Traveling for the holidays, but I’ll post when I get back to make another run at these. I’m optimistic but cautiously so. Initially, I couldn’t move any of these bolts. I sprayed PB Blaster before I ruined all 6 of them. And 4 of them moved pretty easily after. So maybe a reverse drill can get them, but I appreciate the important of drilling in the center.
Yeah, no question I screwed up drilling them out before slotting. Really I screwed up not starting with PB Blaster because I bet all 6 would have come out. I’ll find out when I do the other wheel. I’m definitely a novice at this, and I’ve no shame in a lesson learned.
Originally Posted by
soyabean
Please do keep us posted on this, because as far as I am concerned, there is no hope for this short of drilling them through and retapping to the next size up.
The OP messed up when they knew they should have slotted the screws, but didn't do so. Not sure why this happened. I do this successfully all the time with water bottle cage bolts. These are the bolts that are the most exposed to water from above.
Pen oil almost never works on anything that seized up. Heat is your friend here, and a burned piece that can be unfastened is much better than unscathed broken bolts.