CR-6 Dragon hot end and Orbiter extruder mount on the strain gauge

thingiverse

<h1>CR-6 SE and MAX direct drive mount for the Dragon hot end and Orbiter extruder</h1> Both are mounted on a ridged block on the strain gauge allowing the strain gauge to only move up and greatly reduce vibrations, thus achieving high speed printing. The example Benchy was printed in 22 min @250 mm/s print speed for all lines (also outer walls) and 6000 mm/s2 acceleration. The set of STL's contains 3 version of the mount block: 2 for hot melt inserts (4.2 and 4.6 mm outer diameter hot melt inserts) and one to use standard M3 nuts for mounting. I recommend the hotmelt inserts as that gives a more ridged part. The part fan shroud was CFD simulated at Simscale https://www.simscale.com/projects/K2Van/5015_fan/ <h1>Printing:</h1> Print in a temperature resistant filament PETG or higher temperature resistant like Nylon. The fan shroud gets too close to the hot end for PLA. I printed in carbon fiber reinforced PETG ex Real Filament. Carbon fiber PETG allows for even more weight saving by printing only 1 outer layer plus 1 alternate layer with infill. Regular PETG should be printed with at least layers. All parts are oriented in the correct way for printing. <h1>Print settings:</h1> PETG - 0.44 mm line width and 0.2 mm line height - use variable line width 0.04 max variation - 3 top and bottom layers - 3 or 4 outer layers - 15% gyroid infill - print 5 to 10 °C higher temperature than usual to achieve best layer bonding - 30 to 40% fan speed, lower will give better layer bonding - No supports are needed - Use arc welder if possible Carbon fiber PETG: - 2 top and bottom layers - 1 outer layer - 1 alternate layer with infill - 10% gyroid infill - print as close to 260 °C as you hot end can go for maximum layer adhesion. - other setting as regular PETG