Antenna Delete for Honda Insight

This is a simple print to replace the antenna on your Gen1 Honda Insight. Obviously, you will no longer receive radio stations very well or at all. I solely listen to music from my phone via Bluetooth to my head unit, so this is fine with me.

It requires an M5x12 hex-head bolt that is embedded in the print. The head should be 8mm on the flats and no more than 4.2mm tall. Stainless is a good material choice. Zinc may galvanically corrode with the brass antenna insert.

Important! Printing notes:
- The insight_antenna_nub.stl file has modeled-in supports. I recommend using this file, but NOTE: You must set your first layer height to 0.24mm and the overall layer height to 0.12mm. Otherwise, the modeled support gaps may not slice correctly. Check the preview!
- If you wish to use your own supports or slice at a different layer height, a no-supports file is included. But again NOTE: You must raise the print off the bed by at least 3mm (the bolt sticks out 2mm from the bottom when inserted). Since PrusaSlicer doesn't support raising parts off the bed, you'll need to add an additional body, merge the parts, and position them appropriately. Make sure the supports don't block the hole for the bolt shaft!
- I'd recommend at least 3 perimeters, if you'd like to sand/polish the part.
- ASA is a good choice for UV and temperature resistance, though PETG and ABS would also be good choices.
- IMPORTANT! Don't forget to set a pause at the right layer to insert the bolt!

When printed at a fine layer height in ASA, the part looks great as-is, though quite matte, whereas the antenna mount on the car is somewhat glossy. I chose to sand and polish my print.

I found it very effective to use an M5 nut and another bolt to easily hold the nub while working on it. I chucked the hold-bolt in a drill and used that to wet sand the layer lines down with 800 grit sandpaper. I then polished it with toothpaste on a paper towel, then finally with ordinary printer paper.

This worked quite well, as you can see from the photos. It's far from perfect but it's absolutely good enough for my standards, especially from the distance you'd normally see it from while it's on the car.