Keith Anderson is a master of what he does: painting bicycle frames, both restorations and new projects. He is world-renown for his delicately-masked paint and here’s a perfect example of how the master masks. The above photos shows him masking a window in a bottom bracket lug.

And here’s the final product. Insanity. This is only the tip of the iceberg. If you want to have your mind blown, check out his Flickr.