[s-cars] HID lights group buy - $185/set delivered

[Dave Ellis]

I didn't use a mask, just used a felt pen to mark the cut first.  The 
beam pattern mask is upside down and backwards, but I expected this from 
a lens.  Just bend the beam mask out, mark the cut from the notch in the 
center of the DOT beam pattern to the bottom of the outside alignment 
tab (there's a small alignment tab on each side of the mask), and then 
cut.  Takes about five minutes per low beam one the headlamp is 
disassembled.  I used some fine sand paper to remove the burs and smooth 
the edge out again, then bent the tab back in to it's original position.

The DOT mask is like this:

        |                             |
        |              _______________|
        |______________|


Once cut it looks (something) like this, but at a much less severe angle 
(imagine the diagonal cut ending where the right edge does in the top 
ASCII illustration:

        |                 /
        |                /
        |               /
        |______________/


Just to be on the safe side before I actually cut the mask, I inserted a 
paper cutout of my planned cut and then shone a pen light beam through 
the lens assembly onto the wall to ensure I was going to get the beam 
pattern I was looking for.  I used on old euro beam Hella headlight 
assembly from an old Volkswagen I used to own to compare the "new" low 
beam pattern to an actual euro beam pattern.  They matched, so I went ahead.

-Dave



LL - NY wrote:
> I've been planning to do this, just haven't the time. BTW, do you have
> a pattern (i.e., is the mask image reversed, as I would expect or upright?)
>                                                                  /
> (bad ASCII art   do you cut like this? ----------/
> 
> or this?     /--------------
>               /              
> 
> I know the other parameters are availible at Stern's website.
> 
> TIA,
> 
> LL - NY
>