnel. Any tips on calibration?
>
> -Doug
>
>
>
>
>
>
>
> -----Original Message-----
> From:
chicago...@googlegroups.com [mailto:
chicago...@googlegroups.com]On Behalf Of andres
> Sent: Friday, June 03, 2011 10:15 AM
> To:
chicago...@googlegroups.com
> Subject: Re: [chicago-reprap] Re: ToM Build
>
> If you are printing with heated bed on, you can just wait for the bed to cool, that normally allows it to separate easily since the print shrinks. otherwise, there isn't a good way. if you have nothing between your heated bed and the print besides the aluminum heat spreader i don't think a scraper would be a good move.
>
> good work though! welcome to the world of 3d printing! (oh, and most everyone gets that two steps forward one back thing. i've had more steps back than i would like to admit. but at least i'm at where i am now.)
>
> Andres
> Thanks for the earlier advise. On my ToM I ended up going with the ABP
> and 3MM plastic. The assembly went fairly smooth except I had a bad
> Extruder Controller that I had to RMA. I definitely got caught by a
> few gotchas as well and had to take two steps back for each step
> forward a few time.
>
> At this point things are working fairly well. I have printed 2
> calibration cubes and one travel tic-tac-toe board.
http://www.thingiverse.com/derivative:9958
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