How it's Made is a Canadian show - they are pronouncing those the way many Canadians do. Although I have to say I've never heard the l pronounced in "solder" even in the US.
I wince when people say "niche" as "nitch" or "clique" as "click" but I've learned to accept that it is how it's said in many parts of the US.
...so how do you pronounce those? Not sure if it will change my pronunciation, but I'd at least know what it ought to be. I now just avoid the word 'forte' since I learned that 'x-skill is not my forte' should be pronounced 'fort' - but the rest of the world knows it as for-tay, like in music, so I look wrong when I pronounce it correctly...
I've only ever heard it said "forte" as "for-tay" as in French. I looked it up: http://en.wiktionary.org/wiki/forte
"Traditionally, forte (“strength, talent”) was a one-syllable word, like its French etymon. Perhaps due to confusion with forte (“loudly”), a two-syllable pronunciation also came into common use. Both pronunciations are now standard."http://en.wiktionary.org/wiki/niche
has audio files, three from the US, pronouncing "niche" three different ways. It originally was a french word, and I personally prefer the french pronunciation.http://en.wiktionary.org/wiki/clique
"clique" is also from French, and should be "cleek", but as with many words, the proper pronunciation has been muddied by common usage in some areas.
Another word that bugs me is "suite". It's "sweet". I'd only ever heard it that way until I lived in the south for a while, and kept hearing talk about "bedroom suits" (That's how it was pronounced.) I looked it up once and apparently when talking about bedroom furnishings, saying "Suite" as "suit" is also considered correct. Still bugs me though! http://dictionary.reference.com/browse/suite