Table design

[The_Stranger]

I put a piece of carpeting below (shag up) and a piece on top (shag down). This not only insures no splinter or edges rub into the tube causing a leak, but allows it to breath. I never worried about having the valves accessable but it would be a good idea. My table used 6 tubes and they were all acccessable from one of the sides. If you do the hole in the center of the tube for the valve, that should be good enough to release the pressure on the inside of the ring.

My table design
http://www.sketchys.com/holograms3d/The ... eTubes.JPG

The thread
http://www.sketchys.com/holograms3d/The ... NewLab.htm

Ah, nice photos, it makes it clear what you mean. (By the way, I tried your link in your signature a couple of weeks ago(www.sketchys.com/forum) but that one does not work.)

But I can't see how you managed to do the inflating/pressure, if they (valves) are not accesible? Do you lift the plate to (re)fill them? I do not see me doing that with my 200lbs stone slab.. I will use the carpet anyway, so i fI can do without drilling holes, that would make it a bit more structurally safe and it makes for less hassle if the final table needs to be rearranged (and I wouldn't be able to use those holes again)

And that plateholder, is that the one mentioned and drawn in the holowiki? For some reason it is less complicated then the drawing made me think, but now it looks practicable without useless complication.

[Joe Farina]

If a ball gets flat you wil have to replace it anyway.

Raquetballs don't lose air or get flat because they are pressureless!

[The_Stranger]

i have found these machine stablisers to work well, i sold a smaller set to justin and he seem to like them...
ive had mine for more than a year, and have not needed to add any air.

http://www.barrycontrols.com/defenseand ... lation.pdf

here is made a quick video made last year about the system.

http://www.youtube.com/watch?v=oOON69bvhG8

I think new ones are kind of expensive, however, I do see some on ebay (wouldn't know where to get them secondhand elsewhere, do not have contacts in the broken and discarded-machinery-world)
Worth considering, I think.

[JohnFP]

Raquetballs don't lose air or get flat because they are pressureless!

Does that hold true when they are under the stress of 100lbs or so? I would think at that point they are under pressure.

[Joe Farina]

Does that hold true when they are under the stress of 100lbs or so?

Yes it does! My raquetballs have been supporting my granite and steel table for years.