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AR15.COM
5/26/2015 8:14:42 AM EDT
All three of my step kids inherited old worn out Savage single shot bolt guns from their grandpa. They were from the Scouts marksmanship program until the no longer fired reliably.  They suffer from excessive headspace due to wear.



I was going to have the worn spot welded but my friend is a machinist and he did spot nickel plating in the navy. He has done it in 20+ years so I was hoping someone here has done it and has pointers.

I have transformers down to 5V and possibly lower.  I have solution and an anode on the way. Any special techniques to applying the solution?
5/26/2015 9:07:04 AM EDT
[#1]
Look into electroless nickel platting.  It's slower but more corrosion resistant.
5/26/2015 9:37:29 AM EDT
[#2]
My understanding is less voltage takes longer but puts down a better coating.
5/26/2015 9:49:28 AM EDT
[#3]
How much material do you need to add? Nickel is not very hard and would wear quickly, electroless nickel is about twice as hard as spot, hard chrome would be an even better choice for plating if you need more than a few thousandths of an inch but would require grinding. TIG welding would be the best bet if a lot of material needs to be added. Weld with a tool steel or alloy rod but it will be more difficult to tool back into the proper form and the surrounding material would be annealed. It could be re-hardened after if you want to go to the trouble and expense.
5/26/2015 10:27:03 AM EDT
[#4]
Quote History
Quoted:
How much material do you need to add? Nickel is not very hard and would wear quickly, electroless nickel is about twice as hard as spot, hard chrome would be an even better choice for plating if you need more than a few thousandths of an inch but would require grinding. TIG welding would be the best bet if a lot of material needs to be added. Weld with a tool steel or alloy rod but it will be more difficult to tool back into the proper form and the surrounding material would be annealed. It could be re-hardened after if you want to go to the trouble and expense.
View Quote


I think it will wear okay for a .22 bolt. The room temperature process is really attractive on an assembly like this one.

I'm trying to keep the costs down and do it myself. The rifles aren't worth much. I need to add about .010".

How many amps do I need at 3 to 5v?
5/26/2015 10:28:52 AM EDT
[#5]
Take that to a welding shop that does TIG welding and get it welded. They will be able to TIG it up and not cause any heat damage. Easy to finish.