Chuck Stone
04-28-2014, 11:45 AM
I had to pull the tube again to replace resistors. No biggie, I'm getting to
be a pro at that. I thought I had aligned everything afterwards, but I'm
noticing that the engraving is much lighter at the top of the table as
compared to the bottom. The first 6 inches or so are very light.
I re-aligned and still have the problem. Ran some tests to confirm.
Then I noticed that I'm getting a stray reflection coming off of the last
mirror (in the lens housing) that I can't figure out. After about 5-5 inches
of travel along the X axis, the red dot starts reflecting back toward the
3rd mirror and hits one of the belt clamps. I can see it because I replaced
one of the clamps with one I made, and it's a lighter color. This may have
been happening for a while, but not seen on the black clamp.
I'm assuming that since the red dot and laser beam line up, that the beam
is probably going back and hitting the clamp, too. (could that be why the
last one failed?)
But bow does the light bounce back off of a mirror aimed 45° away? I've
checked the mirror for cracks, nothing I can see even under strong light
and magnification. I wondered if a crack in the lens might reflect back
into the mirror, but don't see a problem there either.
I'm scratching my head here.. figured the gurus of SMC might have an idea..
be a pro at that. I thought I had aligned everything afterwards, but I'm
noticing that the engraving is much lighter at the top of the table as
compared to the bottom. The first 6 inches or so are very light.
I re-aligned and still have the problem. Ran some tests to confirm.
Then I noticed that I'm getting a stray reflection coming off of the last
mirror (in the lens housing) that I can't figure out. After about 5-5 inches
of travel along the X axis, the red dot starts reflecting back toward the
3rd mirror and hits one of the belt clamps. I can see it because I replaced
one of the clamps with one I made, and it's a lighter color. This may have
been happening for a while, but not seen on the black clamp.
I'm assuming that since the red dot and laser beam line up, that the beam
is probably going back and hitting the clamp, too. (could that be why the
last one failed?)
But bow does the light bounce back off of a mirror aimed 45° away? I've
checked the mirror for cracks, nothing I can see even under strong light
and magnification. I wondered if a crack in the lens might reflect back
into the mirror, but don't see a problem there either.
I'm scratching my head here.. figured the gurus of SMC might have an idea..