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Is this safe? Running the bed at 120 degrees C? I know the limit is 125 C. Will running it at 120 C burn anything out on the Rambo?

there's a max temp built into the firmware, it wont let you go over a certain temperature. look at your firmware and see what it is, somewhere in the neighborhood of 120.

cambo3d wrote:there's a max temp built into the firmware, it wont let you go over a certain temperature. look at your firmware and see what it is, somewhere in the neighborhood of 120.

It says 125 C. I am just wondering if running it at those max temps will ruin anything on the Rambo. Like the Hot end's max is 260 but if you get close to 245 to 250 it can melt the PEEK. I just want to make sure running it at that 120 C does not give same results as running the hot end at 250 C, where it ruins the PEEK. I don't want to ruin my Rambo.

http://forum.seemecnc.com/viewtopic.php ... =170#p7960

at around 120C you may be pushing the limit of your heat bed fuse (i'm using 24v, 12v current draw will be slightly different)

what would probably happen is that you draw to much current and your fuse blows, and you have to replace it. (that's if you power supply can even get you to 120 and maintain that temperature)

I run at 120v for the first pass from time to time, not often, when I have really stubborn parts that won't stick due to very little bottom surface area. But only for the first pass and then you've got adhesion so I drop down to more reasonable levels. I will run 115c for short jobs the whole way, short being under 10 mins. But I run 100-105 all the time.

I would not run 120 alot or more than first layer only though.

The traces on the onxy and in your rambo would be stressed I believe with that much current/voltage and heat over a long multi hour print.

Flateric wrote:I run at 120v for the first pass from time to time, not often, when I have really stubborn parts that won't stick due to very little bottom surface area. But only for the first pass and then you've got adhesion so I drop down to more reasonable levels. I will run 115c for short jobs the whole way, short being under 10 mins. But I run 100-105 all the time.

I would not run 120 alot or more than first layer only though.

The traces on the onxy and in your rambo would be stressed I believe with that much current/voltage and heat over a long multi hour print.

Thanks, I will try your method, sounds logical.