Oxpho-blue -- and just follow the Brownell directions

Roger

"JensenC" farview at frontier dot net wrote in message
...
I'm about to make some welded square tube picture frames and have been
looking into various blueing products. 44/40 runs about $8.50 for 2 oz.
Oxpho-blue runs about $9.50 for 4 oz. Van's Instant is about $10 for 4
oz.
Hoppes runs about 9$ for 4 oz.

I'm wondering what folks here have found to work best on mild steel. Any
hints or tricks?