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Rotating monitor construction *Project finished*
csa3d:
Ahh, yes.. rain as an excuse! :laugh2: Are you planning to still find tiny wheels to suppliment the skate bearing? Your rig has me wondering, if one couldn't route a shallow groove into the side of a disk, then use bolts and bearings ONLY to keep the whole thing balanced, using the bolt as the axis, and the bearings as a guide. Curious to see how this thing ends up fitting onto the rotation rig. Hopefully, a rain dance will keep the moister away tomorrow ;)
-csa
DaOld Man:
:laugh2:
Right, right..
I am planning to use just the bearings, But Ive run into two problems.
The bearing shafts are going to be very close to the edge of the wood, due to the 1/4" slot between the disc and the monitor board.
And the bearing I.D. looks like it might be metric. A 5/16" bolt has too much play, and a 3/8" bolt doesnt fit.
So I got to take the bearing into work tomorrow night and try some metric bolts to get the right size, then I got to see if I can find some metric all-thread. I dont want to have to machine a piece, but I may have to, if i use these bearings.
Im not sure I understand what you are talking about with the grove and bolt? Are you talking about my circle cutting rig?
I will talk to my ancestors, see if they can do that rain dance.. :)
csa3d:
--- Quote from: DaOld Man on March 28, 2008, 12:04:17 am ---Im not sure I understand what you are talking about with the grove and bolt? Are you talking about my circle cutting rig?
--- End quote ---
one the side edge of the wooden disk you just cut out, I'm proposing taking a router, and cutting into the side of the disk, create a channel the depth of the bearing. If you're mounting your monitor in an upright position, you could then take some bolts and a bearing, and place one on either bottom side of the disk mount at 4:30 and 7:30 on a clock. These bearings mounts would fit into the side grove you cut out, like a train track, keeping the weight off the bottom of the spinning disk and main bearing, while also preventing side to side play.
Make sense? Awesome ansi art to follow..
____
/ \
| disk |
o\_____/o
the O's are the side bearings I speak of, holding up the weight of the main disk, slightly embedded into a routed out side channel.
-csa
DaOld Man:
Well, I have something like that planned. But since Im using a pretty heavy CRT, I dont know about the slot. It may weaken the wood.
But I picture is worth a hundred words, so as soon as I get it laid out I will post some pics.
Those bearings I bought are giving me fits. The ID is slightly larger than a 8 mm bolt.
I checked a hardware store, and they didnt have any 9mm bolts, and 10 mm is way to big.
I checked at work and we have 8 and 10, no 9.
Whats up with that??
Anyway, does anyone have specs on these bearings? I cant seem to find the ID anywhere on the net.
I sure hope I dont have to make something on the old lathe. I was hoping to keep this project "parts you can get at the store".
On a different note.
I am thinking of putting something on the edge of the MDF disk to make it harder, so maybe it will wear longer.
(It will be running against the bearings.)
I really dont know what it will be, maybe elmers wood glue?
Something that would soak into the MDF and harden.
Hmmmm
Franco B:
Awesome work :applaud:
Some quality projects on the go at the moment :)
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