Homebrew PCBs

I just used a Foredom foot controller with an old Dremel and a
newer MultiPro. Both are very choppy and only work when the footpeddle
is all the way down. Add the lightbulb and you get smooth full range.
Turn the Dremel to halfspeed and you get a slower range. The lightbulb
develops the voltage the Triac in the footswitch needs to operate
correctly. A resistor would also work across the Dremel. I used a
Christmas type lightbulb in a candelabra replacement socket. You might
have a reostate type foot peddle which uses Nichrome wire to drop the
voltage. You got lucky!


--- In Homebrew_PCBs@yahoogroups.com, "izzo47" <izzo47@...> wrote:
>
> Ok, then mine(Dremel Drill) is maybe 12-15 yrs old and the foot pedal 
> is even older. I guess I just got lucky.
> 
> --- In Homebrew_PCBs@yahoogroups.com, "crankorgan" <john@> wrote:
> >
> >      A Dremel MultiPro has a speed control built in. It will not run
> > off some speed control units unless you put a small lightbulb across
> > the Dremel. Older Dremel models will work with a second speed
> > controller. I use a 6 watt candelabra bulb inside my computer
> > controlled speed unit.  
> > 
> > 
> > --- In Homebrew_PCBs@yahoogroups.com, "izzo47" <izzo47@> wrote:
> > >
> > > If you want to make your drill a real varible speed drill try 
> this.
> > > Get you hand on a table model sewing machine foot padel. This way 
> you 
> > > can bring the drill bit to the place where you want to make the 
> hole 
> > > then lightly press ...you won't slide off so much this way. Your 
> drill 
> > > is a 0 - whatever rpms now, works great with my Dremil.
> > > izzo
> > >
> >
>