It is known that over time a regular door and other hinges start to creak, and lubricate them from the inside is not so simple: sometimes you have to remove them, which is not always possible.
However, once you drill into the top level loop through hole to the axis, and lubrication is simplified, and the result is excellent: the loop will stop squeaking for a long time.
Recommend to read
THEIR FIRST ROCKET
Where to start! This is the question asked by many novice rocketmodeler. What model to choose and what technology to build it! In our opinion, a good help in this will have material...
TABLE-TRELLIS
In every apartment — large I malogabaritki — usually, there are two tables-one in the room, the other in the kitchen. For families consisting of two to four people, it is a necessary...