To setup the threadlocker experiment, obtain multiple strengths of thread-locking fluid, generally differentiated by color. You can also compare different manufacturers by including multiple threadlocker brands. The experiment requires a clean bolt as well as a separate bolt for each type of threadlocker. Finally, a bi-directional torque wrench is required to accurately measure the torque strength of each bolt.
Obtain a metal object that features multiple threaded holes. Thread the first bolt into a hole without applying threadlocker. Use a torque wrench to measure the torque applied to the bolt and record this number. Then, apply each type of threadlocker to a different bolt. Install these bolts and use the torque wrench to apply the same amount of torque you applied to the bare bolt. Let the bolts sit over night, then reverse the torque wrench setting and use it to remove each bolt. This allows you to determine the increase in torque capacity given by each type of threadlocker.
Apply each type of threadlocker to a different bolt. Place the bolts in a jar of water and allow them to sit for multiple days. Remove each bolt and wipe away the thread-locking fluid. Examine the exterior of the bolt for signs of rusting. An efficient threadlocker prevents all rusting, as a rusted bolt will become stuck inside of the thread hole where it’s installed. Alternatively, repeat the torque capacity experiment after you remove the bolts from the water, without wiping away the thread-locking fluid. This demonstrates the threadlocker's ability to retain a strong bond under moist conditions.
Apply a single type of threadlocker to multiple bolts. Install the bolts into small objects that you can place into a freezer. Use a torque wrench to control the torque setting applied to each bolt. Leave one bolt at room temperature and place a second bolt in the freezer. Use the torque wrench to determine the difference in torque capacity due to temperature differentiation. Repeat the experiment for each type of threadlocker to compare their effectiveness. Additionally, if you have access to a blowtorch or other heating device, you can perform this experiment to determine the effectiveness of threadlocker under extreme heat.