@Veti i'll get some new thermistor in a few days when i order a few more parts that i need. the heater is already new and 24 V.
I'll put a second linearguidance to the diamondcarriage.
I figured out that during the fast print, it moves to much (0.5mm). the printed corners are not straight.
Yesterday I scripted a wipetower into prusa. My goal was to evitate oosing colors into the actual printed color while toolchanging. That worked also fine but wasted a lot of fillament. Luckily the printed part was perfect.
I worked with the setup that @deckingman mentioned in his blog (toolsetup: 0.9:0.025:0.025:0.025:0.025....) but the inactiv color oosed somtimes into the actual color.
Today i'm going to ad a servo which will whipe the nozzle and catch the filament which is purged. Like this i'm going to avoid this wipetower an ooze out the unused color at a specific height and befor a toolchange. and prepare the actual tool.