To avoid clogged noozles, bad 3D printing, holes, boubble, excessive stringing and oozing, your filament temperature must be well calibrated. Let see how to do this.
Full Guide and STL here : https://goo.gl/6dTc8q
A dried good filament, otherwise bubble will fake your tests (if not dried please look for a tip in this list)
A well calibrated speed setting on your printer (let say suitable for almost all your print objects in order to obtain best quality)
An avarage calibrated extrusion rate multiplier (not need to be precise, but almost good)
Now configure your Slicer to print every 5mm with a specific temperature, with steps by 2°-3° C. Usually is best to start higher to lower. Adjust temperature within range suggested for your filament (or your 3D print theoric working range if you know). 15° – 20° C range are enough for the whole 40mm cylinders.
“Street Party” Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
Easy Temperature Test for 3D Printing : Gradual Cylinders