<p>I have created a design with fusion 360. I tried to print it with my M3D Pro printer but it seems the designs have a flaw. </p>

<p>If I try to print the bottom part, the second layer is wrong. It seems to have moved to the left by a few centimeters.</p>

<p>Here is the link to the <code>.stl</code> files and pictures of how the first few layers turned out.</p>

<p><a href="https://seafile.fmk.me/d/09e43aa7fc8e416ab187/" rel="nofollow noreferrer">https://seafile.fmk.me/d/09e43aa7fc8e416ab187/</a></p>

<p><a href="https://i.stack.imgur.com/uOtTN.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uOtTN.jpg" alt="broken print"></a>
<a href="https://i.stack.imgur.com/IrAGq.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/IrAGq.jpg" alt="broken print 2"></a>
<a href="https://i.stack.imgur.com/KYEfD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KYEfD.png" alt="bottom.stl"></a>
<a href="https://i.stack.imgur.com/vtCyf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vtCyf.png" alt="top.stl"></a></p>

<p>The <code>bottom.stl</code> file can be loaded and viewed in the m3d software but leads to faulty print after the first layer. The <code>top.stl</code> cannot even be viewed in the M3D software.</p>

<p>Other 3D files from thingiverse etc. can be printed without a problem.
Do I need to enable any special features to be able to print those files correctly?</p>

<p>Yours, Felix</p>

[{'answer_id': 5412, 'author': 'Tom van der Zanden', 'author_id': 26, 'author_profile': 'https://3dprinting.stackexchange.com/users/26', 'pm_score': 2, 'selected': False, 'text': "<blockquote>\n  <p>and found out it has a resistance of 1.5kΩ, while it should have a resistance of 4.7kΩ, so I suspect this is the main reason behind this high reading. Now the only thing left to figure out is how the resistance of this resistor changed.</p>\n</blockquote>\n\n<p>You can't measure the resistance of a resistor in circuit - the resistance probably appears to be lower to your multimeter because of some other circuit elements. There's also no reasonable explanation for how a 4.7k resistor could suddenly turn into a 1.5k one. It's highly unlikely this resistor is the cause of your issues.</p>\n\n<p>It is more likely something else is damaged, likely the AtMega1284p microcontroller itself. When your extruder touched the bed clip, perhaps the 12V from the bed shorted through the clip and to the extruder? I would guess that the 12V shorted itself to the thermistor input, which subsequently blew the ESD protection diode on that input. This might explain the high reading and the low apparent resistance of R41.</p>\n"}, {'answer_id': 7460, 'author': 'vittorio88', 'author_id': 13462, 'author_profile': 'https://3dprinting.stackexchange.com/users/13462', 'pm_score': 2, 'selected': False, 'text': '<p>I had the same issue. Hot-end temperature reading stuck at 209 degrees even with hot-end thermistor disconnected  or swapped with bed thermistor on the Anet A8 mainboard.</p>\n\n<p>After ordering and swapping the AtMega1284p (using jtagice3 and hot-air soldering station) and the 4.7 Kohm resistor (which measured 2.06Kohm on the board and 4.7kohm off the board) to no avail, the only component left in the circuit that could cause the failure was the capacitor.</p>\n\n<p><strong>Swapping the capacitor C47 fixed the stuck reading for me</strong>. I used a 10uF instead of a 15uF capacitor as indicated in the schematic. I do not believe it makes much of a difference, and they are much more common. Make sure the capacitor can withstand at least 10V, but I got a 30V one, because the price was similar.</p>\n\n<p>To any body that runs into this issue, before spending time and money swapping components like I did, <strong>measure the voltage of the node between R41 and C47 with respect to ground</strong>. This is labeled T56 or test point 56. Compare this voltage to T54, T60, T58, and T62 where similar circuits are placed. You should get a voltage of around 5V ( the pull-up voltage) in the functioning circuits, since we are talking about DC voltage, the capacitor should charge up nearly instantly when the the board is powered, and behave as an open-circuit.</p>\n\n<p>In my case, C47 was almost in full short-circuit, and I read a low voltage on T56 ( ~0.5v). </p>\n\n<p>Since the capacitor was in a low impedance failure mode, the 5V supply voltage of the voltage divider circuit was not enough to power it, hence the fixed temperature readings of the hot-end thermistor ADC channel regardless of the thermistor being connected or not.</p>\n\n<p>Good luck!</p>\n'}]
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