Part not sticking to the build plateform

[fabreax]

Hi,

My latest print failed only after few layers :

The base is not sticking to the build plate (I always clean the build plate with IPA and let it dry).

I have only printed small parts on the Form 2 yet. Could you help me to avoid this ?

Thanks

[Randy_Cohen]

Use fine tuning to adjust the Z height down 0.1mm and try again.

[fabreax]

Thanks !

I have IPA marks on my optical window, could it be the problem ?

[Joe90]

could well be, to me the critical time for the laser is at the start to ensure correct exposure, this ensures resin sticks to build plate

[Randy_Cohen]

If the window is dirty, it can affect the print. You should clean it using the FormLabs approved process and materials.

[fabreax]

Thanks for your help. The issue was due to the dirty glass window. After replacing the window, everything is ok !