Disc Rotors - out of true from the box?

[keithmac]

I have a handled 3mm allen key that half as long as it was originally, ground down multiple times to fresh end..

Torx are a much better fastener design.

 

[confusedcyclist]

Actually, it was a torx bolt!

Take the allen key that rounded the bolt off and throw it away, if it has done it once it will do it again.

Yes, it's gone in the bin, it was the naff freebie ones, similar to what comes with flat pack furniture. Ok for getting on when using a torque wrench for final adjustment, but useless and too small and awkward for removing the discs. I've ordered a hardened tool on ebay for a few quid.

 

[confusedcyclist]

Of course all ball-head allen keys were banned from the workshop or ground down on day 1. They are just tears waiting to happen.

I didn't realise this until recently, having had the use of them on expensive park tool wrenches, I thought they would be safe to use, but I noticed my FD was getting harder to adjust. This was why. I'll be avoiding ball ends from now on!