![Thanks](https://www.renovateforums.com.au/dbtech/thanks/images/thanks.png)
![Likes](https://www.renovateforums.com.au/dbtech/thanks/images/likes.png)
![Needs Pictures](https://www.woodworkforums.com/images/smilies/happy/photo4.gif)
![Picture(s) thanks](https://www.ubeaut.biz/wave.gif)
Results 46 to 47 of 47
-
23rd June 2013, 03:04 PM #46Learning to make big bits of wood smaller......
-
4th April 2018, 10:58 AM #47
Intermediate Member
- Join Date
- Nov 2011
- Location
- Queensland, Australia
- Posts
- 27
I thought that the preferred method was to use phosphoric acid. Methods & results seem similar although I have never used citric acid in this way. The grey film left is iron phosphate which I understand to be itself "rust resistant". The car companies usually use this as part of their body treatment prior to painting. Tannic acid is sometimes used with phosphoric & leaves a brown finish, the tannins are said to increase further rust resistance.
I usually apply lanolin after the final wash & dry, available in a spay bottle, a little goes along way. Of course if you need to use your tools regularly, this is not ideal, maybe a light oil wipe in that curcumstance?