I recently bought a 97 Lincoln Mark VIII to fix up, and shortly after discovered that while the AC blows cold, there was no heat on any setting. As someone who often buys, fixes and sells cars, this is nothing I wasn’t prepared to deal with, or so I thought…
So I did some basic research, it turns out this is a pretty common problem with these cars, as the motor that actuates the hot/cold blend door under the dash is known to fail with age. The plastic gets brittle over the years, and eventually cracks. The part itself was really inexpensive, had I been able to buy one. The picture below show the original part, and the broken pieces above it.
So I gathered up the broken pieces, and scotch-taped them back together. I measured the old part with calipers and modeled it back up in Inventor. I even made some minor improvements to add strength and prevent the same fate. Then I sent the model to our 3d Printer and printed 2 copies right away. When the dashboard was reassembled, the printed part worked perfectly.
I believe the future of 3d printing is going to be huge. Every day people are coming up with more new ways to leverage this technology. After my experience above, I started thinking about all the past hours I have spent scouring swap meets and searching online for some little bracket or piece of trim that was holding up a build. Now I realize that if I can just get it modeled or scanned into 3d data, I can print just about anything.