You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Guns+welding
- Thread starter xandi
- Start date
TIG = Tungsten Inert Gas.
MIG = Metal Inert Gas also known as Wire Welding.
In case anyone did not know.
At one time it was common for gunsmiths to modify Mauser and other military straight-bolt actions by cutting off the bolts and welding on bent bolt handles.
Also upon occasion, they would cut and weld square butt Smith Wesson revolvers to modify them to a round butt configuration.
MIG = Metal Inert Gas also known as Wire Welding.
In case anyone did not know.
At one time it was common for gunsmiths to modify Mauser and other military straight-bolt actions by cutting off the bolts and welding on bent bolt handles.
Also upon occasion, they would cut and weld square butt Smith Wesson revolvers to modify them to a round butt configuration.
FrankenMauser
New member
TiG is most commonly used by professionals; and TiG (GTAW) or MiG (GMAW) during manufacturing - such as welding the barrel lug to H&R single-shot barrels.
Bubbas in their shed often ruin a good gun by pulling out the MiG, SMAW (arc), or oxy-acetylene rig to fill holes or weld broken tangs back on receivers; and getting too much heat in the part (or localized area).
Receivers, some bolt parts, and certain other parts - yes.
Non-critical parts and barrels - generally, no.
Some parts are only case-hardened or only need to be hardened in certain areas. A Mauser-style bolt, for example, can have a bolt handle welded on without the need to re-harden the part as long as measures are taken to prevent the locking lugs and cocking cam from getting too much heat.
Bubbas in their shed often ruin a good gun by pulling out the MiG, SMAW (arc), or oxy-acetylene rig to fill holes or weld broken tangs back on receivers; and getting too much heat in the part (or localized area).
It depends upon the function of the part.Would you have to re heat treat the barrel and other parts afterwards?
Receivers, some bolt parts, and certain other parts - yes.
Non-critical parts and barrels - generally, no.
Some parts are only case-hardened or only need to be hardened in certain areas. A Mauser-style bolt, for example, can have a bolt handle welded on without the need to re-harden the part as long as measures are taken to prevent the locking lugs and cocking cam from getting too much heat.
Jim Watson
New member
Yah, they make heat sinks and heat control pastes for such work.
I think TC attaches underlugs to round barrels by electron beam welding.
There is some use of laser welding in fine applications.
I think TC attaches underlugs to round barrels by electron beam welding.
There is some use of laser welding in fine applications.
dakota.potts
New member
In the military parts kit rebuilding community, all types of welding are common to take a torch cut receiver and weld it back together (TIG, MIG, some people even using wire feed). Think Sten, Uzi, H&K roller locks, ppsh41/pps43, Sterling, Suomi, pretty much any surplus parts kits that are imported to the US that people have found a way to rebuild.
Any Oxy/acetylene rig is useful for brazing and soldering parts such as barrel ribs on shotguns or sights on barrels.
It is typically not extensive welding done on guns themselves. I have done a bolt handle as mentioned. I have seen a couple of beavertails TIGed onto small handguns to extend a grip. I once saw an angle plate welded to the bottom metal of a rifle for use as a barricade rest in PRS competition.
I have been told that MIG is preferable for welding on muzzle devices due to the lower heat but I have never done this myself so I don't know. High temp silver solder (1400*) can be used as well =.
Any Oxy/acetylene rig is useful for brazing and soldering parts such as barrel ribs on shotguns or sights on barrels.
It is typically not extensive welding done on guns themselves. I have done a bolt handle as mentioned. I have seen a couple of beavertails TIGed onto small handguns to extend a grip. I once saw an angle plate welded to the bottom metal of a rifle for use as a barricade rest in PRS competition.
I have been told that MIG is preferable for welding on muzzle devices due to the lower heat but I have never done this myself so I don't know. High temp silver solder (1400*) can be used as well =.
reynolds357
New member
Just out of curiosity, why are you welding on muzzle devices? I have done it only one time and it was to make a muzzle brake non removable and thus make a 14" barrel legal. Is there another reason to weld on a device?
IMO, I would not weld on any gun without TIG. TIG is much more localized. MIG and most everything else will over heat and stress/warp the gun.
Think of it this way. If I heat the whole part welding hot, it is all liquid and becomes a puddle. It I heat just the smallest area to mix base metal and filler, most of the rest of the gun does not get hot enough to change shape. Therefore, the heat affected zone is minimized and the base material properties are left in tact.
Think of it this way. If I heat the whole part welding hot, it is all liquid and becomes a puddle. It I heat just the smallest area to mix base metal and filler, most of the rest of the gun does not get hot enough to change shape. Therefore, the heat affected zone is minimized and the base material properties are left in tact.
Disclaimer...not a Certified welder (but know one).
Not the case that MIG has a larger HAZ than TIG. DC TIG, being slower inputs more heat into the part than short circuit transfer MIG.
So I've been told... there seems to be this mentality of lumping a cheap Chinese flux core machine in with all MIG welders, as though MIG is a red-headed stepchild capable of only half-azzed jobs on trailer in a field somewhere.
I luv my Lincoln MIG...
Not the case that MIG has a larger HAZ than TIG. DC TIG, being slower inputs more heat into the part than short circuit transfer MIG.
So I've been told... there seems to be this mentality of lumping a cheap Chinese flux core machine in with all MIG welders, as though MIG is a red-headed stepchild capable of only half-azzed jobs on trailer in a field somewhere.
I luv my Lincoln MIG...
Here's how you put the best parts of a 740 or 742 that the rails have worn out on back into service:So if I wanted to say repair the worn out internal rails one of those old semiauto hunting rifles
* Using a #1 straight-bladed screwdriver, remove the front and rear sights.
* Set them aside, discard the rest.
* Get a 740 or 742 that works well (if there is such a thing) and attach the sights.
Done!
All sarcasm aside, unless you want to dedicate your life to machining and welding and machining and welding and machining and welding, give it up. There are newer versions of those guns. Get one of them.
I know those guys (Pullman) and have watched them weld with I think it was a microscope hooked up to a monitor. They can do some amazing things with metal and are a very specialized nitch business.
More on topic, I have mig welded my share of mauser bolts with the appropriate heat settings and heat sinks.
More on topic, I have mig welded my share of mauser bolts with the appropriate heat settings and heat sinks.