The Shop > Tools
Anybody build Dan Gelbart angled laser centre finder?
PekkaNF:
--- Quote from: Arbalist on April 12, 2015, 10:41:57 AM ---
--- Quote from: PekkaNF on April 12, 2015, 09:28:35 AM ---I either need to get smaller unit or have a way to adjust it optically. Pekka
--- End quote ---
Do you mean the Dot is too big?
--- End quote ---
It looks like dot is small enough, but it is very bright. This I need to verify, but it looks like this 5 mW laser produces really bright spot, to the point that with even moderately reflective surface the dot "glares". On matte black surface the dot looks tiny.
Pekka
Fergus OMore:
I have the old Geometer's articles from Model Engineer called 'Microscope on the Lathe'. OK, it is all as old as Methuselah but nemes.co has still got most of it on the 'net.
Again, it was revived in ME or MEW on something similar which became a kit with Hemmingwaykits.
OK. can someone inform me -and others- what are the advantages of this new toy?
Norman
Arbalist:
--- Quote from: PekkaNF on April 12, 2015, 11:02:44 AM ---
It looks like dot is small enough, but it is very bright.
Pekka
--- End quote ---
Have a look at my earlier post Pekka. You can easily reduce the brightness with a ND filter over the lens. Resin ND photographic filters are easily cut to size and don't cost too much.
BaronJ:
--- Quote from: vtsteam on April 12, 2015, 10:29:49 AM ---I'm just kind of curious -- at the distances we're talking about, small spot size, and using lenses, etc., why does it have to be a laser?
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Unlike an ordinary light source a laser beam is a single essentially parallel beam of light. The light from an incandescent bulb is scattered in all directions.
Arbalist:
--- Quote from: Fergus OMore on April 12, 2015, 11:54:54 AM ---
OK. can someone inform me -and others- what are the advantages of this new toy?
Norman
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Best have a look at the video in post #1 Norman.
Quick and easy to use. And, once we've collectively got the "formulae" right, easy and inexpensive to make. At least that's my take on it. I won't know for sure though till I've made one and tried it! :D
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