Next project, larger 32 line NBTV 40cm Nipkow disc televisor
Posted: Fri May 04, 2012 11:39 pm
G'day all.
I am already now gotten started on my next mechanical televisor project which is of course a larger version of my very first televisor, about twice the size! I am going to make a 40cm (16 inch) 32 line NBTV standard Nipkow disc televisor. Looking for what I could find available to make the disc, I found a sheet of plywood that is roughly 4mm thick which I am going to try to make a Nipkow disc out. However two problem factors come to mind, first one is it weighs probably something over 500g so I need a bigger badder motor, second it being plywood when cutting It may possibly split and peel. But will give it a shot anyhow, so far I have drawn the disc on the wood and have marked the holes. I used my brother's big 16" drum cymbal to draw the circle as I didn't have a big bad protractor and to mark the holes I printed the NBTV 32 line Nipkow disc template at 40cm to 4 pieces of paper and sticky taped them to the wood as precisely as possible and punched the holes with a tool that looks like a screwdriver but has a nail like pointy end (what is it called???) pressing through the white holes on the template into the wood. Anyhow will do the cutting, drilling and sanding tomorrow and see how it turns out. In the meantime here's some pics I've taken showing the process I just described in marking the disc.
I am already now gotten started on my next mechanical televisor project which is of course a larger version of my very first televisor, about twice the size! I am going to make a 40cm (16 inch) 32 line NBTV standard Nipkow disc televisor. Looking for what I could find available to make the disc, I found a sheet of plywood that is roughly 4mm thick which I am going to try to make a Nipkow disc out. However two problem factors come to mind, first one is it weighs probably something over 500g so I need a bigger badder motor, second it being plywood when cutting It may possibly split and peel. But will give it a shot anyhow, so far I have drawn the disc on the wood and have marked the holes. I used my brother's big 16" drum cymbal to draw the circle as I didn't have a big bad protractor and to mark the holes I printed the NBTV 32 line Nipkow disc template at 40cm to 4 pieces of paper and sticky taped them to the wood as precisely as possible and punched the holes with a tool that looks like a screwdriver but has a nail like pointy end (what is it called???) pressing through the white holes on the template into the wood. Anyhow will do the cutting, drilling and sanding tomorrow and see how it turns out. In the meantime here's some pics I've taken showing the process I just described in marking the disc.