Routy and Arty are correct that production light amperage crimp jobs using Amp applicators in an Amp crimping machine backed up by all the appropriate statistical controls used by the automotive and aerospace industry (including a full level 3 PPAP with all capability studies and all 17 sections of dedicated process information) are as rugged and reliable as can be. This is most of your electrical connections.
Amp termination equipment used properly makes a darn fine electrical connection. 'sa fact !!
BTW, Amp sez don't twist the wire before putting it in a crimp -- wires get thinned where they cross over each other and get mashed into each other creating deformation zones.
Crimped wires should lay parallel to each other for max integrity and greatest conductive contact after correct crimping height is applied. Where the rolled over crimp edges roll back into the wire mass tends to cut into the twisted crossed over wires the most creating the worst problems.
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What you sometimes might do with a hand crimper to your personally edjumacated eyeball/grip judgment is something else. Most hand crimp jobs tend to be a bit too tight and do both squeeze them little wires down a bit and can slightly pinch the wires at the entry end of the crimp.
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Yes, solder isn't a production level process much any more except in automotive starter brushes which have to withstand hell for high current loads and resistive heating. Then the old fashioned crimp and solder is standard, not optional. It is the most rugged, least resistance, most heat resistant and generally all round best connection between wire and screwed down termination that exists.
Now, do you strip and bend a hook then use the side screws on your electrical wall socket and light switch connections, or do you strip and jam it in straight under the screw head or do you strip and poke into the little one way grippy holes?Don't ferget to tell us why you have that preference .....
And please don't tell us what the pros do, that's why we are having to go back and replace all them electrical fixtures in the first durn place.