Nozzle Temperature Decreases While Printing? :(

[firatdede 0]

Hi friends,

When Ultimaker is printing it first sets the true 210 Celcius to temprature. But while printing temprature decreases and at below 200 degre.. 3d print starts to underextrusion because of higher viscosity.

Why it happens? It should stay at 210 degree or which degree that I set.. :(

 

At image temperature drops to 195 degree.. and everything fails.. :/

 

[Anders Olsson 136]

Does the temperature drop when the cooling fans start?

In that case your heater block may be sitting too low, touching the fan cap

 

[eldrick 65]

Or you may simply have the fan speed set too high.

 

[donmilne 2]

I don't understand either of the last two suggestions. If the fans are causing a temp drop (which they surely must) then shouldn't the heater controller function compensate? At 210 it surely isn't already 100% on?

 

[firatdede 0]

Yes problem is at fan I realised.. But before last update there were no problem. It was compensating itself. I reduced Fan speed %100 to %30. And now makes no problem.

Thanks friends.

 

[eldrick 65]

If the fan speed is set too high the heater can't keep up with the heat loss, particularly at higher print speeds, where it has to heat more plastic.