Copper Razors - Heat Retention, Patina & Heft. Opinions?

Haha. I spent about an hour on it with a microfiber cloth, some metal polish, and lots of elbow grease, but it wasn't like a mirror or anything. I just wanted to get rid of the matte bead blast look before starting the patina and it did the trick.

Yeah, that seems to kind of be the procedure. I have some Flitz and microfiber cloths, I'm just always afraid somehow that I'll ruin it.

Nah, you won't. Just don't go too crazy on the underside of the top cap or top of the baseplate.

Yeah, that is what I worry about. I don't think I would do under the top cap. I don't see the need for that. Would like to do the plate but don't want to ruin the geometry. Maybe I give myself too much credit. I have Flitz but have heard good things about Brasso.

If you are worried about Copper having a date with patina, you could always go the rout of plated Copper. I have the PAA Copper Ascension Twist Adjustable, and its plated in Rose Gold. It has the weight of Copper that you will no doubt love, but the Rose Gold plating protects the Copper, and gives it that added look of beauty that one may desire. Additionally, the design of the razor is a double open comb, which gives it the ability to handle multiple day whisker growth, while retaining the ability to leave some lather on your skin, to make multiple passes, before needing to re-lather. Its a very smooth shaving razor, and its aggression can be adjusted, by a simple slight turn of the handle. Also, the handle that it uses is top notch, it provides plenty of grip, without ever giving you the slip, and it looks really good as well. 

If you are worried about Copper having a date with patina, you could always go the rout of plated Copper. I have the PAA Copper Ascension Twist Adjustable, and its plated in Rose Gold. It has the weight of Copper that you will no doubt love, but the Rose Gold plating protects the Copper, and gives it that added look of beauty that one may desire. Additionally, the design of the razor is a double open comb, which gives it the ability to handle multiple day whisker growth, while retaining the ability to leave some lather on your skin, to make multiple passes, before needing to re-lather. Its a very smooth shaving razor, and its aggression can be adjusted, by a simple slight turn of the handle. Also, the handle that it uses is top notch, it provides plenty of grip, without ever giving you the slip, and it looks really good as well. 

Thanks! I do have the DOC in the copper (which is passivated to avoid patina), the SS and aluminum.

The wrong side of copper is that this is a soft metal and if your razor fall from your hand its head or other parts can be easilly deform.I afraid to spend lots of money for appearance but it couldn't last(ymmv), for me SS and Ti is more favored.

... Another point to copper is the heat retention. It does seem to be able to absorb and retain heat much better than the other metals. ...

I don't think that it can do both equally well.
Copper has a very high thermal conductivity, meaning that heat passes through it very quickly, but that also means that it loses heat very quickly.

Code:

Rank  Metal      Thermal Conductivity [BTU/(hr·ft⋅°F)]
1     Copper     223
2     Aluminum   118
3     Brass       64
4     Steel       17
5     Bronze      15

So, you can heat up copper throughout its entire mass very quickly, but it also means it cools down just as fast, because it's transferring the heat from its mass to your face (and the air). If it perfectly "retained" the heat, it would feel cold. That's why copper makes a good heat sink for electronic circuits. But it's expensive, so aluminum is the compromise choice for heat sinks.

Steel would take longer to heat up, but with a lower thermal conductivity its internal temperature will stay hot longer (i.e. retain the heat), yet be slower to transfer the heat to your face.

A lot of the formulas for calculating heat transfer are remarkably similar to the formulas for electric current.

My shaving routine involves filling the sink with straight hot water (twice). While building and applying lather I leave the razor in the water and drop it back in between passes. It stays nice and warm on the face. I also float the lather bowl (with the brush in it) throughout, so the lather stays warm too. Much warmer than with a modern scuttle.

KETCHUP

This is one of the best ways.  Go the dollar store, buy a ketchup bottle.  

Put your razor in a ziploc bag. Cover it in ketchup.  Let it sit, rinse it off.