!!! ATTENTION !!! HIGH LEVEL OF DIFFICULTY !!! To obtain good to very good results and avoid frustration, please read all warnings and instructions available here carefully. !!! CAUTION !!! - ALL 3D objects created with SketchUpMake. / All Materials usable...This parts printed with: InnoFill and Ultimaker PLA / Layer: 0.1mm / Infill: =>35 Percent / Temp: 215 Degree / Speed: 35>>>70mm/s. - Disadvantages there are basically no. "PLA" is quite sufficient, because it must be used no special heat-resistant material. Unless you use your Ultimaker 2 in tropical regions, then you better take "ABS". - CHALLENGE: Try it on a single object to get two good-looking exterior surfaces. - NOTES: Position the objects diagonally on the construction area. Do not use a skirt or brim, because it requires too much additional space. - WARNING: An improperly mounted UM2 printhead fans frame may collide with the retaining clips of the build platform. Check precisely the correct position of the fan frame, before the start of printing very large objects. - PLEASE print all items with identical settings. - WARNING: Avoid PLA printing with insufficient infill (less than 33%) in combination with temperatures below 205 degrees. Objects with fine static structures can be very unstable due to poor Layer-Adhesion. Incorrect retraction settings, such as for example too long or too fast retractions can cause big problems in an object with small static elements. - PLEASE use a special printing surface, so your objects get almost smooth and mate base areas, also lower platform temperatures are possible. - PLEASE use the glas printing surface, so your objects get almost glossy base areas. - DIRECT PRINTING ON GLASS: High risk of material Warping and complete detachment from the glass surface, especially for very large objects and insufficient build platform temperatures less than 60 degrees. An excessive build platform temperature higher than 70 degrees, can cause object deformations and dimensional inaccuracies mainly in areas near the glass surface. - If anything does not fit immediately properly then please no assembly by brute force. Sometimes suffice minor corrections with a nail file or more specific tools. Also a re-print of perhaps five to ten degrees lower or higher temperature can help.