I'm not sure of the proper name for these which isn't helping. You use them to put a line across nuts or bolts to see if they are coming undone. Most the ones I've seen in photos are Orange but what are they called and where do you buy them.

I've been doing the locost version by using tippex but if the proper stuff isn't much more I'd like that.

Clearly its not a substitute for correct torque and appropriate locking methods!

At work we just use paint marker pens (yellow), they work nicely

I just used nail varnish, handy applicator in bottle and lots of colours.
I think I chose hot lips

The proper pens have a very fine nib though and give a far neater and more accurate line

But if they are silly money I won't bother!

[Edited on 19/4/11 by hobbsy]

I used to use Tipex. Also good for timing marks.

I used this stuff.......

Torque Seal - LEMON colour used on fittings,studs,nuts. | eBay UK

That's the stuff I was thinking of, just didn't know the name. Now found posts on here that are 5 years old asking similar questions!

Typical that its about a fiver here but under 2 dollars in the states (where it comes from I guess)

http://www.skygeek.com/f-900-torque-seal.html

[Edited on 19/4/11 by hobbsy]

Or see here for UK supplier, £5 min order and then the postage killed it for me so I bought a single tube on e-bay.

http://www.lasaero.com/site/products/article?id=D03NIG85X

I mind doing this with model enamel paint when I had a few nut fall off my last bike. Even the big chrome one on the top if the handle bars fell off, almost gave me a heart attack!

Any decent engineers merchant/industrial hardware supplier will have "paint marker pens".

But then maybe England doesn't have any left? Engineering that is.

Cheers

Fred W B

Neat trick i learnt from the engine builders at work...

Use tipex to mark the bolt

Then scribe a line along the centre of the tipex (or pencil one in)

That way you can gauge accurately the roation