04-09-2013, 07:45 PM
The hardware store is cleaning up old stock so they gave me this at 75% off. The label says it phosphoric acid, allow file to soak for at least 2 hours.
![[Image: IMG_0555.jpg]](https://lh4.googleusercontent.com/-TS-Dkceeu_4/UWS0eHqr_II/AAAAAAAABNs/kIH2d0dRiKo/s912/IMG_0555.jpg)
Gave it a try on this BADLY abused lathe file. It is dull all over to the point a finger nail can't detect the teeth. Here's a before shot.
![[Image: IMG_0553.jpg]](https://lh4.googleusercontent.com/-i4MOuWj3kvw/UWS0ejB9foI/AAAAAAAABNw/gphP5tc3mos/s1280/IMG_0553.jpg)
So after 2 1/2 hours outside on a cool day we got this.
![[Image: IMG_0554.jpg]](https://lh6.googleusercontent.com/-oRlwR5QANd4/UWS0fehozkI/AAAAAAAABN4/ROiUjj0HRtE/s912/IMG_0554.jpg)
Still not like new but it will cut now. Will probably try soaking it a little longer and see what we get. For 5 bucks it was a cheap experiment.
Gave it a try on this BADLY abused lathe file. It is dull all over to the point a finger nail can't detect the teeth. Here's a before shot.
So after 2 1/2 hours outside on a cool day we got this.
Still not like new but it will cut now. Will probably try soaking it a little longer and see what we get. For 5 bucks it was a cheap experiment.
Free advice is worth exactly what you payed for it.
Greg
Greg