quartz is found in the cave (i recommend bringing some food cuz you may take a lot of time to find quartz or if ur lucky enough it'll be fast), that is near romeo, ball joints are also near romeo, burried in grain pile (it's recommended to bring metal detector), ankle or knee joints can be found inside tr3 (in bookshelf where's the keyboards etc.) and in tr1 (look inside a bucket). Feel free to ask me if smth is confusing to you.

also i got all the parts now. i tried making the head but it doesn't work i got everything on the table even the blueprint thingy and all it does is makes drives. like it only uses the metal and electronics