Re: [CAD_CAM_EDM_DRO] Re: Ball screw cost and sources - Moglice - Phillycast - concrete

Hi Marv;

Thanks for the info.

Is the monofilament polypropylene commonly available? Kinda sounds
like fishing line to me, given that I could see where it would make an
excelent reinforcer.

Not to push the subject to much but are the finishing methods you allude
to feasable for somebody who is tooling challenged. That is my shop
may not be as well equipped as those of some of the other memebers of
the list. Ideally I'm looking for something that I can fabricate and
get flat over a couple of square feet to within a couple of thousands.

If the either fabrication method (concrete or a doit yourself
Phillycast) is to unreliable for the average home shop user then I can
go back to searching for used mills to prototype on. On the surface
either one of these methods looks like an ideal method for simple
machine framing.

Thanks
dave


dcdziner wrote:

>Dave,
> Let's try a slightly different scenario. Rather than filling the
>center void with wood, I would use styrofoam, and use it in rectangles to
>divide the underside into cells. You'll then have structural members
>supporting the underside of the top slab in both directions, and require a
>thinner top section. In addition, you should add fibers of monofilament
>polypropylene to the concrete mixture. This is the newest method of
>reinforcing concrete, that's replaced steel mesh. When you get a little
>closer to pouring concrete, I'll give you instructions on how to finish the
>slab so it's really flat.
> In the past 20 years, I have placed several million square feet of
>"superflat" warehouse floor, so a router table should not be a problem.
>
>Marv Frankel
>Los Angeles
>
>----- Original Message -----
>From: "turbulatordude" <davemucha@...>
>To: <CAD_CAM_EDM_DRO@yahoogroups.com>
>Sent: Monday, May 26, 2003 5:21 PM
>Subject: [CAD_CAM_EDM_DRO] Re: Ball screw cost and sources - Moglice -
>Phillycast - concrete
>
>
>
>
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