1) Fix the camera to the arm on your hollowing rig.
2) With the power on to the TV, the receiver, and the camera, turn the tuning knob on the receiver to get a clear image.
3) With the cutter outside of the hollow form or bowl, place your ruler or measuring device on the tip of the cutter.
4) On the TV screen, use a dry erase marker to trace the outline of the tool and cutter head. I use a black marker for this.
5) On the TV screen, use a different dry erase marker (I use red) to draw a semi-circle around the cutter tip that matches the wall thickness you wish to achieve.
IMPORTANT: The image on your TV screen will most likely not be the same as the actual size of your cutter and tool. That is why it is important to use a ruler or some other measuring device that you can see on the screen by your cutter when you draw the red semi-circle.
Periodically, I withdraw the cutting tool and double-check the position with the image on the screen. If you get significant vibration during hollowing, the camera can move a bit off target which could really make for an unpleasant end to your hollowing session!
Also, don’t forget to erase and re-draw the cutting tools image any time you change tools.
Have fun and be safe!
-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"
17 comments so far
DIYaholic
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19921 posts in 3642 days
#1 posted 01-09-2015 10:26 PM
Looks like you have a successful setup.
How long have you been using this?
If you don’t mind, how much was the hollowing rig and the laser system?
I’m curious because, I need to know how much debt I’ll be going into!!! ;^)
Ya know….. If you were to do a video….
All anyone would need to do…. is WATCH!!! ;^)
Thanks for all the details and the sharing….
-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?
TheDane
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#2 posted 01-09-2015 10:50 PM
About 3 months, but just a couple of weeks with the Harrison Simple Hollowing system.
Ron Brown’s system is $80 … the Harrison Simple Hollowing system is $150 … the camera/receiver was under $30 on Amazon.
Yeah, I know … I’m just not ready to go there. Sorry!
-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"
DIYaholic
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19921 posts in 3642 days
#3 posted 01-09-2015 11:02 PM
First off….
Thanks for the cost information.
Seems quite reasonable for such a setup.
Looks like I won’t have to sell a kidney after all!!!
I hear ya, regarding doing a video….
I too, would NOT be comfortable doing a video.
The video “watch” comment was really in reference to “The Captain’s” catch phrase. ;^)
Again, thanks for taking the time to document & share!!!
-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?
TheDane
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5912 posts in 4630 days
#4 posted 01-09-2015 11:06 PM
Yeah … I miss Eddie. I have learned a lot from him. He is on the mend, and hopefully it won’t be long before he is back on YouTube and UStream.
-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"
DIYaholic
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19921 posts in 3642 days
#5 posted 01-09-2015 11:08 PM
I was wondering how Eddie was doing.
Thanks for the update!!!
Carry on….
-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?
mafe
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12844 posts in 4057 days
#6 posted 01-11-2015 07:45 PM
Amazing!
Never seen something like this before.
My first thought were that you could become one hell of a surgeon!
Really impressive, really cool to take use in simple cheap tec to do this – the future are now.
Best thoughts,
Mads
-- MAD F, the fanatical rhykenologist and vintage architect.
TheDane
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#7 posted 01-11-2015 08:35 PM
Just a little audio-visual trickery! But I appreciate the compliment!
-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"
mafe
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12844 posts in 4057 days
#8 posted 01-11-2015 08:44 PM
Big smile, you deserve it.
-- MAD F, the fanatical rhykenologist and vintage architect.
mafe
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12844 posts in 4057 days
#9 posted 01-11-2015 09:07 PM
Next generation of workshops…
Smiles,
Mads
-- MAD F, the fanatical rhykenologist and vintage architect.
kweinert
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41 posts in 4077 days
#10 posted 01-14-2015 06:28 PM
So, I ordered and received a different camera (http://amazon.com/gp/product/B000YM2OIK) and it came in yesterday. I was able to test it out today and it produces acceptable pictures. I’m sure once I’ve gotten it in place on the hollowing system I can fine tune the picture a bit more.
Then, in search of a TV for it I just purchased these from Amazon as well: Headrest monitor (http://amazon.com/gp/product/B007SLDF7O) and a 12v power supply for it (http://amazon.com/gp/product/B006NTNGN0). Those should be in on Friday.
I picked a different camera because I’m a bit leery of items with low reviews. I know that a lot of them are due to the lack of common sense in the people doing the reviews but I’d still rather play the odds.
I’m hoping the 7” TV is sufficient for hollowing. If not I’ll buy a backup camera and use this in the vehicle for what it’s designed to do :)
In the end, for about $50 I have all the pieces I need to try out the visual hollowing system and see if it works. I’ve certainly spent more for experiments that haven’t worked out and all the pieces are usable for other things so I really won’t be out anything if it’s not to my liking.
Thanks for posting this. I’d seen visual hollowing before (it was demonstrated at the local turner’s club once) but until your posting I never really got the hankering to put the pieces together for myself.
-- Experience is a hard teacher because she gives the test first, the lesson afterward. But properly learned, the lesson forever changes the person.
TheDane
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5912 posts in 4630 days
#11 posted 01-14-2015 06:42 PM
Thanks for the update on your progress.
It looks like that 7” monitor has some mounting options. The one thing I might change on my rig is the monitor … it is an old 17” flat screen TV that I put on my bandsaw table about 5 feet away. With the monitor you are using, I might be able to mount it right above the headstock on my lathe.
Keep us posted!
-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"
OSU55
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2711 posts in 2957 days
#12 posted 03-14-2019 08:48 PM
Dane – I read that you hot glued the camera to the plywood. Has this held up over time, i.e. has the camera fallen off? I’m looking for options to mount my camera and this is easy but concerned about the glue letting go.
TheDane
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5912 posts in 4630 days
#13 posted 03-14-2019 10:02 PM
So far, so good … 4 years later and the camera is still fast to it’s mount.
-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"
Joe Lyddon
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#14 posted 03-16-2019 04:20 AM
This is a good idea… BUT what happens when you have to GET TO stuff in the back… like batteries (maybe they’re on the bottom)... I’ll have to check…
This is for a Dedicated Camera for making Videos, I presume… (??)
COOL idea…
-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: http://www.WoodworkStuff.net ... My Small Gallery: https://www.ncwoodworker.net/forums/index.php?media/albums/users/joe-lyddon.1389/
TheDane
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5912 posts in 4630 days
#15 posted 03-16-2019 11:37 AM
There aren’t any batteries … it is powered by a wall wart. The hollowing system is the only thing this camera is used for.
-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"
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