I am a student of Mechanical Engineering struggling to scale down the model to 1:20 by keeping its wall thickness to 3mm. I am using this model for 3D printing If anyone can help me that would make my project easy. I tried in many ways but it didn't work. I am right now in big problem with the project.
I have attached the link of file with this post.
Task to do:
1) Scale down the model using scale "1:20"
2) Keep the thickness of wall as "3mm".