Nicely done dude, seriously, the tool may look crude but this a case were function is more important than form.
Getting tooled up is a lifetime process, I have a long way to go myself. I'm fortunate enough to have a good friend with a bad tool habit. He loaned me the caliper and time on the drill press.
I made my output flange puller out of stacked up washers welded together, now that baby is crude...but it worked.
"The secret to a long life, is knowing when it's time to go"
"The best of men is only a man, at best"