What kind of pencil should i use?

[DaddyMac]

I want a temporary solution until i go out and buy some loctite. Any special type of pencil that works best? (2b, etc.)
Thanks for any help!

 

[PlunX]

Try a 2B mechanical pencil. Rub down the led until you get an edge, then use the edge.

 

[Maniac9127]

I used a 2HB and it worked well, it kept wearing off though, so 2B would probly be best. And of corse, .5mm thickness.