Dusk-to-Dawn Bolt Adapter

I recently purchased a replacement Dusk-to-Dawn control switch for my converted gas-light to low-voltage outdoor light assembly.

The original photocell light switch model had a much larger eye pattern, and the new design looked out of place. In the photos, I attached a replica of the original design, and a photo of the new design with the much smaller bolt.

Current Charm-Lite Design:
https://www.charm-lite.com/index.php?main\_page=product\_info&cPath=1&products\_id=7

Print instructions

Category: Outdoor & Garden Print Settings

Printer Brand: Prusa
Printer: I3 MK3S
Rafts: No
Supports: No
Resolution: .2
Infill: 100%
Filament: MatterHackers PETG Black Build Series

How I Designed This

Customizer + Meshmixer
I mocked up a couple of simple bolt patterns via Customizer, and then used Meshmixer to pull the two designs into a single bolt. I recycled the retaining nut that was with the original design.

Total Length of both designs was 14mm
Nut: M10x1.0x14mm -- added 9/16" hex to aid in loading onto the photocell
Bolt: M21x1.5x14mm -- added 7/8" hex to aid in loading onto the photocell

Created with Customizer!
https://www.thingiverse.com/apps/customizer/run?thing\_id=193647

Customizer Values
Using the following options:
type = bolt
head_type = hex
head_diameter = 22.23 ~7/8"
head_height = 6
thread_outer_diameter = 21
thread_step = 1.5
step_shape_degrees = 45
thread_length = 8

nut_type = normal
nut_diameter = 14.29 = 9/16"
nut_height = 14
nut_thread_outer_diameter = 10.3 (added some wiggle room)
nut_thread_step = 1
nut_step_shape_degrees = 45