Hot shoe holder for Laser 303/301 for DSLRs

Laser 303/301 Adjustable Collimation Adapter for ISO Hot Shoe.

This is a 3D‑printed adapter designed to mount a Laser 303/301 onto a standard ISO hot shoe, with full collimation capability. It provides a stable, adjustable platform for aligning the laser beam in applications such as astrophotography, optical alignment, or general pointing tasks.
 

Features

• Compatible with Laser 303/301 Default version fits the common 22.5 mm body diameter. A variant for the 21.5 mm version of the Laser 303 is also included.
• Adjustable Collimation System The laser can be precisely aligned using six M3 screws. This allows fine‑tuning of the beam direction relative to the mount.
• ISO Hot Shoe Mount Fits standard camera hot shoes and accessories using the ISO profile. The mounting block is reinforced for stability while keeping the print lightweight.
• Button‑Hold Ring Included A separate ring is provided to keep the laser’s power button pressed (ON position). Useful for hands‑free operation when the laser uses a key switch for activation.
• Durable Construction All parts are designed for strength and should be printed with high infill for rigidity in PETG.
   

What do you need to make it? 

• Strong filament, preferably PETG.
• x6 M3 inserts 

• x6 M3 screws
  x1 Laser 301 or Laser 303

   

  Here are places where inserts should be placed:

  

Included Files

• Adapter body 
• Button‑hold ring (22.5 mm and 21.5 mm variants)
   

Notes

• This model is intended for hobby and alignment use.
• Ensure safe handling of high‑power lasers as even brief exposure can cause permanent eye damage.
• The model is designed for PETG, but other strong materials (ABS, ASA, PC blends) may also be suitable.
   

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