I deblued the bolt on my SVT40 refurb (pic heavy)

Ioncannon

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I decided to remove the bluing that was added to refurbished SVT40s by the Soviet arsenal and return the bolt/bolt carrier back to it's silvery polish. I know I am probably going to get flack over it by some milsurp fanatics cou:, but imo, it's a refurb and I am not doing a disgrace to it (and it isn't anything structural, IE drilling holes). Also the bluing itself was scratched up from the bolt moving back and forth over time. This one had a plum bluing as oppose to the gold kind.

Added: Since many people are going to try it out themselves (I am not responsible for any damage done), just a few notes:

-I did not remove the firing pin/spring, the damn retaining pin won't come out. I don't think they blued those two parts but I do no know for sure. Cocks and fires no problem though.

-Make sure you use a bore brush or something similar to clean out any rust where the recoil spring goes.

-Make sure you get all the left over, wet rust out. When you bake it to dry the water out, it gets all crusty and then you have to use steel wool to scrape it off, and that's no fun.

Anyway, the process to remove bluing is simple and cheap. All you need is white vinegar.

Here you can see the original bolt color.
PjCrq.jpg


Both bolt and bolt carrier are place in the tub of vinegar (you can see the scratched up finish I talked about).
Vy2BN.jpg


This is where the magic happens. The bluing starts to rust (not effecting the metal under it) and the surface becomes an orange tinge.
0JSkJ.jpg


Here some of the bluing has been wiped off.
9FPFY.jpg


Really orange now
F1HXf.jpg

wJMHl.jpg


Kinda of jumped to the end, but most of the bluing has been wiped off. Still some stubborn parts left.
YH8gl.jpg

9cb6c.jpg


After all the bluing is wiped off, I used super fine steel wool to get any small bits off. Then I rinsed the parts in water to get the vinegar out and baked for 10 min at 200 degrees to get all the water out. This is how they look now.
admBo.jpg


After polishing, they look awesome.
1RvHA.jpg

cpxCL.jpg


Sadly there is one issue I wasn't expecting. The bolt carrier had pitting from it's earlier days and some of the bluing had trouble getting off. It isn't very visible while in the rifle due to the dust cover, but still sucks :(.
EwnyH.jpg


However, the new polished bolt does make the SVT40 look awesome!!!
M8xZO.jpg

egiyt.jpg


So what do you guys think?
 
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I decided to remove the bluing that was added to refurbished SVT40s by the Soviet arsenal and return the bolt/bolt carrier back to it's silvery polish. I know I am probably going to get flack over it by some milsurp fanatics cou:, but imo, it's a refurb and I am not doing a disgrace to it (and it isn't anything structural, IE drilling holes). Also the bluing itself was scratched up from the bolt moving back and forth over time. This one had a plum bluing as oppose to the gold kind.

Anyway, the process to remove bluing is simple and cheap. All you need is white vinegar.

Here you can see the original bolt color.
PjCrq.jpg


Both bolt and bolt carrier are place in the tub of vinegar (you can see the scratched up finish I talked about).
Vy2BN.jpg


This is where the magic happens. The bluing starts to rust (not effect the metal under it) and the surface becomes an orange tinge.
0JSkJ.jpg


Here some of the bluing has been wiped off.
9FPFY.jpg


Really orange now
F1HXf.jpg

wJMHl.jpg


Kinda of jumped to the end, but most of the bluing has been wiped off. Still some stubborn parts left.
YH8gl.jpg

9cb6c.jpg


After all the bluing is wiped off, I used super fine steel wool to get any small bits off. Then I rinsed the parts in water to get the vinegar out and baked for 10 min at 200 degrees to get all the water out. This is how they look now.
admBo.jpg


After polishing, they look awesome.
1RvHA.jpg

cpxCL.jpg


Sadly there is one issue I wasn't expecting. The bolt carrier had pitting from it's earlier days and some of the bluing had trouble getting off. It isn't very visible while in the rifle due to the dust cover, but still sucks :(.
EwnyH.jpg


However, the new polished bolt does make the SVT40 look awesome!!!
M8xZO.jpg

egiyt.jpg


So what do you guys think?
I like:)
Joce
 
Thanks for the compliments! Only two things that I make note of:

First, I did not remove the firing pin/spring, the damn retaining spring won't come out. I don't think they blued those two parts but still can't see what is inside. Cocks and fires np though.

Second, if you try this yourself (I AM NOT RESPONSIBLE FOR ANY DAMAGE DONE), make sure you use a bore brush or something similar to clean out any rust where the recoil spring goes.
 
Thanks for the compliments! Only two things that I make note of:

First, I did not remove the firing pin/spring, the damn retaining spring won't come out. I don't think they blued those two parts but still can't see what is inside. Cocks and fires np though.

Second, if you try this yourself (I AM NOT RESPONSIBLE FOR ANY DAMAGE DONE), make sure you use a bore brush or something similar to clean out any rust where the recoil spring goes.

Yes you are. Give me your address. I refuse to take personal accountability for anything. Everything bad that happens to me is someone else's fault and is in no way an indication of my poor life choices. ;)
 
I think this is a good project for my SVT 40 this weekend. I definately like the "original look" better! Thanks for the de-blueing lesson.
 
Thanks for posting the how to guide!
I may have to try this out with my refurb shooter. I never minded the gold coloured carrier I had before, but the Barney purple of my current shooter is just fugly. Like you noted it gets scratched up over time.
If it makes you feel any better the pitting on your bolt carrier looks the similar to my non refurbed Finn capture SVT-40
 
Thanks for posting the how to guide!
I may have to try this out with my refurb shooter. I never minded the gold coloured carrier I had before, but the Barney purple of my current shooter is just fugly. Like you noted it gets scratched up over time.
If it makes you feel any better the pitting on your bolt carrier looks the similar to my non refurbed Finn capture SVT-40

Well that is good to hear. I heard people fixed cosmetic pitting with jb-weld, anyone know how that would go? I don't think it can be polished....

Another note I remember.... make sure you get all the left over, wet rust out. When you bake it to get the water out, it get's all crusty and then you have to use steel wool to scrape it off, and that's no fun. I think that covers all points. Anyway, glad everyone enjoys this guide, have fun debluing!
 
This technique works with the blued buttplates and bolt take down discs on RC K98's.

As vinegar is an acid, just make to oil the you know what out of the part afterwards.
 
This technique works with the blued buttplates and bolt take down discs on RC K98's.

As vinegar is an acid, just make to oil the you know what out of the part afterwards.

Oiling is a given, all metal parts should be oiled before being placed back into a firearm!

How long did the process take?
5-8min for the reaction to be noticeable, 15min a lot of it should be orange, 20-30 to get all the stuff out.
 
Make sure you don't mention this trick on any American gun forums. I offered the tip on Gunboards.com and got positively flamed by some real arrogant members on the site.:ban: I guess because the SVT40 costs $750 and up over there, it is taboo to alter these priceless collector items. I think they are really pi$$ed that I said that an SVT costs about $300 over here.
 
I prefer the bright bolt look. As mentioned before, that is the original look. I buffed my bolt carrier to remove the plumb but I like the vinegar idea. I would strongly recommend taking out the firing pin because any vinegar left in there will start to rust the internals.
 
Looks good. I did my '41 and '43 last month, it turned out great. I let mine soak for an hour. You should try and get that bolt apart to give it a good cleaning. A hammer, a suitable punch and a piece of wood with a hole big enough for the pin to fall into is all you need. I had to give my '43 bolt a good beating to get the pin out, it came out no problem after a while. Good luck.
 
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