Where to source 6x6x96” solid wood posts for turning into porch columns?

[mudrat2]

For lathe work on a small budget, two posts in ground with large steel pins pointed on one end through the posts. Mount the blank between the pins. Spin with a rope wrapped around the blank and use a chainsaw to carve a groove at one end. Now use a loop of belt, rope, braded bailer twine, etc. to drive off of a motor. Rough out the shape using chainsaw, then circular saw. Finish with belt or disk sander.

Look at some ideas here:
http://www.projectgridless.ca/2017/11/five-ways-to-make-off-grid-wood-lathe.html
https://www.farmshow.com/a_article.php?aid=15615

 

[oldercut]

In my area there is a company that sells reclaimed cedar from power
poles. You might inquire your local utility and see what they do with
their poles. Except for the butts, they are not treated.