Help ! Solder Will Not Stick To Blades.

[🪦 papaprut ●]

ok, so here is the deal. I am working on my new Freddy glove and my solder wont stick to the stainless steel blades ( you may ask if you already did one why are you having problems !! Well because my first one was made of Sheet metal). SO, I have no idea whats wrong. The solder is holding to the copper, but as soon as I let it cool down, and remove it from the vice, the blade just like pulls off. I made sure I cleaned the copper well. I also took the post of the blade to my wire brush on my bench grinder to make sure it was clean, and the solder had something to adhere to, but still nothing. Does anyone have any idea why this might be happening ? Could it be the solder ? I included a picture of the solder below.Here is what I am usingropane TorchSilver Bearing Solder <a href=\"http://s473.photobucket.com/albums/rr95/Papaprut/?action=view&current=Picture2-3.png\" target=\"_blank\"><img src=\"http://i473.photobucket.com/albums/rr95/Papaprut/Picture2-3.png\" border=\"0\" class=\"linked-image\" /></a>