Problem with the construction of the shredder

[albhp]

Greetings to all. The first thing is to ask for forgiveness for my English since I am Spanish and we are very good at English.I downloaded the files of the pieces of the shredder of the page and I sent them to cut to a company of laser cutting. when assembling the shredder the pieces are out of square, the cutting files are not correct?

[justinc]

That photo is not very helpful in showing your issue.
The corners in the files are all square, so if your pieces are not, there is a problem in the cutting.  If parts are not lining up you may have them oriented wrong or need to do some d-burring.