Re: Engraving Bricks

Ron,
Autoclaved Aerated Concrete blocks/bricks are readily carved with low
cost bits. There are several makers of these bricks/blocks under the
Hebel patents.

They are so responsive to carbide endmills, you will be able to
engrave as deeply as you wish. So deeply, it would be a snack to paint
enhance the engraving with a syringe, after vacuuming out the dust.

If this is an outdoor wall, the Hebel people specify an acrylic sealer
which is normally rolled onto the finished wall. Shouldn't upset the
paint fill.

Mark
Fourth Axis
http://fourth-axis.com

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Ron Ginger <ronginger@...> wrote:
>
> I am working on a fund raising project for the Boothbay Railway
Village.
> We are looking at a brick walk, where people make a donation and get
> their name engraved in a brick.
>
> Ive found a couple sites on the web that do this, for $20 per brick.
> Most seem to sandblast them, but one site claims to be 'real engraved'
> with special machines.
>
> Id guess a diamond bit in a router on a simple CNC table ought to do
the
> job. I think Id make the machine a disposable- maybe a wood or mdf
> structure. If I got 100 to 200 bricks out of it before it died I would
> be ahead of the $20 per brick. I only need a working area of one
brick- 4x8"
>
> Has anyone tried this? Any suggestions for a source of bits?
>
> ron ginger
>