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1

This concept already exists, it is e.g. found in some high quality 3D printers. Instead of a winch, a belt system (of several belts) is used. An interesting point from this answer already mentions that a winch isn't a good mechanism to lower/raise the gantry; if the cables are wound over each other the diameter of the wound cables will get larger and thus ...


2

I have thought about this same type of problem before and my solution is to use CoreXZ! Let me explain. With CoreXY the effector (the thing that the hot end is on) moves on the X and Y axes. However, there is no reason why this solution can't be turned 90 degrees to stand vertically. Once paired with a normal Prusa/RepRap Y axis, you end up with CoreXZ (...


2

That's a crane. Cranes are low constrained What you are proposing is a portal crane. Have you ever seen a container portal crane in operation? Containers are strung up at the 4 corners and lifted from long cables. They move on their path because the container is super heavy and they have had years to finetune the acceleration profile. But the container sways ...


1

Unless your gantry is extremely heavy, I don't think this will work. The Z motion system needs to not only lift, but to hold the nozzle rigidly at the desired distance from the bed/previous layer. Otherwise I would expect poor layer bonding and possibly even collisions between the nozzle and already-printed material, from slight variations in height where ...


1

You do not need to replace the heated bed. However, you should replace the damaged fork connector. What happened here is that the connector did not make a proper connection with the terminal block (perhaps due to the screw working itself loose) and heated up. There is no reason to suspect anything else is damaged, but the connector itself is clearly damaged. ...


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