- Jul 10, 2015
It looks like about 1/4 of an inch at 50 feet and 1/2 inch at 100 feet.
The beam using this new setup comes out of the beam expander is around 12mm x 14mm but I'm still testing different cyl lens spacing.....Smaller than I can see from 50 feet because the light is so intense I can see the real shape through my safety glasses until a point when I zoom in tight until it goes back to looking round and then I just adjust back and forth in that small zone until it burns the best looking at the volume of smoke. It looks like about 1/8 of an inch but as a round spot at 50 feet and 1/4 inch at 100 feet, the holes I punch in leaves at 100 feet look like about 1/4 inch.
I think it's time for more power because even focused needle thin at 1 inch there are limits, 7 watts wont cut through a soup can or cut through a 1/2 inch branch of a bush, also distance through air seems to absorb some energy.
At 15 feet a 44 with 3 element and 3X makes a line like a large flathead screwdriver, with the addition of the 6X pair and trade the 3 element for a G2 and at 15 feet it just looks like a small round spot 1/8 of an inch because I can't see the real shape even with OD+6 glasses, I could try a 3 second burn at 15 feet and snap a pic, gibe me a couple minutes.
You could not get a spot regardless of lens position, At what distance ?I received my 6x pair from Opt Lasers. Using the 6x pair by itself gave me a decent spot from a NUBM44. I tried combining a 6x with a 4x from LSP but 24x was a bit too much. I could not get a spot regardless of lens position. Just an ugly line and lots of splash. I might purchase a 3x from Opt Lasers so I can try 18x and 12x combinations. I have a testing rig built out of Legos that allows me to move the lenses back and forth while the laser is on.