Anybody use J-B Weld on sights?

rangerider7 · Post by **rangerider7** » Tue Apr 29, 2008 5:13 am

I am looking at a gun that has a front sight put on with J-B Weld. It is dovetailed into the barrel. Will this hold or is it a poor substitute for a front sight attachment?

rjsixgun · Post by **rjsixgun** » Tue Apr 29, 2008 6:29 am

I've used JB Weld on a few dovetailed front sights as a quick fix just to lock them in and keep them from moving in the dovetail. Well that was 2 years ago.......still locked in there. Is it the right thing to do? well not really, I wouldnt pay a gun smith to use JB weld, but does it work in a pinch, yes.
I've also used it to build up a front sight to make it just a pinch taller.

Cliff · Post by **Cliff** » Tue Apr 29, 2008 6:35 am

I have used this stuff to attach both rear and front sights from time to time. It does a very good job if the job is done properly, clean the surfaces and proper mixing of the two components. Never had a sight come off. If you have to remove the sights down the road, heat (350 degrees F. or so will cause it to come loose.) to remove and change. Doens't always look good but it is handy at times.

Leverdude · Post by **Leverdude** » Tue Apr 29, 2008 7:55 am

rangerider7 wrote:I am looking at a gun that has a front sight put on with J-B Weld. It is dovetailed into the barrel. Will this hold or is it a poor substitute for a front sight attachment?

It'll hold but I think theres better ways. Might as well solder it in.
If you buy it, what I'd do is get it warm & remove it. Clean the epoxy off & see what the issue is. If its loose theres a bunch of ways to snug it up. You can raise metal on the sight bottom with a center punch, you can peen the edges of the sight dovetail upwards slightly or you can put some shim stock under it. Thats what I would try first, the shiming.

Texican · Post by **Texican** » Tue Apr 29, 2008 2:02 pm

Leverdude wrote:You can raise metal on the sight bottom with a center punch.

+1

This worked great on my Marlin 1894CB .357 - still there after about 20K rounds over countless SASS matches.

Wrangler John · Post by **Wrangler John** » Thu May 01, 2008 11:00 am

JB Weld also works well for epoxy bedding scope bases to receivers, and as a filler for stock inletting. It has better thin section strength and hardness than most "flexible" bedding epoxies. I also used it to install a replacement sight on a Blackhawk, it worked until the barrel was changed in a custom rebuild. Almost all epoxies are heat sensitive, where they loose adherence if overheated, JB Weld is considered a "high temperature" epoxy, but keeping heat away is still a good idea, as is freezing for the same reason.

Blaine · Post by **Blaine** » Thu May 01, 2008 11:11 am

What would, IYO, be better: JB or the "never let go" loctite? I've never tried the JB, but the Loctite seems forever and is thinner to get in all the nooks and crannies.....

jnyork · Post by **jnyork** » Thu May 01, 2008 11:20 am

I would use the JB. A friend has Marlin semiauto .22 that would NOT keep the scope mount on the grooves no matter what. We tried the red locktite to no avail, still shot loose. JB fixed it, has not come loose after about 5000 rounds.

Leverdude · Post by **Leverdude** » Thu May 01, 2008 4:41 pm

BlaineG wrote:What would, IYO, be better: JB or the "never let go" loctite? I've never tried the JB, but the Loctite seems forever and is thinner to get in all the nooks and crannies.....

The high heat loktite withstands higher temps than epoxy. I dont know which bonds better tho.

Hillbilly · Post by **Hillbilly** » Thu May 01, 2008 10:32 pm

Never used JB Weld on gunsights... My Marlin 357 had a floatin post on a loose dovetail.

I shot a little super glue in that... perfect for 3 years so far

Jeff

otteray · Post by **otteray** » Thu May 01, 2008 11:05 pm

jnyork wrote:I would use the JB. A friend has Marlin semiauto .22 that would NOT keep the scope mount on the grooves no matter what. We tried the red locktite to no avail, still shot loose. JB fixed it, has not come loose after about 5000 rounds.

1. Marlin Model 60 or a Glenfield M 70 - can't remember which one but same solution as your friend!

2. Colt SAA Pre War- front sight has held for many, many rounds with JB Weld (.44 Spec.)

3. Yugoslav SKS. I JB'd a peep sight on the rear sight base and it's still fine after many, many rounds of 7.63x39

4. Needed a taller front sight on the Marlin M60. Once again, JB Weld to the rescue. I shaped a small piece of aluminum sheet metal, then stuck it on top of the short one- piece front sightbase/ sight assembly. No problemo. Works great.

In each case I followed the instructions and additionally let it cure for a few weeks.

preventec47 · Post by **preventec47** » Sun May 04, 2008 2:53 am

I stuck a peep sight dovetail insert onto the receiver of my single
shot shotgun to shoot slugs with using JB weld and it has worked real
well so far. Now I can hit something farther than 10 feet away !

mikez · Post by **mikez** » Mon May 05, 2008 11:02 am

You guys have to be kidding? Right?

jnyork · Post by **jnyork** » Mon May 05, 2008 5:51 pm

mikez wrote:You guys have to be kidding? Right?

Nope.

Anybody use J-B Weld on sights?

Anybody use J-B Weld on sights?

J B Weld for sights?

Re: Anybody use J-B Weld on sights?

Re: Anybody use J-B Weld on sights?

JB weld

Re: JB weld