Generic Parametric Scope Cover
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Flip up cover for any scope
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Updated at source:
Model information
- Source
- Printables
- Category
- Outdoor Sports
- License
- Creative Commons — Attribution — Noncommercial
Make it fit your scope
Measure the outside diameter of your scope with calipers.
Add 0.5mm to that measurement for the right fit.
In Fusion 360, open Modify > Change Parameters and enter that number for the “Size” variable.
Everything else resizes automatically. The other parameters (Cap_wall, cap_depth, Up_Length) are also there if you want to tweak the cap.
Parts needed
Bungee cord: (any 1/8 inch bugeee cord)
1x M3x8 SHCS screw
Setup
There are two ways to mount it, and the photos show examples of both:
Screw-on mount: Secure it with the M3x8 screw if you have room on your scope rings.
Cord-only mount: If you don’t have room for the screw on your rings, run the bungee cord under and around the scope and tie it off at the other end.
Included sizes
I included a few pre-made STLs that I made for my own scopes: [list sizes, e.g. 46mm, 65mm]. If you don’t have Fusion 360, tell me your scope’s diameter and I’ll make one for you.

Printing
I printed mine in PETG, and it’s held up great. There are no special settings, so your normal profile will work fine.
If you print one, post a photo in Makes. I’d love to see it on your scope.