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SoliForum - 3D Printing Community → Help/Repair/Maintenance → Max Hotend Temperature
How do I know what my max safe temperature for my hot end is? I recently swapped my control board from the stock rev 1.3a sanguinololu to the same rev1.3a sanguinololu but assembled in the uk. The old one was green and the new one is red with different step chips. I remember reading somewhere in the solidoodle tips that your motherboard determined what your max bed and extruder temps could be.
That is actually not true. The bed can be any temp it's material can withstand although you should never have to go above 110 for any material. The hotend however is another animal. If it has a PEEK insert then it can only go up to 235with out damaging that insert. Also beyond 235 you would need to switch to high temp thermistors or thermocouples as the stock ones will not handle the higher temps. I think the reason they say the board dictates it is because not all boards can use thermocouples.
Thermistors exist that can handle 300C, E3D uses them.
The motherboard doesn't limit your temperature, but Solidoodle moved the thermistor location and/or changed the firmware tables, which makes folks think there's a connection between the controller board and the temperature limit when in reality its just that a few things changed at the same time.
There is a maximum temperature setting in the firmware (Marlin) that limits the temperature you can set, and triggers a temperature fault if the measured temperature goes over this.
It's helpful to adjust this if you experience faults due to spurious triggers of the overtemp detection, or you have modified your hot-end and wish to (or need to!) allow for increased temperature settings.
You'd need to learn how to configure the Marlin firmware (configuration.h), and how to flash it to your board (the sang is relatively easy, compared to the printrboard).
Oh ok. I was going by this link:
http://support.solidoodle.com/hc/en-us/ … e-Settings
Since I had a sanguinololu instead of the rev E I was always afraid to print at 210 because the website said my max was 195.
I had also read that for SD2 setting it to 210 was the same as 235 in other printers. Is this true?
Currently I run my extruder at 195 and my bed at 90 for the first layer and 80 for the rest of the print. I wanted to experiment with ninja flex though and they want you to print at 230-250 and 50% speed.
My nozzle does have a peek insulator though so it looks like ninja flex is out of the question without an upgrade.
The NinjaFlex recommended hot end temp is 210-225...for an SD2 this would mean a setting of 185-200, so you should be OK; and slowing down the print speed is necessary unless you upgrade your extruder mount and hot end to provide a more fully supported direct feed under the extruder gear.
The NinjaFlex recommended hot end temp is 210-225...for an SD2 this would mean a setting of 185-200, so you should be OK; and slowing down the print speed is necessary unless you upgrade your extruder mount and hot end to provide a more fully supported direct feed under the extruder gear.
Should I get a telfon tube for this?
That would work, but you might have some difficulties working it into your current setup if you still have the stock acrylic extruder assembly.
You might be better off with something like this...you can see that the area directly under the drive wheel and idler are about as fully supported as can be...this is where the buckling happens with flex filaments.
http://www.thingiverse.com/thing:340445
FYI; I first ran flex filament on my stock extruder with no extra support...just had to slow the print speed down to about 30mm/sec if I recall...
SoliForum - 3D Printing Community → Help/Repair/Maintenance → Max Hotend Temperature
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