Tips for Bolting Post Holders to Optical Tables, Bases, and Breadboards | Thorlabs Insights

A common, unfortunate result of securing a post holder to a base or optical table is threads poking up through the bottom of the post holder. These exposed threads limit the height adjustment range offered by the post holder. Additional frustrations can result after rotating the post in the post holder, since this can unintentionally screw the post onto the exposed threads.

The solution is to keep screw length in mind when selecting a setscrew or cap screw to secure a post holder. In this video, observe consequences unfold due to threads projecting up from the bottom of the post holder, and learn techniques for overcoming this problem. The options of securing a post holder to a base or directly to the table are also compared.

Components used in this demonstration include Ø1/2" post holders, a base, Ø1/2" posts, cap screws, setscrews, and an iris.

A sequel (    • Mounting Your Optomech: Bases, Post H...   ) to this Video Insight provides tips for using optomechanical components to build a stable foundation under an optical setup, as well as to avoid accidental damage to the components.

0:00 - Introduction
0:48 - Techniques for Attaching Post Holder to Base
1:24 - Agony of Screw Threads Sticking Into Post Holders
2:21 - Attaching Post Holder Directly to Table or Breadboard

Components used in this demonstration include:
- Ø1/2" Post Holders: https://www.thorlabs.com/newgrouppage...
- BA2 Base: https://www.thorlabs.com/newgrouppage...
- Ø1/2" Posts: https://www.thorlabs.com/newgrouppage...
- Cap Screws: https://www.thorlabs.com/newgrouppage...
- Setscrews: https://www.thorlabs.com/newgrouppage...
- Iris: https://www.thorlabs.com/newgrouppage...
- Balldrivers: https://www.thorlabs.com/newgrouppage...

For more photonics how-to videos, visit https://www.thorlabs.com/newgrouppage....