Thx Tig for your help. As you can probably tell I'm very new to Sketchup. I have all the issues resolved and back to a solid but I'm still in the dark as how to get the holes and it still be solid. Can you point me to a tutorial on how to accomplish this? Thx

I have a cooling duct I'm trying to design for my printer but I can't get it water tight to print. This is the first time I've tried to make anything like this. I'm attaching the file so you can see what I mean. Thx for any pointers you might have. Thx

AM8 Cooling Duct.skp

I have an STL file I want to print but I want to have the background to be solid white. At the present time it has no background color. I've attached a pic of the file to see what I'm talking about. Any help with this would be appreciated. Thx