I wouldn't recommend using solder in an attempt to recoat the electrical traces of the variable speed switch, rather, I'd get a replacement switch for it and do the repair correctly.
Trying to jerry-rig the switch like that could cause a more serious issue, like burning up the drive motor, etc.
Here's a place that has replacement parts (and a nice exploded drawing of the tool too) that should help you out. If the part isn't currently available from them, you can search elsewhere for another supplier.
What i think you are asking is , if you sunt/short the wires togerther will the switch work. no. if that is true then the tool will continuously run. lowe's has a great selection of dremel tools and accessories. get a new switch. i may have miss it.
Answers & Comments
I wouldn't recommend using solder in an attempt to recoat the electrical traces of the variable speed switch, rather, I'd get a replacement switch for it and do the repair correctly.
Trying to jerry-rig the switch like that could cause a more serious issue, like burning up the drive motor, etc.
Here's a place that has replacement parts (and a nice exploded drawing of the tool too) that should help you out. If the part isn't currently available from them, you can search elsewhere for another supplier.
http://www.ereplacementparts.com/dremel-400-xpr-variable-speed-rotary-tool-parts-c-15440_15456_15610.html
The switch part number is 2610920711.
Hope you find this Very Helpful and best regards!
What i think you are asking is , if you sunt/short the wires togerther will the switch work. no. if that is true then the tool will continuously run. lowe's has a great selection of dremel tools and accessories. get a new switch. i may have miss it.