Best way to clean fuel tank?

[jeskam]

Had to modify my fuel tank to accept the Holly Lidar fuel sender. I had to create a 1 inch hole in a different place than the stock sender and of course I could not avoid getting metal shavings into the tank. Also need to deburr the inside of the hole that I made and can’t seem to figure out a trick with any of the files that I have to get that done. Any ideas? Tank has never seen fuel.

[michael everson]

vacuum the chips and buy a quick-burr on amazon or similar.
https://www.amazon.com/SHAVIV-29114-Glo-Burr-Handy-Kit/dp/B003JY7LAG/ref=sr_1_8?crid=2SE3V4KAGNTPZ&dib=eyJ2IjoiMSJ9.ftPmfi_Vz-burgz4HsmE5sVpN96WtYjOw2ghz15ZU0cUsOw9NMdH5hibdyde edA1YMJBWvFDhLEO0VrJ0ZnPvBZKtjUpBcFVV8nc6iqcnB-0lALrzN0mv6svI1o6ckPrkfn8W3UCB2p-bcuGtReKHvOvEi3BsXXbr7-vrrFk18eD1X6FoYAEMOB7ifm4bj8rtmCeYAil-1_BUq40Adf1h3Uts_HrLHaHA8j6zC4BaXCRwWDxUEMOEUeDb6K 741NoGBKJk4E0jmJxJxDVQIHgRI5rKWpCWSxhuM1qOL9Evu6k3 _zRzFvsmqFislAO2kPgqegjP67Uxo6QrYXRBtxDV4EThiIEkfB GZyfqB6gN9rRsgqaULBmtJ6UF_6odosrrkeZwtUaOfT3GdINdF DJrtaKtXIhrQtCgWK8TD98W9ju986-yQgTMxYwM7n9asBfg.BRmC8AcMNRXtDYTvo5tTUQ-escYlY-SyzpsmkAHDbOA&dib_tag=se&keywords=quick-burr&qid=1735734552&sprefix=quick-burr%2Caps%2C161&sr=8-8

[cob427sc]

You can remove any residual metal chips by rolling a couple of magnets around inside the tank.

[Blitzboy54]

I had to modify the opening for my pickup. I made the cuts I needed to then used a garden hose and rinsed it. I also wanted to test the tanks for leaks, so maybe overkill. After throughly rinsing out the tank and draining it then swished some rubbing alcohol followed by using a heat gun to dry it out.

There was no evidence of debris after that.