Originally posted by BroMikey
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Originally posted by BroMikey
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Glue some foil on a toilet paper roll. Incomplete info as usual. AFTer I build it you will simply say "not like that"[/QUOTE]
Did I say toilet paper roll?
No. I CLEARLY said a piece of 4" or 6" diameter PVC pipe with END CAPS. Last time I used 6" PVC pipe and I have both 6" and 4" but this time I am building with 4" diameter because the end caps for the 6" pipe are ridiculous in price now.
I CLEARLY said drill a hole in the center of both end caps to put a shaft through and attach the cap to both the shaft and the pipe. This couldn't be more simple.
Originally posted by BroMikey
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You can drill a hole through the center of both end caps to put a piece of all thread through to act as a shaft. That is what I did. Then I put a nut on both sides of ONE of the end caps and tightened it up with all-thread on the threads BEFORE I glued that cap onto the pipe. I made SURE I had enough all thread sticking out to go all the way through the pipe and out the cap on the other side. Now when I turned the all thread, the whole pipe turned. The other end cap I did NOT glue on to give me access to the wires. This time I may just glue the PVC on a shaft. WHY? because all-thread does not fit tightly in my bearings. I use skate board bearings, and you can find shafts that will fit them at Lowes or Home depot. The caps can just be GLUED onto the shaft because there is no torque or resistance (to speak of) that would break the cap free of the shaft once they are glued together.
I CLEARLY said the wires would all be INSIDE the pipe. How you attach the strips on the outside is up to you. I simply glue them on with epoxy. BUT, between the pieces of copper I glue little pieces of plastic that are the SAME HEIGHT as my copper. What I actually did is cut my pieces of copper about 3/4" longer than I wanted them, then bend 3/8 at each end at a 90 degree angle. I drilled a small hole in this bent piece to put my wire into and solder it in place. I drilled holes in the EXACT place that I want the copper to go and the bent end with the wire soldered on ends fit into the holes and is epoxied in place. I drill both holes just a bit bigger than the copper because I want to be able to adjust it so that all the pieces align, and so that the wire will feed in easily.
With transistors, you have to make sure that the ones on each side turn on at EXACTLY the same time, which is why you need optocouplers. With this setup that is not critical. I can put the glue on one end of the copper that is going into the hole, then put my square across the pipe and push the pieces of copper against the square. I glue one end in place (the end with the wire) and let it dry before doing anything else. They make a super glue that is more like a gel than a liquid, and that is what I used so it would fill in the hole around the copper. without dripping inside the tube too much. That's as detailed as I am going to get. Probably NOBODY will use the same size copper as I use, so every build will be different.
Here is the copper I am using: https://www.amazon.com/dp/B00HHCT46A...roduct_details
It's a little more than 1/8 of an inch wide. That means I really only need enough PVC pipe to hold the two end caps, because when you push them together, you have enough length to put 12 of the 1/8 inch strips with space between them. This is NOT the copper I used last time, but I have no more of that. It was 1/2" wide strip, but this will make contact too. That's all I need.
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