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Rotating monitor construction *Project finished*
DaOld Man:
--- Quote from: roninuta on October 29, 2007, 12:31:32 pm ---I have had good service from Mouser in the past ordering single parts. I have purchased batteries, leds, and other small parts.
From their site:
Minimum Order:
NO MINIMUM ORDER on items normally stocked in our warehouse.
also they have a shipping estimator tool:
http://www.mouser.com/estimateshipping/estship.aspx?sl=0
HTH
--- End quote ---
Thanks roninuta!
That looks like a pretty good supply house. I have it bookmarked for future purchases.
Project Update:
Still waiting on parts from digikey.
I have been considering how I am going to mount the 21" CRT.
After looking at the way Koz319 and Jimbo and others did theirs, Im thinking of using the round plywood or MDF.
Im thinking of cutting a circle out in 3/4" MDF, then mounting the monitor to that.
Whats the best way to cut a perfect circle (not sure of the diameter, guessing about 22 inches)?
Im thinking of attaching my router to a piece of wood (or metal), that will pivot on the center of the circle. Have a pin in a hole in the center, run the router around, lower the bit and go around again, repeat until through the wood. (Kinda like a compass).
This is my first time at something like this, so Im open for suggestions.
mountain:
A long time ago I had to cut a very large perfect circle. I used a piece if 1/4" MDF about 10" wide and a little bit longer than the radius that I was cutting. I used the little plastic bezel from the bottom of the router as a template to drill the holes on one end. I measured out to where the pivot needed to be and used a small wooden dowel to temporarily secure it to the wood I was about to cut. Worked great!
bfauska:
Question:
--- Quote from: DaOld Man on October 29, 2007, 09:29:39 pm ---Whats the best way to cut a perfect circle (not sure of the diameter, guessing about 22 inches)?
--- End quote ---
Answer:
--- Quote from: DaOld Man on October 29, 2007, 09:29:39 pm ---attaching my router to a piece of wood (or metal), that will pivot on the center of the circle. Have a pin in a hole in the center, run the router around, lower the bit and go around again, repeat until through the wood. (Kinda like a compass).
--- End quote ---
They also sell circle cutting attachments for routers, but I've done many a circle the way you and Mountain describe and with careful measurements from your pivot to the edge of the router bit you can get a dead on circle in a jiffy.
DaOld Man:
Thanks guys..
That jig from Rockler looks pretty neat. I guess the scrooge is coming out in me, I hate to pay that much. I think I will try the homemade one first.
(I may be wishing I went ahead and bought one.)
danny_galaga:
--- Quote from: DaOld Man on October 29, 2007, 09:20:10 pm ---
--- Quote from: danny_galaga on October 28, 2007, 06:29:01 am ---
--- Quote from: DaOld Man on October 26, 2007, 08:33:04 pm ---
Motor:
I had an old 12 volt DC motor in my junk box. I think it may be a windshield wiper motor.
--- End quote ---
that is definitely a windshield wiper motor. just be wary which wires you hook up as some of the terminals are for the auto-park function. many an apprentice has blown the contacts to pieces when hooking these up to a test bench ;D although i guess if you are just using the power supply there wont be enough current to cause any real damage...
--- End quote ---
Actually, the motor I have pictured is not a windshield wiper motor.
Im pretty sure it is a headlight motor. It only has two wires coming out, and it turns forever, change the polarity and it turns forever in the opposite direction.
--- End quote ---
ah, thats why the current draw was relatively low. i might just point out that windshield motors turn forever one way or the other too. the backwards/forwards motion you see at the wipers is mechanical. they apparently make good motors for barbeque spits (",)
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