John H wrote:
On Mon, 15 Jan 2018 18:48:43 -0500, Alex wrote:

John H wrote:
On Mon, 15 Jan 2018 13:47:33 -0500, wrote:

On Mon, 15 Jan 2018 02:23:21 -0500, wrote:

On Sun, 14 Jan 2018 23:37:16 -0500,
wrote:

On Sun, 14 Jan 2018 22:09:37 -0500, wrote:

45 years ago I was in a bar in Chicago and they had a laser deal that
plotted the 2 channels of the sound system as a Lissajous pattern on
the back wall.
I tried to make one using an old Neon laser and mirrors on speaker
drivers about 40 years ago. It was almost working when the free used
laser I had crapped out. Now that laser diodes cost less than a stick
of gum I wanted to try again. What is the best way to steer the laser?
Piezo crystal or some kind of mirror solution

===

I'm not an expert on piezo crystal optics but I think you'll have more
fun engineering an electromechanical linkage to a mirror. It will
also be more intuitive and use readily available components.

That was my thinking before I started working on laser printers but
these days it is a pretty mature science and those parts may be as
cheap as lasers. I found out the first time down the rabbit hole, you
need a 1st surface mirror. A regular silver on glass mirror creates a
ghost image. I ended up with a dental mirror sans handle, epoxied to a
coil spring with arms going out to 2 small speaker cones 90 degrees
out. The laser I had was a neon, about 1.5" in diameter and a foot
long that needed a HV power supply to spark up. These days you can get
a diode that runs on 4.5vdc. Just about the time I got the geometry
right, my laser broke.
I came up with another laser down here but it was pressed into service
at the flower store and went with the store. That design was still a
little funky and I wanted to try something different.
I really don't believe that in the 70s they were using a crystal tho.
We did us one in a 3800 but it only deflected in one axis.
I may be missing a whole different concept in steering a laser. I
thought Richard may have dabbled in this stuff.

===

I'm assuming you'd need two mirrors - one for X axis positioning and a
second for the Y axis. There are lots of devices with fairly bright
lasers these days. Perhaps you could get one on EBAY or at a garage
sale. Of course you'd need to be happy with either red or green. I've
got some green gun sight lasers that are fairly bright, and there are
lots of laser pointers around that are allegedly bright enough to
blind aircraft pilots.

---
This email has been checked for viruses by AVG.
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Greg could buy this for me. I'd take out the laser and send it to him -- free!

http://www.kimberamerica.com/micro-9-cc

Such a deal!

Over $100 off MSRP here but I'm sure you can find it cheaper!

https://www.eurooptic.com/KIMBER-330...m--330010.aspx
No way would I ever buy one. I see people at the range with those things and laugh my ass off.
They'll shine them at a target and watch them bounce around. In a few seconds they must get
embarrassed and shut 'em off. Never to be seen again.


I had a cheap one that I put on a Glock rail and found it to be pretty
useless. I gave it away. I do have a Surefire on my Beretta that I
keep loaded in the house. That thing is crazy bright.

wrote:
On Mon, 15 Jan 2018 20:45:21 -0500, Keyser Soze
wrote:

On 1/15/18 8:32 PM, wrote:
On Mon, 15 Jan 2018 18:24:22 -0500,
wrote:

It has been pointed out to me that you can just get a "visualization"
file for a MP3 player that does this exact thing on a big screen TV.
===

Yes, but it wouldn't synchronize with your music.
Why not if it was the MP3 player generating the visualization?
That is what visualizations are. Usually they are so complex the
linkage to the music is not immediately apparent.


