I anodised my bits! It wasn't too painful - or expensive. It is
> important to use the right process though - Chromic not sulphuric. If you
> specify the correct DEFSTAN (which Andy Draper can tell you; I have long
> since forgotten I am afraid) you can be sure the job will be done right.
> Chromic only treats to a depth of about 2 microns whereas sulphuric goes
> much deeper and forms a hard but brittle surface which will reduce the
> fatigue resistance of the part. I was advised to have the parts sealed but
> again I cant remember why, but no doubt the Anodizer could give the
> reason. Whether this is any better than Alodyne I don't know, but I do
> remember that Alodyne didn't cost much less than letting a professional do
> the job for me so I put my faith in anodizing.
> Paul Atkinson
Certificate of Conformity
Total cost =A3258.50 inclusive of VAT.
degreasing.
----------------------
David Hillam
#113 G-SHSH (but still not flying)
dgh@liverpool.ac.uk
|