The blueprint for the main platform can be found here: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1873954757&tscn=1569718535
The blueprint for the button panel can be found here: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1875788083
Subscribe to both.

Make sure you don't forget the sensors. Especially the red one is really important.

Note that you can build the Programmable block and screens elsewhere, or fully leave them out.
They are not part of this build and instead belong to Juggenaut93's Projector2LCD script.

If the piston doesn't move, check if the head might be stuck as a stationary grid due to being too close to voxel terrain.

Make sure the marking on the head is facing towards the welder pad, like in this image:

I recommend attaching the projector to your ship like this:
That way the projection will already be loaded in the correct orientation.

The loaded blueprint should look something like this:

If you already have the welders attached to your conveyor system you can use them to do the printing for you. Just activate the "Welder Platform" group, then get in your ship and fly it into welding range above the pad.


Make sure not to forget deactivating the Welders again afterwards.

Either detach it, or grind it.
The underside of the button panel should now look like this:

For this you need to fly the ship above the rotor head on top of the piston. The side of the button panel with the sensor on it should face the welding pad.
Make sure you are oriented as correctly as possible. Once you attach the rotor, it will violently yank into position, so if you are rotated too far from the final postion you might get clang explosions.

Your orientation should look something like this:

If you can make a quicksave, do so now. If you oriented yourself correctly nothing bad should happen, but there is no harm in being extra save.

Then attach the rotor. It might take a few tries and a bit of wiggling to attach properly, so I recommend dragging the "attach" function of the rotor into your toolbar.

The safety sensor is sitting on the ground on the opposite end of the welding pad as the button panel. It is used to deactivate the welders when a player gets close so you don't get hurt.

Due to a mistake on my part this sensor loses connection to the button panel if you build it manually. You need to fix that.

First make sure both the sensor and the welders are currently off.
Then enter the sensor menu, and put "Trigger Now" for "Timer WP Welders OnOff" in the first position.

It should look like this:

Make sure the piston is fully retracted. Make sure the "Timer WP Retract End" is not currently running. If it is wait for it to run out, or simply hit "Trigger Now" once.
Then set the piston speed to the correct value for your welding speed world settings.

You can find a list of my recommended speeds on the main page here: https://steamhost.cn/steamcommunity_com/workshop/filedetails/?id=1873954757

You are now done and the system should be fully functional.