filing lugs / shaving off parts
I've been using the bike forums for the answers to all my cycling questions but this is my first post. I searched and found a little on what I'm asking but not much, so here it goes...
I'm restoring a 1982 peugeot ph10. Several components were missing so I just recently purchased another peugeot for parts. Having the extra frame, I figured it would be a great opportunity to build up a clean fixed gear (though typically I'd prefer to restore than completely alter/potentially ruin a bicycle, I just can't get over the look of a super clean simple machine and I have no emotional connection to bicycle I just purchased
Anyways, I'm in the process of removing/filing down the brake housing guides and extra nubs here and there but I was wondering about the lugs and fender bosses (not sure if that's the proper name, I'm talking about the threaded nubs near the front/rear dropouts where a fender/rack could be attached). For the lugs, I was wondering if I would damage/cause structural issues if I filed them down so they smoothly transitioned to the tubing - is this possible? I've seen frames where the lugs smoothly transition but am not sure if this is possible after the fact - especially on a 30 yr. old frame. I wouldn't file the entire lug down; the transition would start from the tubing into 30-40% the lug. If ill-advised, is it at least sound to bevel the sharp edges or round out the points? For the fender nubs, I just want to clean cut them off and was wondering if this could weaken the frame. Since I'm not concerned for the original finish (I'm repainting), I'd like bring the frame down to a most minimal form. Thoughts?