I built this as a proof of concept part only. Since I haven't tested it
for suitability in actual road and weather conditions, and because
I have no knowlege or control over other peoples' printer quality, I
can't recommend that anyone print this for actual road use.
That said, I was having difficulty finding wiper blades to fit my 2011
VW Jetta TDI. The wiper connector on this year's model is
apparently unique and hard to fit. While I can go to the dealer
and pay a little over $40 for a set of blades, it feels wrong to reward
them for requiring a proprietary connector on something as simple
as a wiper blade without at least examining ways to use something
This adapter lets you connect a standard US wiper blade to the
2011 VW Jetta TDI.
I printed this one in a tan color so you could see it in the pictures, I
recommend black for most cars, but some people may prefer a color
that compliments their paint scheme.
See the instructions tab for print and assembly details
I chose to use ABS as PLA melts in summer temperatures and
cracks easily in the winter.
I printed this part with .2mm layers and 50% infill with support.
Print these pieces in the orientation they are downloaded. It does
require support as they are positioned, but this orientation minimizes
the risk of the parts cracking during assembly.
Once printed, remove the support material and dry fit them together
before gluing. The bottom piece has an alignment groove on each
side near the top that slides into the opening on the other (top) part.
See the second to last picture. Please note that they should fit
together tightly without any play.
Once you're comfortable with the fit, put some glue in the four
places indicated by the last picture and slide the parts together. The
glue is what actually holds the parts together, not the alignment
grooves, so be sure to glue it well with an appropriate glue.
When dry, install the bottom part onto a standard wiper blade and
install that whole assembly onto the car.