I am looking at this 3d printer but I am worried about the safety. I know that some printers like the anet a8 have been know to spark or set fire in the power supply which could start a house fire. Does this printer have the same danger? If so, would replacing the power supply with a better one like a meanwell power supply make it safer? https://reprap.org/forum/read.php?406,757500,757500#msg-757500 Wed, 16 Sep 2026 01:45:00 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?406,757500,759973#msg-759973 https://reprap.org/forum/read.php?406,757500,759973#msg-759973 VonRansak Prusa i3 and variants Sat, 01 Apr 2017 20:23:02 -0400 https://reprap.org/forum/read.php?406,757500,759949#msg-759949 https://reprap.org/forum/read.php?406,757500,759949#msg-759949 Mach Prusa i3 and variants Sat, 01 Apr 2017 14:52:23 -0400 https://reprap.org/forum/read.php?406,757500,759811#msg-759811 https://reprap.org/forum/read.php?406,757500,759811#msg-759811
The real weak point, as in all these setups, is the Ramps board. The green, knock off Molex connectors are cheap. But a real Molex connector would cost more than your Chinese Ramps board...So...Price/Quality consideration.

Don't leave unattended till you are comfortable with your setup. You could always place in a 'fireproof' box on table not prone to fire if leaving unattended. Basic electrical fire safety should be observed.

Alternative Ramps board [diy3dprinting.blogspot.com] , but may be more feasible (economical) to use inline fuse holder and solder yourself as replacement to the polyfuses. [www.amazon.com] If that last part doesn't make sense, it will eventually ;)]]> VonRansak Prusa i3 and variants Sat, 01 Apr 2017 00:16:44 -0400 https://reprap.org/forum/read.php?406,757500,757963#msg-757963 https://reprap.org/forum/read.php?406,757500,757963#msg-757963
It is absolutely essential when dealing with this size current that the appropriate type and size of crimp-on connectors are used in order to minimise the internal resistance of the connections and prevent the wire ends from distorting. In the vast majority of the cases that I have come across, the problem has originated because bare twisted wire ends have been used to make the connections, which is a definite no no.

The other proviso is that just as tumble driers and dishwashers have a dry heating cycle and should not be left completely unattended, neither should a 3D printer. Some people will start a 15 hour print and then happily disappear off to work for the day and leave it.]]> Supermec Prusa i3 and variants Thu, 23 Mar 2017 05:09:44 -0400 https://reprap.org/forum/read.php?406,757500,757500#msg-757500 https://reprap.org/forum/read.php?406,757500,757500#msg-757500 hunterrogge Prusa i3 and variants Tue, 21 Mar 2017 19:25:28 -0400