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3/21/2012 9:55:30 AM EDT
I finished my lower last night, but I put a knick in it by the bolt catch. What's the best way to repair a blemish on a lower? I have some cold blue, but didn't read if it work on Al. I heard sharpie, but that sounds kinda cheesy to me. Any advice on what works good for you would be great
3/21/2012 10:00:17 AM EDT
[#1]
Quoted:
I finished my lower last night, but I put a knick in it by the bolt catch. What's the best way to repair a blemish on a lower? I have some cold blue, but didn't read if it work on Al. I heard sharpie, but that sounds kinda cheesy to me. Any advice on what works good for you would be great


Aluminum black.

Or just leave it. The rifle will still function.
3/21/2012 10:03:32 AM EDT
[#2]
Birchwood Casey makes an aluminum touch-up pen similar to their bluing touch-up pens. As far as I know, their aluminum pens are just black paint.
3/21/2012 10:10:34 AM EDT
[#3]
Quoted:
Aluminum black. (by Birchwood Casey)

Comes in a small plastic bottle.
Clear liquid that stains the Alu. Dip a toothpick in it to fix small fuk ups.
Holds much better than the pen which is a paint.

3/21/2012 10:11:36 AM EDT
[#4]
Aluminum black.

I would leave it, if you touch up every mark you will never shoot your rifle.

Aluminum scratches very easily. I have marks on my lower that i have no idea were they even came from
3/21/2012 10:13:40 AM EDT
[#5]
As mentioned before, an Aluminum Black pen has worked best for me.  I have also used a black Sharpie for very smalll nicks.
3/21/2012 10:14:14 AM EDT
[#6]
Quoted:
Aluminum black.

I would leave it, if you touch up every mark you will never shoot your rifle.

Aluminum scratches very easily. I have marks on my lower that i have no idea were they even came from


This.
3/21/2012 10:14:15 AM EDT
[#7]
Is it glossy or more flat? I have found that using Testor's model paint in Flat Black works too.
3/21/2012 10:15:42 AM EDT
[#8]
Thank for the replies. I know it's gonna get scratched up eventually, but I guess I just wanted at least one day of it looking brand new. Every time I go to gawk at my baby, I end up just staring at my blemish.
3/21/2012 10:16:46 AM EDT
[#9]
It's a spikes lower. So it's more flat
3/21/2012 10:18:17 AM EDT
[#10]
In before the commandos tell you to throw it down the driveway, since guns are tools like hammers and they shoot straighter once they've been beat all to hell and run over by halftracks.

Birchwood Casey touchup pen.

.
.
3/21/2012 10:18:53 AM EDT
[#11]
Quoted:
It's a spikes lower. So it's more flat

Just get the Aluminum Black.

Go shoot.
Install new scratches.
Forget all about the fuk up scratch.



3/21/2012 10:19:15 AM EDT
[#12]
Quoted:
It's a spikes lower. So it's more flat


I meant the Aluminum Black.
3/21/2012 10:21:57 AM EDT
[#13]
Quoted:
Thank for the replies. I know it's gonna get scratched up eventually, but I guess I just wanted at least one day of it looking brand new. Every time I go to gawk at my baby, I end up just staring at my blemish.


Move on.

No sense in staring at the scratch. Stare long enough and others will pop up.

You could always go use it as well?
3/21/2012 10:22:35 AM EDT
[#14]
Quoted:
Quoted:
It's a spikes lower. So it's more flat


I meant the Aluminum Black.

It's a stain, so it's more flat.
To match gloss you have to use a paint.

Paint suks because it comes off when you're cleaning.
I've used the "pen" and it's a waste of time, IMO.
3/21/2012 10:26:17 AM EDT
[#15]
time to camo it!
3/21/2012 10:32:57 AM EDT
[#16]
Quoted:
Thank for the replies. I know it's gonna get scratched up eventually, but I guess I just wanted at least one day of it looking brand new. Every time I go to gawk at my baby, I end up just staring at my blemish.


Nothing wrong with taking pride in your stuff.  You wouldn't leave a scratch or dent on your new car would you?  Fix it and be happy with it.  

3/21/2012 10:38:57 AM EDT
[#17]
Quoted:
Quoted:
Thank for the replies. I know it's gonna get scratched up eventually, but I guess I just wanted at least one day of it looking brand new. Every time I go to gawk at my baby, I end up just staring at my blemish.


Nothing wrong with taking pride in your stuff.  You wouldn't leave a scratch or dent on your new car would you?  Fix it and be happy with it.  


That's right.
The OP wants what he wants.

Everyone has different standards.
Every one of these threads seems to go sideways.

