When I had my engineering company we had a couple of parts that needed anno and the company we normally used were mega busy so "we" had the bright idea of buying one of these DIY kits
![idiot2 :idiot2:](http://www.radbmx.co.uk/forum/Smileys/smilies/idiot2.gif)
The only problem we found was...get the right shade of (in our case) red
![tickedoff :tickedoff:](http://www.radbmx.co.uk/forum/Smileys/smilies/tickedoff.gif)
There's a reason why the professionals are professionals they know what they are doing
![4_17_5 :4_17_5:](http://www.radbmx.co.uk/forum/Smileys/smilies/4_17_5.gif)
If you've got the time (and money) then they are worth a play with but remember different grades of alloy will need different times/rates with the dyes