Blueing over welds

[Daskraut]

When welding using oxy/acet. how does the welding rod change the color when blueing ?, can you blue over braze?, what can be used as a filler to take care of voids in the weld other than more steel rod and welding?(want to minimize heat) . This is NOT for a shooter so save the comments about the primitive welding equiptment. It is for a display gun that I do not want the welds to show up on. I figure I will practice on my garbage receiver parts so when I get my phili, I will do a nice job. I have never blued before, and the guy in the store said it could be affected by rod/material choice, Any help would be great. Thanks.

[Karbinator]

I honestly do not know this answer, because I've never blued any of my braze work.
I seen your post, and hate to see it sit there with no coment, and you checking all the
time .... thinking no one can see it.
I seen somewhere, perhaps at 1919 bbs, a topic about this, and a guy suggested doing
a mock chunk of steel that WILL blue, and braze a line across it. then get your agent out, and
see what happens.
I'm going to venture that most here are TIG'ng their recievers, so the answer may rest in
experimantation.
Please let us know....... This deserves to be adressed in the FAQ memo under a new topic of
Welding tech's, along with stick, mig, tig.... etc

skip in Va.

[TOM R]

I also am unsure bout the braze rod but I know pdstout said on his post sample rewelds he just welds and blues the weld area not the whole gun? unfortunatly i am still far from bluing mine need to tweek and weld wish I could help

[Daskraut]

Well I answersd my own question. In goofing around with my receiver pieces, I joined some , then glass beaded, then blued. Other than some warping and porosity, the blueing looks good. I just used coat hangers for welding rod (remember, non-shooter) and that blueing stuff works great!. When I finally get my phili and my barrel shroud, I think I could do it........but will pay someone to tig or mig it.

[slowfinger]

Daskraut, Tig weld your reciever as AK47Dennis suggests because of all the cleanup with mig weld. I miged mine and spent two hours each reciever smoothing out things and fitting parts! Next weld is definatly going to be tig for me.... Slowfinger

[Daskraut]

When I set out to build a semi auto unit down the road (once I figure how to make cal legal, no handgrip, and tripod mount only I think), then I will do some proper welding, but this is display only for now, plus, when the REAL welds gets done, it will be hidden behind the trunnion......so it really does not matter yet. The test pieces all blued very nice, just a little lighter than original.