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Looking for suggestions to remove bolts efficiently. I have stripped paint and drilled out putty with brad pointed drill. Taking the first plank off is tough. Had my daughter on the inside with socket. I stripped some bolt heads.
Nuts that came off allowed easy removal of bolts with use on "Black and Decker screw extractor".
I want to try drilling 7/16 hole in center of putty and using screw extractor to remove nut and extract. Has anyone attempted this ? The downside may be possible damage to surface fibers as plug comes out ahead of bolt head.
Any suggestions are welcomed.

I use a scratch awl or ice pick to remove the putty and clean the heads of the screw or machine screw. Then I use a manual screw driver to back the machine screw out. Sometimes the nut spins so I attach a small vise grips to it and wedge it against the hull or something else. I have never had any problems removing the machine screws cleanly without damaging the wood.

Nix the power tool and do it slowly as desribed above.

Andreas