These are my T-post tools. I have used a sledge hammer to drive them but got this driver and was grateful I did. So much easier. I wear leather gloves as it will tear my hands up, my hands are not nearly as tough as they were when I was a kid. It is kind of heavy getting it into place. I'll pound a couple of times until it is self-supporting and then walk away a bit to look at it from two different directions to see if it is going in straight.
I used to use a chain and another T-post to pull them when I couldn't dig or rattle them out. Sometimes they are not that hard to pull but I don't see a good reason to get a hernia trying. Persistence is good but stubbornness can be painful. The longer the lever arm the more force you generate so I'd try to get a long lever arm. Sometimes the T-post I was pulling with would bend. Then one day Bay posted a photo of her T-post puller she was using at the time. I got one from Tractor Supply the following Tuesday, my normal shopping day. It is heavy, You have to pay attention or you will pinch a finger. There is a bit of a technique in wrapping the T-post with a chain but this is so much easier.
Of course, if you have heavy equipment like a Bobcat or tractor so you can lift and can get access, that has to be the easiest way.
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