Don't forget the water fountains that are synchronized to the Muzak, er,
music, that you enjoy.
That is another strange thing that fascinates me. I have thought about
trying to make something like that for the pool since I have a pump
going anyway. The trick is finding valves that open and close fast
enough. The diaphragm valves in washing machines, sprinkler systems
and ice makers won't cut it.
I don't know if Wayne noticed it but I am roughed in for a fountain or
waterfall sort of thing in a corner of the pool already. There us an
additional 2" and 3/4" pipe going there, in addition to a return from
the pool pump that is on a valve now. (pipe is cheap and easy to put
in when the ground is open. Later not so much)

I did make a water cannon (Bellagio style) that would shoot a quart
sized slug of water across the river once for my neighbor. He wanted
to wet down people speeding in the no wake. He never actually had the
chance to use it tho. The diaphragm style 1" sprinkler valve was fine
for that but I was unloading a tank of air, not the water itself. The
water was sitting in a pipe in the river. A couple of cubic feet of
100 PSI air gave it quite a ride. Thanks to "Modern Marvels" I found
out that is how Bellagio does it.


These have something added to the water:

https://www.youtube.com/watch?v=0XqIAWK60-8

Its Me wrote:
On Tuesday, January 16, 2018 at 7:06:33 AM UTC-5, John H wrote:
On Mon, 15 Jan 2018 20:40:44 -0500, wrote:

On Mon, 15 Jan 2018 18:54:03 -0500, John H
wrote:


No way would I ever buy one. I see people at the range with those things and laugh my ass off.
They'll shine them at a target and watch them bounce around. In a few seconds they must get
embarrassed and shut 'em off. Never to be seen again.
Lasers are not intended for slow fire bullseye shooting. They are
really for quick point and shoot situations or times when you can't
establish your normal hold or sight picture. (weak hand shooting from
behind cover or something)
I had one on my Ruger KP90 for a while and took it off. It seemed like
more of a distraction than a help. This was an early one that did not
really have great switch operation tho. I forgot about it until now.
That might be a good laser to play with for this project.
I think folks are fooled by the movies. They see the little red dot show up on someone's forehead or
chest, very still and perfectly centered, and think, "By damn, that's what I need!"
Saw a show last night with a person "on the run" in a town square, and a still red dot appeared on his chest. A guy came up to him and told him a sniper had him in his sights so he'd better give up the goods.

Heh. At long range a sniper would *not* be using a red dot. Of course, Hollywood suppressors also barely make a sound. Limousine liberals believe all this stuff.

Many real suppressors barely make a sound. You just hear the action of
the firearm unlike the strange sound they use in movies.

On Tuesday, January 16, 2018 at 7:58:31 PM UTC-5, Alex wrote:
Its Me wrote:
On Tuesday, January 16, 2018 at 7:06:33 AM UTC-5, John H wrote:
On Mon, 15 Jan 2018 20:40:44 -0500, wrote:

On Mon, 15 Jan 2018 18:54:03 -0500, John H
wrote:


No way would I ever buy one. I see people at the range with those things and laugh my ass off.
They'll shine them at a target and watch them bounce around. In a few seconds they must get
embarrassed and shut 'em off. Never to be seen again.
Lasers are not intended for slow fire bullseye shooting. They are
really for quick point and shoot situations or times when you can't
establish your normal hold or sight picture. (weak hand shooting from
behind cover or something)
I had one on my Ruger KP90 for a while and took it off. It seemed like
more of a distraction than a help. This was an early one that did not
really have great switch operation tho. I forgot about it until now.
That might be a good laser to play with for this project.
I think folks are fooled by the movies. They see the little red dot show up on someone's forehead or
chest, very still and perfectly centered, and think, "By damn, that's what I need!"
Saw a show last night with a person "on the run" in a town square, and a still red dot appeared on his chest. A guy came up to him and told him a sniper had him in his sights so he'd better give up the goods.

Heh. At long range a sniper would *not* be using a red dot. Of course, Hollywood suppressors also barely make a sound. Limousine liberals believe all this stuff.

Many real suppressors barely make a sound. You just hear the action of
the firearm unlike the strange sound they use in movies.

You can't hide the crack of a round going supersonic. That happens outside the suppressor.

If you want to be really quiet, you use a bolt action, and there is no "action" sound. A semi-auto lets all kinds of noise escape.

Agreed, the movie sound effects are not real.

