MG34 Sem Auto Tutorial

[Pirate]

I have started the new tutorial for doing the receiver reweld with my weld jig.

Here is the link: http://www.projectguns.com/mg342.html

I am redoing all the photos and need to get a couple more parts to finish the receiver so it will take a couple of weeks to complete.
As soon as it is done I will also do one for the bolt and grip. TNW sells a kit with all the parts you need to do the bolt and grip and the trip lever. it comes with drawings and instructions. It is $180.00, a real bargain. the trip lever is not in the photo.

use this thread for questions.

[Pirate]

I added to the tutorial today.

Also I corrected the welding rod type, it is E308 not E301

As soon as I finish the welding part I will see what I can do about tutorials for the trigger and bolt.

[Pirate]

the receiver tutorial is finished.

[Bil]

Pirate-thank you-that is great.Clear pics,lots of info.I appreciate all the work you put into this. ---bil

[Pirate]

Pirate-thank you-that is great.Clear pics,lots of info.I appreciate all the work you put into this. ---bil

Thanks, now you got the jig and instructions lets see some finished rewelds!!

[BELTLEAD]

Pirate, Thank you.
Also for the nice tutorial you provided. I feel like I'm at a gun college (Gun projects 101).You are the Gun Professor.

[Abominog]

I added to the tutorial today.

Also I corrected the welding rod type, it is E308 not E301

As soon as I finish the welding part I will see what I can do about tutorials for the trigger and bolt.

I just asked my welder about this and he says 308 is stainless. That strikes me as odd, as why would one want to use stainless on a MG34 semi build? AFAIK it won't match when finished because of the different metal, and I'm thinking "stainless"?

Of course, I know nothing so any insight would be great.

[ironsights]

It helps to think of steels in terms of their content rather than whether they're classed as stainless or not. 308L rod is commonly used to repair iron parts; it has very low carbon content so there is less martensite formed in the heat affected zone. The MG34 receiver is ductile iron rather than steel and has a higher carbon content so using mild steel filler would make the weld harder to work, brittle and prone to cracking.
You're right though, it may be harder to get a consistent finish.