Hi paoki, welcome to the forum!

If you've got surfaces that just touch each other edge-to-edge then try using the Edit/Join command to glue those together into a solid, rather than the booleans.

The Booleans are more targeted towards cutting the surfaces with one another as part of the process, which can make things more complicated in some situations.

Join on the other hand is only focused on gluing edges together and not on cutting objects with one another.

Do you have an example .3dm file of something that is causing you problems? If so, can you please post it as an attachment here? That will help me to take a look at your specific situation.

- Michael

Thanks alot for the help, Michael. I am going to try Edit/Join. Sadly I am not at home right now and writing from a public place which is why I dont have any files available to attach right now. But if i'll keep running into problems i'll get back to your offer to have a look at the file. :)

Paoki,
You can run MoI from a usb stick!! I never leave home withoutit. :)

Burr

Thx for the tip. Was more about the lack of data tho. But seems to work now. :)