I have a t bucket and the welds On the dropped tube axle and hairpin radius arms Are good welds but need smoothed out a little. I was thinking of hand filing them and using a filler either bondo or maybe a metal filler to smooth them. Any advice would be great.
Pics would help, how you go about dressing them up depends on the weld method. If it is an option i would probably take it to somebody that TIG welds and let them make a p*** over it, that might clean it up. MIG welds are terrible hard, you'll have a hell'uva time taking a file to it. Post a pic, somebody on here has dealt with exactly what you are doing and they'll fix you right up.
A fairly large diameter rotary file on a air die grinder should turn the trick. Don't go crazy removing material, just smooth out whats there, and be careful of undercutting the brackets. When I say "fairly large" I mean something in the range of 3/8" or larger.
For what it is worth, NO racing ***ociation will allow grinding on structural welds. There must be some reason for that, huh.
I am just gonna hand file a couple of spots that are higher than the rest of the weld. Looks like the weld ran a little bit.
If you are just softening a couple high spots, I'd try a flap wheel. I've seen them as small as 2" with a 1/4" stem, for die grinders, or the normal 4-4 1/2' variety. I've also seen them for Dremel tools, but I imagine they would deplete pretty quickly.
I'd usually say if you have to ask how...don't. But seeing as how those lumps are just the stop/starts, it can't hurt if you bring them down to the height of the rest of the weld without touching the parent metal. A file should take care of that in no time at all.