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MG34 Sem Auto Tutorial

Ask your build questions here. Welding, assembly, etc.
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Pirate
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MG34 Sem Auto Tutorial

Postby Pirate » Wed Nov 07, 2007 6:30 pm

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.
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tnwsemikit.jpg

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Pirate
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Re: MG34 Sem Auto Tutorial

Postby Pirate » Wed Nov 14, 2007 7:29 pm

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.

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Re: MG34 Sem Auto Tutorial

Postby Pirate » Thu Nov 15, 2007 7:31 pm

the receiver tutorial is finished.

Bil
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Re: MG34 Sem Auto Tutorial

Postby Bil » Thu Nov 15, 2007 9:50 pm

Pirate-thank you-that is great.Clear pics,lots of info.I appreciate all the work you put into this. ---bil
"I dream of a world where I can buy alcohol,tobacco and firearms from the same drive-up window,and use them all on the way home from work!" Dogbert

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Pirate
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Re: MG34 Sem Auto Tutorial

Postby Pirate » Fri Nov 16, 2007 6:12 pm

Bil wrote: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

Re: MG34 Sem Auto Tutorial

Postby BELTLEAD » Fri Nov 16, 2007 8:56 pm

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. :)

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Re: MG34 Sem Auto Tutorial

Postby Abominog » Wed Apr 01, 2015 10:54 am

Pirate wrote: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.
FNG

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Re: MG34 Sem Auto Tutorial

Postby ironsights » Thu Apr 02, 2015 6:42 pm

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.


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