From the Loftsmith community
Slimmer ring insert
A little peep sight that clamps around a round rod and holds a tiny aperture up at eye line. It's a two-piece clamp with small screws, and a short tunnel on top frames a pinhole you look through. Change the barrel size and the hole to suit your own rod.
3 parts · 11 g · 31 × 30 × 61 mm
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No adjustable sizes
Ask for the sizes you want to tweak, e.g. “make the width adjustable”.
How to print it
Parts
- sight-left · PLA · Front face down, tunnel standing up, no supports
- sight-right · PLA · Front face down, tunnel standing up, no supports
- aperture-disc · PLA · Flat, bar side down
Print settings
- Layer height
- 0.2 mm
- Walls
- 3
- Infill
- 15-20%
- Supports
- None
Hardware
- 2 × M3 x 20 socket head bolt
- 2 × M3 hex nut
- M3 x 8 grub screw · Locks the aperture insert
Assembly
- Press the M3 nuts into the traps in the right half.
- Slide the aperture insert into the tunnel from the rear and push it against the front lip.
- Close the halves round the barrel and tighten the two bolts from the left.
- Tighten the grub screw from the left of the tunnel into the insert groove.
Good to know
- I assumed a 22 mm barrel at the clamp point. Measure yours and set the Barrel diameter slider on Adjust. Also check that the sight height matches your rear diopter.
- The slicer may flag a thin ledge near the front where the tunnel meets the neck. It is cosmetic and shouldn't affect fit.
- The grub screw sits at the tunnel's side with only a thin boss, and the slits in the ring insert are 1.15 mm wide. Print a test insert first and check the fit.
- I haven't tested the fits on a printer.
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