Mount a vise to it and pound the dogshit out of that bench. That's what you made it for. Once you get that well used patina to it, then you'll be satisfied that you built a bench worthy of being in the garage.
OK..seriously, It is worthy of being in the house. I hope that as far as being a workbench, you really don't plan on bashing it up or doing that type of work on it. Your skills are great. Some details to the bench would really help some others build one although I don't think most would use clear lumber for a garage. I know I'm not going to show it to my wife or she would want one for her building. Lol!!!
no, it's clearly overkill for a beat to **** type work bench... I have a much cheaper pine and doug fir one that I can do that with... This is more for layout work, and maybe detail work that requires a clean surface.
As for details, there really aren't too many.. sscustom right above me has more detail in his $70 bench video than I can provide... I just used simple joints... the key was very precise measures and very precise pre-drill holes to attach it all. Otherwise it's not fancy at all... wish it was!
The top required a few clamps, and some patience in making sure the boards were close to the right size, as sanding that much mahogany is a lot of work, and even with a plane it took some time to get it flat. Then I used my Festool saw to cut the ends even, and while the clamps were still on, I attached the top to the bottom with 3/16" screws that were long enough to go at least 1.5" into the top, being careful to avoid the seams. Pre-drilling the top was critical as mahogany is very hard and has almost no give.
A nice piece of Cocobolo was lastly glued and using a 23 gauge brad nailer, attached..
Sanded everything from 80, to 150, then 220..
The Tung oil was the final step and what brings out the beauty of the fine quality lumber.
This is where I am a bit unsure as to what to do next.. I will apply another two coats with 24 hours between to the top, but then I'm not sure if I want to coat it with wax or not... I'm not sure how the wax will do, since I hear pure tung oil can take weeks to fully cure.