On 1/16/18 7:58 PM, Alex wrote:
Its Me wrote:
On Tuesday, January 16, 2018 at 7:06:33 AM UTC-5, John H wrote:
On Mon, 15 Jan 2018 20:40:44 -0500, wrote:

On Mon, 15 Jan 2018 18:54:03 -0500, John H
wrote:


No way would I ever buy one. I see people at the range with those
things and laugh my ass off.
They'll shine them at a target and watch them bounce around. In a
few seconds they must get
embarrassed and shut 'em off. Never to be seen again.
Lasers are not intended for slow fire bullseye shooting. They are
really for quick point and shoot situations or times when you can't
establish your normal hold or sight picture. (weak hand shooting from
behind cover or something)
I had one on my Ruger KP90 for a while and took it off. It seemed like
more of a distraction than a help. This was an early one that did not
really have great switch operation tho. I forgot about it until now.
That might be a good laser to play with for this project.
I think folks are fooled by the movies. They see the little red dot
show up on someone's forehead or
chest, very still and perfectly centered, and think, "By damn, that's
what I need!"
Saw a show last night with a person "on the run" in a town square, and
a still red dot appeared on his chest.Â* A guy came up to him and told
him a sniper had him in his sights so he'd better give up the goods.

Heh.Â* At long range a sniper would *not* be using a red dot.Â* Of
course, Hollywood suppressors also barely make a sound.Â* Limousine
liberals believe all this stuff.

Many real suppressors barely make a sound.Â* You just hear the action of
the firearm unlike the strange sound they use in movies.

Almost, assuming you are using a firearm with a short barrel and
subsonic ammo, and if you are using a firearm without a reciprocating
bolt/action...you can have a really quiet experience. My CZ bolt action
rifle was damned quiet with the suppressor and subsonic ammo, but my CZ
semi-auto rifle isn't as quiet, because of the bolt. My CZ SCORP is
quiet with a borrowed suppressor and subsonic 9mm ammo, but noisier than
the CZ .22 LR rifles.

On Tue, 16 Jan 2018 19:58:23 -0500, Alex wrote:

Its Me wrote:
On Tuesday, January 16, 2018 at 7:06:33 AM UTC-5, John H wrote:
On Mon, 15 Jan 2018 20:40:44 -0500, wrote:

On Mon, 15 Jan 2018 18:54:03 -0500, John H
wrote:


No way would I ever buy one. I see people at the range with those things and laugh my ass off.
They'll shine them at a target and watch them bounce around. In a few seconds they must get
embarrassed and shut 'em off. Never to be seen again.
Lasers are not intended for slow fire bullseye shooting. They are
really for quick point and shoot situations or times when you can't
establish your normal hold or sight picture. (weak hand shooting from
behind cover or something)
I had one on my Ruger KP90 for a while and took it off. It seemed like
more of a distraction than a help. This was an early one that did not
really have great switch operation tho. I forgot about it until now.
That might be a good laser to play with for this project.
I think folks are fooled by the movies. They see the little red dot show up on someone's forehead or
chest, very still and perfectly centered, and think, "By damn, that's what I need!"
Saw a show last night with a person "on the run" in a town square, and a still red dot appeared on his chest. A guy came up to him and told him a sniper had him in his sights so he'd better give up the goods.

Heh. At long range a sniper would *not* be using a red dot. Of course, Hollywood suppressors also barely make a sound. Limousine liberals believe all this stuff.

Many real suppressors barely make a sound. You just hear the action of
the firearm unlike the strange sound they use in movies.

They don't all go 'phhhhttt'?

