Call me chicken, but I know Scrubbing Bubbles works just fine, so I'll pass on boiling or using any other chemicals.
I have never used the scrubbing bubbles, so I was just brainstorming with my post. Does the scrubbing bubbles actually polish it too, or just clean it?
For most "new to me" used razors I will bring a pot of water to a hard boil and remove it from the heat, drop in the razor and leave it be until it is cool to the touch, then have a go at it with scrubbing bubbles. Of course as Steve said, any gold plated razor doesn't get the boil treatment.
IF the finish was intact in the first place, Scrubbing Bubbles will bring back the luster if the haze was caused by hard water build up or soap scum, its not an actual polishing agent so to speak like Brasso, its a bathroom cleaner.
You can get a lot of razors in the dishwasher. Haven't tried it though thought maybe that could be an occasional mass grime blaster on all your razors at once... Anyone ever run one through a cycle with good results?
are you talking about cleaning a new to you used razor or just keeping your daily shaver clean? I have been using the same Muhle for a year and a half and when finished shaving I just give it a good rinse in hot tap water and a shake. When I change the blade I'll give it a better rinse in hot tap water and a towel dry. Shiny as the day I got it. Or you could get yourself one of these and just leave your razor in it. http://www.amazon.com/Barbicide-Manicure-Table-Jar-Size/dp/B000YD486U
I have several Three-Piece Lord-Clones (I think the Lord brand may in fact be a clone itself of a Tech, so I think I have a clone of a clone). Although it takes more doing to put a blade in, each piece is easy to clean on its own than having a TTO (twist to open) with knooks and crannies. I personally just rinse each piece with hot water and then I'll take a towel and rub/buff the pieces dry until they are shiny like new.
When I'm in the position of disposing of the blade, I give the razor parts a good alcohol bath. Isopropyl does just fine. 75%, 90%, doesn't matter. 75% is concentrated enough to do the job effectively. A bottle can be had for a dollar and change at Wally World.... When I take it out, I just shake all the bits & pieces off & then detail dry it w. a q-tip & then put it back together. When it's time to put a blade in, I stick one in there. I rotate between razors, so I don't put a blade in there if I'm not going to be using it anytime soon. I pour the alcohol BACK into the bottle. I mark the bottle RAZOR CLEANER so nobody uses it for 1st aid purposes.
I just thought of something that worked great. I have a Sonicare toothbrush and I kept a couple of old brush heads the last time that my wife and I replaced the heads. Tonight, I put on an old brush head and used scrubbing bubbles on a 40 years old razor and......it is soooooo easy! I highly recommend trying this. It may be a reason to buy a Sonicare if you don't already own one.
I have hard water... what I do sometimes is just an old tooth brush a tiny bit of liquid hand soap. It seems to work well, might not be as much as anything else but over all the time I have done this I think it has cost me 10 cents . Not the best way but meh. Works for me fairly well.