First of all, let me commend you, sonicares, for your resourcefulness! A mod put together with extremely basic tools and works is a definite win in my book; you, sir, are ready for the zombie apocalypse / rise of the machines!
That said, I believe the other posters are not trying to put your mod down, just showing you the impracticality of its executuion in the long run. I whipped up a little diagram made in mspaint showing the cross section of a wire on a connector. The top one is twisted on and the bottom is soldered. Note the surface area connection between the two. If both wires represent 18g wire, the top one is about equal to soldering a wire the size of a hair strand. You will experience great losses in current in every one of these connections, thereby not giving you the best performance.
Still, great mod! Thumbs up!View attachment 64079
That said, I believe the other posters are not trying to put your mod down, just showing you the impracticality of its executuion in the long run. I whipped up a little diagram made in mspaint showing the cross section of a wire on a connector. The top one is twisted on and the bottom is soldered. Note the surface area connection between the two. If both wires represent 18g wire, the top one is about equal to soldering a wire the size of a hair strand. You will experience great losses in current in every one of these connections, thereby not giving you the best performance.
Still, great mod! Thumbs up!View attachment 64079