On Tue, 16 Jan 2018 21:03:11 -0500, Keyser Soze wrote:

On 1/16/18 7:58 PM, Alex wrote:
Its Me wrote:
On Tuesday, January 16, 2018 at 7:06:33 AM UTC-5, John H wrote:
On Mon, 15 Jan 2018 20:40:44 -0500, wrote:

On Mon, 15 Jan 2018 18:54:03 -0500, John H
wrote:


No way would I ever buy one. I see people at the range with those
things and laugh my ass off.
They'll shine them at a target and watch them bounce around. In a
few seconds they must get
embarrassed and shut 'em off. Never to be seen again.
Lasers are not intended for slow fire bullseye shooting. They are
really for quick point and shoot situations or times when you can't
establish your normal hold or sight picture. (weak hand shooting from
behind cover or something)
I had one on my Ruger KP90 for a while and took it off. It seemed like
more of a distraction than a help. This was an early one that did not
really have great switch operation tho. I forgot about it until now.
That might be a good laser to play with for this project.
I think folks are fooled by the movies. They see the little red dot
show up on someone's forehead or
chest, very still and perfectly centered, and think, "By damn, that's
what I need!"
Saw a show last night with a person "on the run" in a town square, and
a still red dot appeared on his chest.* A guy came up to him and told
him a sniper had him in his sights so he'd better give up the goods.

Heh.* At long range a sniper would *not* be using a red dot.* Of
course, Hollywood suppressors also barely make a sound.* Limousine
liberals believe all this stuff.

Many real suppressors barely make a sound.* You just hear the action of
the firearm unlike the strange sound they use in movies.

Almost, assuming you are using a firearm with a short barrel and
subsonic ammo, and if you are using a firearm without a reciprocating
bolt/action...you can have a really quiet experience. My CZ bolt action
rifle was damned quiet with the suppressor and subsonic ammo, but my CZ
semi-auto rifle isn't as quiet, because of the bolt. My CZ SCORP is
quiet with a borrowed suppressor and subsonic 9mm ammo, but noisier than
the CZ .22 LR rifles.

Whatever it is, yours is better!

John H wrote:
On Tue, 16 Jan 2018 19:58:23 -0500, Alex wrote:

Its Me wrote:
On Tuesday, January 16, 2018 at 7:06:33 AM UTC-5, John H wrote:
On Mon, 15 Jan 2018 20:40:44 -0500, wrote:

On Mon, 15 Jan 2018 18:54:03 -0500, John H
wrote:


No way would I ever buy one. I see people at the range with those things and laugh my ass off.
They'll shine them at a target and watch them bounce around. In a few seconds they must get
embarrassed and shut 'em off. Never to be seen again.
Lasers are not intended for slow fire bullseye shooting. They are
really for quick point and shoot situations or times when you can't
establish your normal hold or sight picture. (weak hand shooting from
behind cover or something)
I had one on my Ruger KP90 for a while and took it off. It seemed like
more of a distraction than a help. This was an early one that did not
really have great switch operation tho. I forgot about it until now.
That might be a good laser to play with for this project.
I think folks are fooled by the movies. They see the little red dot show up on someone's forehead or
chest, very still and perfectly centered, and think, "By damn, that's what I need!"
Saw a show last night with a person "on the run" in a town square, and a still red dot appeared on his chest. A guy came up to him and told him a sniper had him in his sights so he'd better give up the goods.

Heh. At long range a sniper would *not* be using a red dot. Of course, Hollywood suppressors also barely make a sound. Limousine liberals believe all this stuff.
Many real suppressors barely make a sound. You just hear the action of
the firearm unlike the strange sound they use in movies.
They don't all go 'phhhhttt'?

You would think so. It must be a stock soundbite they all share.

On Wed, 17 Jan 2018 20:05:55 -0500, Alex wrote:

John H wrote:
On Tue, 16 Jan 2018 19:58:23 -0500, Alex wrote:

Its Me wrote:
On Tuesday, January 16, 2018 at 7:06:33 AM UTC-5, John H wrote:
On Mon, 15 Jan 2018 20:40:44 -0500, wrote:

On Mon, 15 Jan 2018 18:54:03 -0500, John H
wrote:


No way would I ever buy one. I see people at the range with those things and laugh my ass off.
They'll shine them at a target and watch them bounce around. In a few seconds they must get
embarrassed and shut 'em off. Never to be seen again.
Lasers are not intended for slow fire bullseye shooting. They are
really for quick point and shoot situations or times when you can't
establish your normal hold or sight picture. (weak hand shooting from
behind cover or something)
I had one on my Ruger KP90 for a while and took it off. It seemed like
more of a distraction than a help. This was an early one that did not
really have great switch operation tho. I forgot about it until now.
That might be a good laser to play with for this project.
I think folks are fooled by the movies. They see the little red dot show up on someone's forehead or
chest, very still and perfectly centered, and think, "By damn, that's what I need!"
Saw a show last night with a person "on the run" in a town square, and a still red dot appeared on his chest. A guy came up to him and told him a sniper had him in his sights so he'd better give up the goods.

