Whats that one thing called?

I'm hoping it has a name.
Its the articulated ball joints that can be found in, for example,
"Helping Hands" that are often sold in hobby stores or electronics
stores.
Also would a scaled up version work to hold something perhaps in the 7
lbs range.
I'm thinking of using something like that in a ceiling projector mount
I'm designing for my new home theater.
Reply to
marc.britten
Loading thread data ...
I know what you're talking about. Maybe you could try the articulated holders used for dial indicators. Those have a series of balls and sockets, which are tightened by a lever/cam that connects to a steel cable that runs down the center. They work pretty well. ww88
Reply to
woodworker88
i was hoping someone would post some locking ball joints other than these....
formatting link
i think these are expensive and was hoping someone would post a link to some that were less expensive.
(you've got to scroll (way) down to get to the ball joints, i THINK they might be able to hold 7 or 8 pounds, MAYBE.) not sure if this is what you mean though. i bet they have the specs there SOMEWHERE.
formatting link

Reply to
William Wixon
Something like that should work, just a ball mounted on a rod held in whatever position you want then torque down on the outside to hold it basically.
I figure two joints one near the top to help set height and one near the projector to help set the angle. Fudging with the 2 should get me a good setup with out lots of measurements to get the ideal setup for the exact layout I have now (which could change, you never know).
Good projector mounts run like $200. I'd hope to get this done for under $100.
Reply to
marc.britten
On a research project at U.C., we needed a full length mirror mounted at an angle to help us observe a target. Problem was solved by using a pair of ball hitches.
Reply to
Leo Lichtman
Work positioner maybe?
formatting link
Reply to
tomcas
I have a few Pana Vise mounts that I scrounged at the dump. I think most of them had been used for car phone mounts (before phones became so small):
formatting link
They are quite sturdy and would easily hold 7#. I'll sell them for $10 ea, plus postage. Mix & match socket screw or thumb screw. Contact me privately.
Bob
Reply to
Bob Engelhardt
What's that Lassie? You say that snipped-for-privacy@gmail.com fell down the old rec.crafts.metalworking mine and will die if we don't mount a rescue by 19 Mar 2007 16:00:06 -0700:
I've seen what you are looking for in a catalog at work. This is the companies URL:
formatting link
under "mounts"
Dan H.
Reply to
dan
Four clamp collars and a little time will do it.
formatting link
The last pic shows how I slot the collars to be self-fixturing for welding. The collars in the photos are 1/2", probably smaller than you need. I've used as large as 1-1/4" for heavy items.
Ned Simmons
Reply to
Ned Simmons
Maybe a Panavise would work, check out the available attachments.
Reply to
bob

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.