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What is the preffered method of making it more difficult to remove hex bolt fitted parts?
Keep one hand on your bike at all times.
If you make it so hard to remove the parts that it's easier to take the whole bike, that's what will happen.
gbj_tester-
Agreed but that is not an option. Bike are not allowed in the building.
A security team patrols this car park every few minutes (can't go into more details) and whilst possible, I think it is unlikely that a thief will get through two Abus Granite 54 locks without making noise that will draw attention to the security guards.
For this reason, I want to stick with my current double D-lock arrangements and make it a bit less likely that somebody can make off with my brake and seatpost before the period of n minutes has passed.
Stonehedge
I had my bike stripped for parts in my office underground carpark recently. The carpark is full of really expensive cars owned by royals, sheikhs and footballers (what a combo) so has better than average security. The bottom line is that the bike thief was bold and experienced enough to get in and out with my front brake and seatpost/saddle/clamp quickly enough not to get spotted by the numerous security guards who patrol on a regular schedule.
I'm well aware that the reality is part theft is easy...all you need is an allen key and a small bit of time.
What is the preffered method of making it more difficult to remove hex bolt fitted parts? I don't like the superglue and bb method because standard solvent works really quickly and I assume that is part of a bike thief's tool kit.
What about mastic in the bolts? Doesn't dissolve with standard solvents so you either need a heat source, mastic solvent or a bit of time with a small craft knife.
How about polyfilla? Not as quick to remove as superglue based ideas.
This is my beater...it will be a rare scenario for me to have to adjust or replace anything. All I want to do is make it take a few minutes to undo a bolt rather than a few seconds.