I don't know if a rotational tumbler would work or not for a razor as the vibratory type are quite gentle cleaning & polishing. I have run my tumbler for three days for a couple razors the other day with just walnut. I haven't run them with the corn cob yet. Keep in mind that I haven't used a rotational tumbler for anything other than my wife's little tumbler for rocks...I just "think" it may be a bit aggressive. On the other hand, if you had a larger tub and did one razor at a time you may have good success if the tub was 2/3-3/4 full of media. It would defiantly work quicker. It's probably one of those things that would work great or just the opposite.