Re: [CAD_CAM_EDM_DRO] Levelling large table

Doug,

If you were using T slot aluminum for the table top, I would have a good
solution. I sell for Machine Automation and I have seen what they have done
over the years.

When they use T slot table tops, they use double sided tape to attach a
strip of Sentra (PVC plastic) to the top. They then flycut the strips to
make everything flat.

My question to you is how are you going to attach your spoil boards? On my
small machine, I have attached a 1" thick piece of MDF on top of my aluminum
plate. I then used my flycutter to make the table flat. On top of that, I
use a spoilboard.

Bob Campbell

----- Original Message -----
From: Doug Harrison <prototype@...>
To: <CAD_CAM_EDM_DRO@egroups.com>
Sent: Friday, December 22, 2000 1:41 PM
Subject: [CAD_CAM_EDM_DRO] Levelling large table


> We are starting to draw up our router table and need a way to get the top
dead-nuts level. The plan is to use 60"X120"X.5" cast aluminum tool plate
for the table and a square tubing steel weldment for the base.
>
> Some ideas I've come up with:
> 1) Put a dam around the top rails of the base. Get the base fairly level
and pour low viscosity epoxy on the top beams. Pull the dams off after cure
and viola! - a perfectly level surface.
> Problem: Even low viscosity epoxy is not very runny. It might not flow
out level enough.
>
> 2) Put a mess of jacking screws in the top beams to level the table.
> Problem: Actually, a mess of problems. I don't have a collimator. Jack
screws are a pain. Jack screws don't transfer vibration well enough for the
base to absorb it.
>
> 2.5) I suppose I could use epoxy to cast the table in place after the
jack screws are set. I still need a collimator.
>
> 3) Just get the plate close and then flycut it flat with the router head.
This is the method used by Multi-Cam and some other manufacturers, but they
use phenolic for the table.
> Problem: Seems a waste to buy tool plate and then whack off that nice
ground surface with a relatively cheap spindle.
>
> Any router table experts care to comment?
>
> Doug Harrison
>
>
> [Non-text portions of this message have been removed]
>
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