Quote:
Originally Posted by raggedjim
I did get the other fender off. Unfortunately trying to tighten to the breaking point stripped out the threads on the bolts! So I continued drilling them out, using a good drill with cutting fluid.
Scrapping undercoating, it is a joy.
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Great Progress again today for you.
Myself
I am working on one of my better half projects.
I have used Wd-Forty or brake cleaner to soften the undercoating.
About the drilling of those bolts.
Here is my detailed process.
#1= HSS (High Speed Steel) center drill the Bolt.
Link:
https://www.grizzly.com/products/gri...its;%20Grizzly
Just an Example link.
#2= Drill the head of the bolt 25% less than the diameter of the bolt.
This gives you 12.5% if you drilled Off Center.
Then only drill to a Depth of the head of the bolt.
#3= Then take an Impact drill/ air ratchet / air gun and try to tighten them till they break off.
#4= If they still spin/ Then I put Vice grips on the nut/ Then step up the drill size tell the head of the bolt goes away.