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bigscreen wrote:I m following with wondering eyes your progress at this cool project some time now, and I can't resist to give a small hint or suggestion to become a better result in the picture.
The drawing will make it clear what I mean (think so)....
Go for it !
Wonderfull job so far ! Congratulations!
Patrick.
bigscreen wrote:Great job so far, okay,......
I m not sure with the speed 1500/min, if this is correct, and if it is correct that the smal drum has to spin slower 4 times, but even if this is not what I tought, it don't matters with what I m trying to explane in my drawing now, but I tought that this is a correct way to have a good solide connection with the two drums,....
The signal from the cd could be used to get the sync holding the big drum in syncronisation, and the big drum could make the signal for the small drum wich I believe will spin in sync with the synced speed of the big one.
Just a tought of how I would try it out ofcourse.......
holtzman wrote:Hi there and welcome back Patrick!
I must make some correction for you Harry. I never told there are 12 lines in my large drum. The math here is very simple and don't waste your time for just experimenting with things which are wrong because of some misunderstanding...
So regarding the lines' numbers, I have: 16 lines on the large drum, and 6 on the small one. Because my speed is doubled, I need half of the normal amount of 32 lines.
Regarding how to blacken the intervals between the lines: I do believe that even in Australia the electric isolation tape is the same PVC roll 3/4" wide. If you use black color type, it's completely opaque and I even used it to form lines not just to blacken the intervals.
Best luck!
bigscreen wrote:Hi there Harry, and hello again Holtzman.....
It gives indeed a much better and bigger picture this way, and less harder to create this monitor than suffering with making a heavy mirrorscrew.
I wonder if there are no substitutes to create a mirrorscrew in one part, something like a plastic molded mirrorscrew, which could been silvered with those smal silvertape they use in some isolation-technics.
A moulded mirrorscrew, who has not to been adjusted anymore, and it would no longer need a big motor to drive it.
I think that the cost's to manufacturing some nbtv disc's are not much cheaper than make a mould and use some flowing epoxy...?
Just some idea's from me......and there is always time for a smile to....
holtzman wrote:Oh, thanks for your superlative reviews A friend of mine told me already that it's cute that I improved something that had already died in the past, and was surprised how I admire the past and love things gone with the progress.
Mirror screws are still more compact and light efficient. But unfortunately they can not be moulded for many reasons. They can not be made using modern laser-modelling techniques, too. Each way of reproduction either affects mirror quality, or the whole thing's geometric accuracy.
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