more on strawing

jeffs · 12-05-2008, 11:25 PM

Dear Experts

After the parts to be strawed are down to bare metal, should they be polished using oil and bronze wool, or just bronze wool?

policeluger · 12-06-2008, 12:32 AM

Delete the use of bronze wool all together.......polish by buffing wheel or coucous cloth.

SIGP2101 · 12-09-2008, 03:34 PM

Selenic acid H2SeO4 ----------- 10 parts
Copper (II) sulfate CuSO4 ---- 10 parts
Distilled water ------------------- 1000 parts

After a good pickling of the metal part put the part in the solution described above.
Part will start changing the color from the yellow to the dark blue depending on how long you keep the part in the solution. Just take the part at the desired color and wash it in the distilled water. Worm up and apply olive oil.

There you go, I just revealed more than 300 years old recipe on the net. One of the trade secrets.

The Virginian · 12-09-2008, 05:30 PM

The best results I have gotten have involved heating the polished part to be strawed.

PatrickB · 02-28-2014, 09:20 PM

Quote:

Originally Posted by SIGP2101

Selenic acid H2SeO4 ----------- 10 parts
Copper (II) sulfate CuSO4 ---- 10 parts
Distilled water ------------------- 1000 parts

After a good pickling of the metal part put the part in the solution described above.
Part will start changing the color from the yellow to the dark blue depending on how long you keep the part in the solution. Just take the part at the desired color and wash it in the distilled water. Worm up and apply olive oil.

There you go, I just revealed more than 300 years old recipe on the net. One of the trade secrets.

Where do you get selenic acid? By pickling do you mean cleaning the parts in phosphoric acid?

Olle · 03-01-2014, 07:40 AM

Quote:

Originally Posted by SIGP2101

Selenic acid H2SeO4 ----------- 10 parts
Copper (II) sulfate CuSO4 ---- 10 parts
Distilled water ------------------- 1000 parts

After a good pickling of the metal part put the part in the solution described above.
Part will start changing the color from the yellow to the dark blue depending on how long you keep the part in the solution. Just take the part at the desired color and wash it in the distilled water. Worm up and apply olive oil.

There you go, I just revealed more than 300 years old recipe on the net. One of the trade secrets.

It's still used: Add some nitric acid, and you'll have the recipe for modern cold blue.

12-05-2008, 11:25 PM	#1
jeffs User Join Date: Sep 2008 Posts: 170 Thanks: 0 Thanked 0 Times in 0 Posts	more on strawing Dear Experts After the parts to be strawed are down to bare metal, should they be polished using oil and bronze wool, or just bronze wool?

12-09-2008, 03:34 PM	#3
SIGP2101 User Join Date: Sep 2006 Location: Canada Posts: 256 Thanks: 74 Thanked 67 Times in 32 Posts	Chemical strawing Selenic acid H2SeO4 ----------- 10 parts Copper (II) sulfate CuSO4 ---- 10 parts Distilled water ------------------- 1000 parts After a good pickling of the metal part put the part in the solution described above. Part will start changing the color from the yellow to the dark blue depending on how long you keep the part in the solution. Just take the part at the desired color and wash it in the distilled water. Worm up and apply olive oil. There you go, I just revealed more than 300 years old recipe on the net. One of the trade secrets.

12-09-2008, 05:30 PM	#4
The Virginian User Join Date: Feb 2005 Location: Potomac Falls, Virginia USA Posts: 107 Thanks: 0 Thanked 2 Times in 2 Posts	The best results I have gotten have involved heating the polished part to be strawed. __________________ All my C&R guns are shooters

12-06-2008, 12:32 AM	#2
policeluger RIP Join Date: Jun 2002 Location: Ca. Posts: 2,141 Thanks: 8 Thanked 89 Times in 54 Posts	Delete the use of bronze wool all together.......polish by buffing wheel or coucous cloth.