!!! CAUTION !!! - SORRY, BUT: This is not for people who dip their biscuits in the coffee ... not for the impatient wimps...Please go ahead and look for simple Solutions :-) - For proper material feed please make sure that you always use a clean print head. This strong material feeder does not remove any existing problems caused by the printhead. - ALL 3D objects created with SketchUpMake. / All hard Materials usable...This parts printed with: InnoFill and Ultimaker PLA / Layer: 0.1mm / Infill: =>35 Percent / Temp: 215 Degree / Speed: 35>>>70mm/s. - 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. - BEFORE THE RELEASE, there was an almost 500 hours continuous test phase, besides, many components have been optimized and revised several times. Provided that your machine can produce nearly flawless reproductions, then you get a very reliable and universally applicable instrument. - ULTIMAKER 2 OWNER MUST NOT MAKE CHANGES directly on the machine / software / Firmware: CPv7 was created for the UM2. But, ONE additional 4mm diameter hole in the UM2 backplane brings more mechanical stability for the spring tension lever. - WARNING: The CPv7 couplings are choosen for 6mm Bowden. The original UM and UM2-PTFE-Bowden has a diameter of OD: 6.35mm / ID: 3.17mm. Reduce the initial diameter of an original UM-Bowden (recommended) over a total length of at least 15mm, or use a OD: 6.00 / ID: 4.00mm-Bowden (Not recommended). - 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.