Soldering is normally done using something like lead or tin - which melt at a fairly low temperature (I vaguely remember it is around 188 degrees C with the soldering iron temperature about double that). Brass requires much more heat and the use of a (gas) brazing torch, at around 450 degrees C. Dunno about chrome, although I've used nickel rods for brazing cast iron in the past (similar appearance to chrome) - anyone in the know? Didn't think you could braze chromium.
BTW if my temperatures are wrong, I apologise, they are from hazy recollections of more than 30 years ago when I was taught, however I've just finished doing some copper pipework this morning (Yorkshire fittings, so solder with a brazing torch) so at least I know HOW to do it if not bthe absolute physics :lol:
I think the question has to be, what are you trying to join?
Sounds more like the lead or pewter that is used in decorative leaded glass. Polished pewter is bright silver (like chromium, but not as glossy), but having a high lead content it will solder readily and cuts fairly easily. Have you tried looking bat any of the stained glass forums like Stained Glass Town Square (http://stainedglasstownsquare.com/) or the Creative Glass Guild?
I found a hobby site that sells small a4 sheets of perspex for a couple of quid, I just need to know how much delivery is.As I have found sometimes dlivery charges make the final total sky rocket.They havnt got back to me yet(
I could borrow a jigsaw to cut bits or I have a hand saw.