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Thread: Backyard Phosphating
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12th July 2019, 01:20 AM #1Most Valued Member
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Backyard Phosphating
Below are examples of tooling that have what I think is a grey phosphate finish to their non ground surfaces.
IMG_20190711_163830411.jpg
The arbor on the left is a 2 Morse adaptor for which I made a drawbar coupling from 4140. To replicate ( or come close to replicating ) the original grey, I applied Rust-Off to the coupling, initially by immersion followed by application with some paper towel dampened with the Rust-Off.
IMG_20190711_163846457.jpg IMG_20190301_121821633.jpg
BobL suggested using Rust-Off as a rust converter a couple of years ago because of its 62.5% phosphoric acid content. It is available from Bunnings. The container on the left shows the current label.
IMG_20190531_161418820_HDR.jpg
So far I have only applied the Rust-Off to 4140. The example below is a "drawbar" for P20 collets. Behind it is a bar end of precision ground 4140 for comparison.
IMG_20190711_162914646.jpg
And on a slightly smaller scale, an M4 threaded replacement thumbscrew for my daughter's piercing saw. She broke the screw last night. She lives in Melbourne. We both have the same saw.
Before and after the Rust-Off with an original screw on the left -
IMG_20190711_110646064.jpg IMG_20190711_113551329.jpg IMG_20190711_114310076.jpg
I am yet to try "phosphating" the ever so keen to corrode 1214. Next experiment unless Bob beats me to it.
BT
Attached Images
- IMG_20190711_114310076.jpg (99.5 KB)
- IMG_20190711_113551329.jpg (234.0 KB)
- IMG_20190711_110646064.jpg (151.9 KB)
- IMG_20190711_162914646.jpg (139.1 KB)
- IMG_20190711_163846457.jpg (168.2 KB)
- IMG_20190531_161418820_HDR.jpg (170.5 KB)
- IMG_20190711_163830411.jpg (194.7 KB)
- IMG_20190301_121821633.jpg (216.6 KB)
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