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Mailbox Post - Detective work or weld if?

Slowbra

Well-known member
Joined
Jun 5, 2012
Messages
276
Location
NC
Over the weekend my dad accidentally backed into my mailbox. This created some nasty damage on his car and left me with a broken post. I wasn’t too worried about it until I went to remove the post today to replace it.

The post appears to be some odd ball based on my hours of searching the interwebs for a replacement. There appears to be a ground mount with four screws that attach to the base of the post. There also appears to be four bolts that hold the mailbox to the post. For the life of me I can’t find this darn post - guess I need some detective work to track this down.

I’m toying with perhaps welding the broken base as a last resort - looks to be some cast aluminum.

Questions are 1) anyone know what kind of post system this is? I’d love to easily find a replacement. 2) any tips for welding cast aluminum?
 

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Firebrick43

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May 12, 2015
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13,988
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West central Indiana
Welding cast aluminum is typically a tig job, and other than OMC ‘s beautiful castings your bound to bring up ****. I welded up a friends 67’ corvette alternator(they were actually srialized and it matched the car) ear a couple of months ago and despite being hot tanked, and cleaned to the hilt I still had to grind out **** that kept coming out. After 4 or five cycles it had no visible porosity. I couldn’t imagine welding an ornamental piece which was/is **** metal.

I would use an oxy acetylene torch to blaze it. Harris has an AlBraz alloy and make sure you use their flux as well. Muggyweld has a popular product as well but I refuse to use them due to the sales techniques.
 

The Cobbler

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Oct 24, 2013
Messages
25,812
Location
Niagara Region, Ontario, Canada
I'd be inclined to pour a concrete pier , set the post in it, remove the concrete around the outside. when the concrete has cured, drill into the sides & fasten it .
or find a post that slips inside of it and set it into the concrete, set your post over top
 
OP
S

Slowbra

Well-known member
Joined
Jun 5, 2012
Messages
276
Location
NC
Welding cast aluminum is typically a tig job, and other than OMC ‘s beautiful castings your bound to bring up ****. I welded up a friends 67’ corvette alternator(they were actually srialized and it matched the car) ear a couple of months ago and despite being hot tanked, and cleaned to the hilt I still had to grind out **** that kept coming out. After 4 or five cycles it had no visible porosity. I couldn’t imagine welding an ornamental piece which was/is **** metal.

I would use an oxy acetylene torch to blaze it. Harris has an AlBraz alloy and make sure you use their flux as well. Muggyweld has a popular product as well but I refuse to use them due to the sales techniques.

Great suggestion. Thank you.

I'd be inclined to pour a concrete pier , set the post in it, remove the concrete around the outside. when the concrete has cured, drill into the sides & fasten it .
or find a post that slips inside of it and set it into the concrete, set your post over top

This is definitely my backup idea. Simple.
 
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BD1

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Mar 18, 2007
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4,602
Location
north side
What about cutting a wood like a 2x12 to match base. Fasten that to existing in ground,drill holes in upright, and screw upright into wood.
 
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