Stepper Wheel - FireLine pulley 25% and 75% more torque than GT2 Belts

thingiverse

I have a huge need for speed and have been looking to find a compromise between speed and cost, if I'm being honest. The next step up from GT2 belts would traditionally be industrial-grade ball-screw or pinion drive, which both come with significant caveats. Inspired by the Dualwire-Gantry (DW-G) approach and the use of FireLine, an extremely strong fishing line with almost no stretch, is a game-changer. The creators of FireLine claim there's virtually no stretch, however that's not entirely true, but there is very little stretch compared to belts. I've designed two pulleys: 10mm and 7.2mm, the 7.2mm gives you 75% more potential torque compared to a standard 12.6mm GT2 gear and 25% more torque from the 10mm pulley compared to the GT2 gear. I recommend using the 10mm pulley for the X-axis and the 7.2mm for the Y-axis on a Creality CR-10, as wire from the X-axis requires extra height from the pulley to avoid rubbing against the V-Slot on the side of the motor. I strongly suggest winding the wire around the pulleys 3-4 times with a lot of tension to prevent slippage. Keep in mind that after installing this modification, you'll need to ensure there's sufficient tension. If you have a tensioner modification already installed, I recommend printing a test cube and tightening while it prints until you're satisfied. I keep my wires as tight as violin strings. * 100 steps per mm for the 10mm version. * 142 steps per mm for the 7.2mm version. You'll want to print these in a material more heat-resistant than PLA, at least ABS, after rigorous torture testing. Dimensional accuracy will degrade over time due to heat traveling through the motor axle to the pulleys. Idler sleeve for CR-10 added as the two-part idler will wear on the string over time. On my Creality CR-10S, while still maintaining good print quality, I'm running the following configuration: * Max Feedrate X and Y 266 * Max Acceleration X and Y 12000 * Acceleration Print and Travel 1000 * Jerk X and Y 30 I can easily print decent-quality parts at 120mm/s infill, 60mm/s outer wall, and 90mm/s inner wall. And it's fast, extremely fast! I wanted to find a speed where I got peak performance, and the above Benchy is printed at: * 150% scale * Two wall shells * 0.8mm top/bottom * 0.4 nozzle * 0.1 layer height * 45mm/s inner/outer walls and top/bottom * 100mm/s infill and travel * 15% infill (zig-zag) * Ironing (concentric) As always, the configuration of your printer is individual, so you'll need to experiment to find the settings that work best with your particular printer. I use 0.32mm FireLine