Help the OP or go home.
3/21/2012 10:50:05 AM EDT
[#18]
Time to bust out the Krylon and camo it out!

I have starches all over my first rifle I like them there.  You want to cringe you should have seen my M4 I carried it looked like I took a belt sander to it
3/21/2012 11:03:22 AM EDT
[#19]
Nothing wrong with taking pride in your stuff.  You wouldn't leave a scratch or dent on your new car would you?  Fix it and be happy with it.  



Nothing wrong with taking pride in your stuff at all!

I take pride in the fact that the first scratch is soon well camoflaged by the subsequent myriad of scratches.

Or rather, I take pride in the fact that the scratches come by honest, hard use.  

The solution to the OP's problem is a summer of Waffenlauf and a cold season of Waffenskilaufen with weekly range time thrown in for good measure.  

One thing that is impossible to keep up with is scratches from honest, hard use.  

{{PS:  When I was young that stuff used to bother me a lot...then as time wore on, so did my guns and then finally I didn't see the scratches at all.  Or is that because my eyes ain't 20/20 anymore?    }}}
3/21/2012 1:38:07 PM EDT
[#20]
Quoted:
Quoted:
Thank for the replies. I know it's gonna get scratched up eventually, but I guess I just wanted at least one day of it looking brand new. Every time I go to gawk at my baby, I end up just staring at my blemish.


Nothing wrong with taking pride in your stuff.  You wouldn't leave a scratch or dent on your new car would you?  Fix it and be happy with it.  


I would. My truck doesn't have a single panel that's not scratched, dented or dinged. It gets me from A to B. not worried about appearance, only functionality.
3/21/2012 2:13:20 PM EDT
[#21]
My Colt Amorers Manual says to use spray paint
3/21/2012 3:13:47 PM EDT
[#22]
Birchwood Casey paint pen.  Works wonders.

http://www.amazon.com/Birchwood-Super-Black-Gun-Touch/dp/B0049Q5JX4
3/21/2012 4:39:41 PM EDT
[#23]
Quoted:
My Colt Amorers Manual says to use spray paint


Indeed.

Because they know that a topcoat is only as good as its base, and aluminum is SOFT.

Sharpie works as well as anything.  Acetone first, then Sharpie.

Or, just let it acrue a patina
3/21/2012 5:41:01 PM EDT
[#24]
Quoted:
Thank for the replies. I know it's gonna get scratched up eventually, but I guess I just wanted at least one day of it looking brand new. Every time I go to gawk at my baby, I end up just staring at my blemish.


Blemish or beauty mark, all in the eye of the beholder...and I be holdin' a scratched up rifle!

3/21/2012 6:57:11 PM EDT
[#25]
I think it's a matter of glass full or glass half empty.

I always thought that my rifles were too pretty so, I stopped babying them or worrying about scratched.  Funny after I made that mental switch, I can't seem to beat up my rifles enough: they still look brand new in photos!

On the other hand, when I was trying to keep my weapons pretty, I'd freak out of a nick or two.

I would not bother trying to "fix" any nicks on your lower receiver.  As long as it is properly MIL-SPEC anodized, the thin layer of aluminum oxide is a 9/10 on the Moh scale of hardness of minerals, with Diamonds being 10/10.  When people think Aluminum, they think beer cans... but there are Colt M-16A1 lowers still in service!
3/21/2012 8:10:46 PM EDT
[#26]
Quoted:
I finished my lower last night, but I put a knick in it by the bolt catch. What's the best way to repair a blemish on a lower? I have some cold blue, but didn't read if it work on Al. I heard sharpie, but that sounds kinda cheesy to me. Any advice on what works good for you would be great


Sorry, a bit off topic. I nicked mine first one as well. I have since used the press method with pliers as described here.  Thanks Falarak! For me, it was easier, quicker and didn't nick my lower.
3/21/2012 8:21:39 PM EDT
[#27]
Quoted:
Quoted:
I finished my lower last night, but I put a knick in it by the bolt catch. What's the best way to repair a blemish on a lower? I have some cold blue, but didn't read if it work on Al. I heard sharpie, but that sounds kinda cheesy to me. Any advice on what works good for you would be great


Sorry, a bit off topic. I nicked mine first one as well. I have since used the press method with pliers as described here.  Thanks Falarak! For me, it was easier, quicker and didn't nick my lower.


Without going too much into my stupidity, I installed the bolt catch detent backwards and it would not function. I had to drive out the spring pin with a roll punch. A few good whacks and the punch went all the way thru, marring the raised 1/2" long surface by the magazine well. But I did use the taped plier method to install the spring pin both times.
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