Extrusion Flowrate Calculator

thingiverse

With the Google sheet open, from the File menu there is an option to create a duplicate in your GDrive. This will give you your own editable copy. This is a Google Sheet designed to help choose layer heights and print speeds based on nozzle size and maximum flow rate. Hot end/extruder combos can only flow so much material before they start skipping, etc. I encountered this with my Flashforge Creator Pro when attempting to extrude thick layers @ 90mm/s with a .6mm nozzle. I created this Sheet to assist in determining: 1) For a given nozzle size and layer height, what is the maximum feed rate that can be run while staying within the set flow rate? 2) For a given nozzle size and feed rate, what is the maximum layer height that can be run while staying within the set flow rate? There are three sections in it: 1) Quick flowrate calc - plug in your nozzle size, layer height, and print speed to get the flow rate. 2) Solve for print speed - plug in your target flow rate. The maximum print speed will be calculated based on desired nozzle sizes and layer heights. Change these as you see fit. 3) Solve for layer height - plug in your target flow rate. The maximum layer height will be calculated based on desired nozzle sizes and feed rates. (Note: the maximum layer height is limited to 1.5x layer width). Scour the internet to find out what the generally accepted flow rate is for your hot end, or experiment. I've set a value around 12 mm^3/s for my Creator Pro with all metal Micro Swiss hotend. https://drive.google.com/open?id=19FvxnxfEBbd4TxkqHSfrOOUX7gwcBX5Uawkq1ag1LgE