I needed to mount an automobile siren but it turned out that mounting holes that are already drilled differ from what I need. I decided to go with some kind of universal adapter for such needs.

It turned out that 2 things of such kind can literally be used for any mount usecase:

1. Existing holes are on a wrong distance - use this adapter to match yours
2. Existing holes are not aligned - use this adapter to get your level (adapter length is customizable)
3. Existing holes have wrong diameter - use this adapter to match those (end holes diameter is customizable)
4. You need a hanging adapter bec. you are not happy - print one and use it
5. You found it pretty - print a set of 2 and use them as earrings

By default model is designed to transition from one distance between holes to another preserving center. You can adjust your height to mount smth. closer or farther from the existing holes.

Use your imagination and get maximum out of this super-customizable model! For those who dare!

There is a screenshot with all parameters of this model

• Default STL has hole diameter of 4mm and length of 60mm and thickness of 2mm
• Default 4mm hole single part STL has length of 60mm between end holes and thickness of 2mm