About this 3D model

I needed a mount to attach a Dremel 200 to my CNC. Could not find anything perfectly fits, so I made one. Assembly requires 4 x M3x45mm, 2 x M3x35mm, 1 x M3x30mm machine screws,7 M3 washers and 7 M3 nuts. I haven't printed the parts yet, but Solidwork's Assembly shows no errors/issues. PS: You need to print 2 of Part A (Top and bottom pieces).