On Fri, 11 Jan 2002, Greg Nuspel wrote:
> All I am trying to do is check if the laser is 90 degrees to the surface
> it is on. I think you could be within 1/32" over 8'. This makes the
> system within 1 minute of perpendicular to the base. I think that is
> pretty good for a homemade alignment tool. All I know is that I haven't
> seen too many drill presses that are set that accurately. That is why I
> said to project the beam over a long distance, the greater the distance
> the greater the accuracy achieved during this adjustment of your tool.
> The most important part is to make sure the surface you are placing the
> laser on is level.
Ah yes, now I see what you were getting at. I had missed that you were
trying to align the laser.
> Once you have the laser aligned perpendicular to it's base make white
> target to place over the laser with a hole the same size as the laser
> beam it's self. It should be easy to see if the hole is over the laser
> by watching the projected beam. When this alignment tool is placed on
> the base of the enlarger it's beam will project upwards to the
> reflective flat surface you have placed on the part you are trying to
> align. Just adjust it so that there is no beam showing on the target or
> it has an even dot around the hole, depending on the spread of the beam.
> I bet most people using something like this could achieve an alignment
> within a few minutes of parallel.
Yep, that's it!
- Wayde
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ISART 2002
International Symposium on Advanced Radio Technologies
http://www.its.bldrdoc.gov/meetings/art/index.html
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