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Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: April 28, 2010, 08:10:17 AM »
Hi Dan,
Yes it does have a draft angle because the beam converges from the lens to the exact focal point whereupon it diverges again. I am currently looking at ways to improve this situation either by using a lens with a greater useful focal length or multi-pass cutting at reduced power with Z movement resetting the focal distance on each pass.
The edge finish is not perfect with some vertical styrations similar to a bandsaw cut but at least it is polished and so looks acceptable - I need more practice and experience here !.
The picture was taken with flash and the acrylic is on a sheet of brushed alluminium - Quite a nice effect I thought !.
I will post some more pictures when the camera battery has been recharged.
Tweakie.
Yes it does have a draft angle because the beam converges from the lens to the exact focal point whereupon it diverges again. I am currently looking at ways to improve this situation either by using a lens with a greater useful focal length or multi-pass cutting at reduced power with Z movement resetting the focal distance on each pass.
The edge finish is not perfect with some vertical styrations similar to a bandsaw cut but at least it is polished and so looks acceptable - I need more practice and experience here !.
The picture was taken with flash and the acrylic is on a sheet of brushed alluminium - Quite a nice effect I thought !.
I will post some more pictures when the camera battery has been recharged.
Tweakie.