Rod concrete removal

How do I get the stub, rusted into the concrete, out? I remember just pushing it into the hole I drilled in the concrete, but it is _well_ seated now, hammering it didn't move a thing, and only 1/16" of an inch above grade.

I imagine I'll have to drill it out, but what kind of bit do I use? While drilling into iron, I will of course scrape into some concrete as well. Kinda stopped to look at this a bit... ;) Just a regular iron-drilling bit, & figure on it not doing any other jobs in the future?

Don't want to use anything that throws much spark, this being a dusty old barn....

--->Paul

Wanted it done, couldn't find any stainless in town, so I'llbe redoing it again in 20 years.

Drilled it down 1/4" with a regular bit, then the concrete stopped that. So, what do I have to lose, put in the masionary bit, & it just drilled down, nice & neat. Little pile of concrete dust, no idea where the old metal went, & didn't waste time looking. :)

One of those days, I put the rod in the band saw, & a rubber band spit out, the blade quit moving. :( Grabbed the hack saw, 2 strokes & the blade busted. :( Grrrr. Could not find the masonary bit I _know_ I have, so to town to buy a new one....

--->Paul

You can use a 12v/6v battery with a piece of copper clad carbon rod, available at any welding supply co.

Take the negitive battery lead to base of rod and use positive lead to carbon rod. Stick the carbon on the center of the piece top be removed till it turns red and work out wards in a circle. What this does is to soften the steel so it can be drilled easy. Only softens about 1/16" deep each time so it'll be slow going but it can be done. Maybe a cold chilsel would help this along.

Plan "B", Nitric acid will disolve steel but doesn't hurt glass. A 3/4" glass tube about 2" long stuck to the concrete with silicon? (unsure about reaction with silicon or ATV) for a seal then add the nitric acid and let it sit for a few days.
Nitric acid will burn skin tissue very severe, soda neutralizes so get some baking soda to keep close by with lots of fresh water. Face shield with eye protection is a must! It's not real fast acting on skin so don't panic but get it washed off imeaditly. There will be a yellow skin stain for a couple months. Do not breath fumes!

T_Bone