This week we have an issue with Nylon6,6 GF30 injection a Brown spot appeared in the extremity of the part. First, we clean up the mold vents thinking that's a problem in gas evacuation but it didn't work secondly we verify the clamping force but it didn't work also.
yes, I fix it. as you said I worked on the injection speed in the level of filling this area of the part and the results were Good.
Thank you very much for your support.