Longer focal length = larger spot size, lower energy density and greater depth of field.
The difference between the Gast 71R and the glorified aquarium pump that came with the laser cannot be...
Type: Posts; User: Rich Harman; Keyword(s):
Longer focal length = larger spot size, lower energy density and greater depth of field.
The difference between the Gast 71R and the glorified aquarium pump that came with the laser cannot be...
I have found the 63.5mm (2.5") lens to be best for cutting.
I 3d printed a bracket to hold a length of 1/8" aluminum tubing bent so that it aims the air assist directly at the cutting point 1/2"...