Heh. At long range a sniper would *not* be using a red dot. Of course, Hollywood suppressors also barely make a sound. Limousine liberals believe all this stuff.
Many real suppressors barely make a sound. You just hear the action of
the firearm unlike the strange sound they use in movies.
They don't all go 'phhhhttt'?

You would think so. It must be a stock soundbite they all share.

A "recycle bin" suppressor for a .22rf sounds about like my CO2 BB
gun. That is a piece on 1.5" PVC pipe, caps and a hand full of milk
bottle caps. I have to believe the one Harry has several hundred
dollars in must be quieter.

On 1/17/18 9:57 PM, wrote:
On Wed, 17 Jan 2018 20:05:55 -0500, Alex wrote:

John H wrote:
On Tue, 16 Jan 2018 19:58:23 -0500, Alex wrote:

Its Me wrote:
On Tuesday, January 16, 2018 at 7:06:33 AM UTC-5, John H wrote:
On Mon, 15 Jan 2018 20:40:44 -0500, wrote:

On Mon, 15 Jan 2018 18:54:03 -0500, John H
wrote:


No way would I ever buy one. I see people at the range with those things and laugh my ass off.
They'll shine them at a target and watch them bounce around. In a few seconds they must get
embarrassed and shut 'em off. Never to be seen again.
Lasers are not intended for slow fire bullseye shooting. They are
really for quick point and shoot situations or times when you can't
establish your normal hold or sight picture. (weak hand shooting from
behind cover or something)
I had one on my Ruger KP90 for a while and took it off. It seemed like
more of a distraction than a help. This was an early one that did not
really have great switch operation tho. I forgot about it until now.
That might be a good laser to play with for this project.
I think folks are fooled by the movies. They see the little red dot show up on someone's forehead or
chest, very still and perfectly centered, and think, "By damn, that's what I need!"
Saw a show last night with a person "on the run" in a town square, and a still red dot appeared on his chest. A guy came up to him and told him a sniper had him in his sights so he'd better give up the goods.

Heh. At long range a sniper would *not* be using a red dot. Of course, Hollywood suppressors also barely make a sound. Limousine liberals believe all this stuff.
Many real suppressors barely make a sound. You just hear the action of
the firearm unlike the strange sound they use in movies.
They don't all go 'phhhhttt'?

You would think so. It must be a stock soundbite they all share.

A "recycle bin" suppressor for a .22rf sounds about like my CO2 BB
gun. That is a piece on 1.5" PVC pipe, caps and a hand full of milk
bottle caps. I have to believe the one Harry has several hundred
dollars in must be quieter.



On a CZ bolt action .22LR rifle with my "Sparrow" suppressor, CCI
"standard velocity" subsonic ammo produces a sound not unlike the
proverbial "pffffft." On my CZ semi-auto rifle, the same suppressor and
ammo setup produces a sound like an office electric staple gun. It does
not produce a sound like an ammo retort. Most of the noise comes from
the action of the bolt. The latter is very similar to the sound produced
by semi-auto .22LR pistols...the bolt action is louder than the round.

This is a good video on the Sparrow...and at the end, instead of
shooting at steel targets, he shoots into a dirt bank and you can "hear"
how little noise is produced.

https://www.youtube.com/watch?v=xKGXW5tp71Q

Here's the suppressor I'm getting for my CZ SCORP. This guy has it
mounted on an SBR, which I do not have... the actual testing starts
around 2:39 into the video. The last ammo tested is 158 grain
subsonic...and it is damned quiet.

https://www.youtube.com/watch?v=nstV2MHhp4o