<p>I am searching for 3D printing filaments, that are suitable for outdoor purposes, but printable on unheated beds.</p>

<p>I will mostly use it for sensor node enclosures (should withstand temperature up to 50°C/120°F) and car accessories (70°C/160°F).</p>

<p>If it requires annealing, it should have low shrinkage, since I will be printing parts that will fit into each other.</p>

[{'answer_id': 6435, 'author': '0scar', 'author_id': 5740, 'author_profile': 'https://3dprinting.stackexchange.com/users/5740', 'pm_score': 3, 'selected': True, 'text': '<p>This is not an easy one to solve, the firmware of the printer should be keeping the printer at a certain temperature depending on the temperature setting and the current value. If the firmware is not able to keep the temperature at the requested level, but goes beyond that level, that could be considered "strange". As it measures the temperature (and reports it on your display) it must know that it is over the limit and thus should not power the hotend.</p>\n\n<p>In this process there are a few possible candidates for you to look at:</p>\n\n<ul>\n<li>Check for a faulty <a href="https://en.wikipedia.org/wiki/MOSFET" rel="nofollow noreferrer">MOSFET</a> (sort of an electronic switch) on your controller board (is it leaking current to the hotend?). </li>\n<li>Check and or update the current settings for the <a href="https://en.wikipedia.org/wiki/PID_controller" rel="nofollow noreferrer">PID</a> values (settings for the control loop of the hotend). The PID values control the overshoot of the temperature. E.g. is this is very large overshoot? When incorrectly configured the temperature can get higher, but normally should never increase to infinity, are you sure it keeps rising? The determination of the new values is called <a href="https://reprap.org/wiki/PID_Tuning" rel="nofollow noreferrer">PID tuning</a>. Important commands (that need to be send over a USB connected printer with a 3D printer terminal application like Repetier Host, OctoPrint or Pronterface):\n\n<ul>\n<li>The <a href="https://reprap.org/wiki/G-code#M503:_Print_settings" rel="nofollow noreferrer">M503</a> <a href="https://reprap.org/wiki/G-code" rel="nofollow noreferrer">G-code</a> command shows the current settings (somewhere in the heap of all settings).</li>\n<li>The <a href="https://reprap.org/wiki/G-code#M303:_Run_PID_tuning" rel="nofollow noreferrer">M303</a> <a href="https://reprap.org/wiki/G-code" rel="nofollow noreferrer">G-code</a> command can determine the values.</li>\n</ul></li>\n<li>Reflash the firmware</li>\n<li>Replace the printer controller board</li>\n</ul>\n\n<p>You could replace the thermistor and the heater cartridge (just to be sure, most definitely not the problem, but they are really cheap to replace). The thermistor works as it reports the temperature, and the heater element doesn\'t get powered by itself. </p>\n\n<p>As suggested below <strong>the most likely candidate for your problem is the MOSFET</strong>. These are pretty easy to replace (depending on your board) or replaceable by an external MOSFET module (if you happen to have one lying around).</p>\n'}, {'answer_id': 6445, 'author': 'Midhun Kachappilly', 'author_id': 12385, 'author_profile': 'https://3dprinting.stackexchange.com/users/12385', 'pm_score': -1, 'selected': False, 'text': "<p>A similar condition occurred in my 3D printer. I solved the same. I checked all my connection and I came to know that I connected the thermistor of the extruder in the wrong port. So just check the connection of your thermistor.</p>\n\n<hr>\n\n<p>Actually my 3D printer circuit board frequently failed because of over current. I then added a multimeter in series with my power supply and the load, also a voltmeter across the voltage regulator. I then corrected every motor driver DRV8825 to a reference voltage of 0.6&nbsp;V so that the maximum current supplied to each of the motor will be less than 1&nbsp;A. All these made my circuit checked ok. Then I uploaded the G-code, but I couldn't print because my extruder gets heated about 280 °C and got reset and suddenly shut down the extruder supply. This continues to happen.</p>\n\n<p>Then I reinstalled the Marlin firmware and I also changed the port of my thermistor. Now my 3D printer is ok and prints nicely. I also faced another problem while I gave the print command - it showed that the extruder and bed had started heating but it actually was not heating. So I reinstalled the firmware again and this fixed it. Now my 3D printer works OK. You just try for these steps:</p>\n\n<ol>\n<li>Check the connection.</li>\n<li>Reinstall the firmware.</li>\n<li>Try manually preheat the extruder, and just see whether it heats to infinity.</li>\n</ol>\n\n<p>These are my working experience please try for these, I think it will help you. Just don't leave it you will get the solution. Keep on trying.</p>\n"}]
['https://3dprinting.stackexchange.com/questions/6438', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/10684/']