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Hello, i'm trying to wire my heatbed to RAMPS 1.4 to D8 port, but i have problem. That heatbed heats all the time, if i turn off heating, heatbed heats, if i turn on heating, heatbed still heats....

Hello, i have this 3D model in my repetierhost
837

But that print looks like this

838

so that hole is so much warped to it's height, anyone knows how to solve problem?

i tried to wire signal and - and it works :) RAMPS it's in 100% condition, thanks for advices :)

Hello, i'm building reprap RAMPS 1.4 3D printer, but i want some explantation about endstops

If connect + to - it turns off printer

There is an third cable - blue - what it is?

It's all...