I love Warmoth & I keep buying them and making them, but I will echo the official site - they don't do a final leveling & crowning of the frets, and they do recommend this if you want really low, shreddy action. I can get by with playing Warmoths with the frets fresh off the boat, but it always feels much better after I do the first level, crown & polish. The issue is more noticeable the larger the fret size. After I had assembled my last guitar with extra-large 6100's and tried to play it for a few back-to-back 5-hour-a-night bar band gigs, I
had to take a few hours and round off the fret ends cause they were eating up my fingers. It's a sweaty gig with lots of 70's barre chords, far more treacherous than my living room....
I have seen $200 Ibanezes (Ibenai?) with better fret finishing than Warmoth, and I have seen $1500 Gibsons with far worse. I'm not planning on initially fussing with the ends on my upcoming seven-string, but I'm mentally
prepared for it if needed - they're stainless 6105's and they look pretty good. If you do have to do it, often just taking the very tiniest wire-edge off the frets is sufficient, 400->1500 gray wet/dry sandpaper & finish with 0000 steel wool will do the trick. I don't personally play many chords with my thumb over the top, so I really only concentrate on the treble side ends. These things are really handy:
http://www.stewmac.com/shop/Fretting_supplies/Polishing_and_abrasives/Fingerboard_Guards.html The little slot is too narrow for many frets, but you still can hold them up against the side of the fret.
I'm not trying to scare you off, just be aware that sometimes, some people who play a lot need to do more fret finishing than others. I would highly, highly recommend you buy Dan Erlewine's book, "Guitar Player Repair Guide", before or concurrent with lighting into your project. It will tell you almost everything about almost everything and save you literally thousands of dollars over a lifetime - you just don't have to pay somebody else to keep up your gear.
I consider the possible need for fret crowning & finishing to be a regular part of setting up
any guitar, and it's a pretty low initial expense (though over the years I do seem to have accumulated quite a few files, hmmm). The biggest difference between a $400 Guitar Center Fender and a $2000 Tom Anderson is a 3-hour fret crown 'n' polish and a decent setup...
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In the long run if you're scared of fret finishing, you'd better get used to playing with teethy frets.... :laughing8: