Rat Rig Community [Unofficial]•4mo ago

Printer Speed Settings for VCore 3.1 400

In an effort to dial in my print quality, I ended up down a rabbit hole and now believe I may have some of my wires crossed when it comes to various settings. I'm running an enclosed VC 3.1 400 with a BTT Octopus V1.1 w/ F446 chip and TMC2209 V1.3 Drivers. This is what my printer.cfg currently looks like for my stepper/driver/speed includes and what I have set for speeds in the overrides. I think I may have messed up and pulled these values from the performance ratos guide which appears to be for 50v 5160's. I've seen a number of different settings for the printer overrides (z_velocity and z_accel specifically) ranging from 15 and 20 all the way to 80 and 1700. Are those upper limits/performance configs restricted to the 50v drivers or can I run them on my current setup? I don't need insane speed, but would like to have things like the bed_mesh and z_tilt be relatively quick and reliable.

Solution:

yes and no. In reality this varies from printer setup to printer setup, so if in doubt, test and find out. For 24V the performance defaults are: ```json { "performance": { "accel": 10000,...

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4 Replies

blacksmithforlife•4mo ago

Please upload your entire printer.cfg

over_engineered•4mo ago

@blacksmithforlife 🇺🇸 Here it is. Fair warning, it is an absolute mess right now while I move various settings around and test different things. It will be cleaned up in the final version 🤣

printer.cfg

Solution

miklschmidt•4mo ago

yes and no. In reality this varies from printer setup to printer setup, so if in doubt, test and find out. For 24V the performance defaults are:

{
    "performance": {
        "accel": 10000,
        "velocity": 800,
        "z_accel": 600,
        "z_velocity": 50,
        "travel_velocity": 600,
        "travel_accel": 8000
    }
}

{
    "performance": {
        "accel": 10000,
        "velocity": 800,
        "z_accel": 600,
        "z_velocity": 50,
        "travel_velocity": 600,
        "travel_accel": 8000
    }
}

over_engineered•4mo ago

@miklschmidt Thanks so much!

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Printer Speed Settings for VCore 3.1 400