Although the Parkside wall-mounted self-winding reel initially worked well, after a while, the internal spring gradually loses enough elasticity and cannot completely retract the water hose. This tool is specifically designed to help you tighten the spring more easily.

In addition, sometimes there will be a "stuttering and skipping" situation inside the water pipe, and the entire device must be disassembled to repair it. After assembly, if you want to tighten the spring, it will be extremely difficult to do so without special tools.

How to use it:
First, use a flat-head screwdriver to remove the spring cover

Place the tool above the coil spring component, with the tool handle facing to the right.

Firmly grasp the tool

During the process of winding the tool, it is essential to ensure that the tool does not slip, and at the same time, to continuously apply moderate pressure to the center of the coil spring... Ideally, this work should be completed by two people, as it takes at least three hands to precisely control the spring to be securely tightened; however, even if it is done by one person, it is not completely unfeasible. If the tool accidentally slips off the spring seat, do not try to catch the spring with your hand. Instead, let the spring fully rebound and release, and then

Printing suggestions:
I used PETG material, combined with a 0.4mm nozzle and a 0.25mm layer thickness, setting 4 layers for the walls, 5 layers for the top surface, and 5 layers for the bottom surface, with a 10% infill density. The printing results were excellent. If you choose a larger nozzle diameter and set a higher layer height, you can also achieve good printing results.

Assembly Guide:
It is recommended to print a coil spring tool and a coil spring handle
First, insert an M8×70 hexagonal head screw through the coil spring tool, then install a 60mm-long handle, and finally use an M8 lock nut to firmly fasten the handle to the screw. The entire process is completed.