Looks good George. I'll have a look around LA and see if we can

get it

cast

in magnesium as 5 mm .196 inches wall will be a bit heavy in

aluminum.

Paul Lamar


That may be a tough mold to pull due to its shape. It is amazing

how

much

force a couple of square feet can have when attached with wax

and PVA.

Are

you planning on using a water-pressure release fitting in a

non-critical

area (such as the center that will be cut out)?

Scott Gettings

Scott,
Your so right there Scott, I had a hell of a problem getting the

last one

off - had to cut out the mock-up. As it was only made of plaster it

wasn't a

problem, this one is timber.

I will use your timely suggestion mate- will household water

pressure do the

job?
George (down under)

George,

As long as you have a coat of PVA on the plug, the water should dissolve

it enough to get a release with minimal pressure.  So you should be fine
with

municipal pressure.  As long as you have the fitting(s) in place, you

can always add more pressure if needed.  Large or complex molds (e.g. boat
hulls) often

use numerous fittings.

Scott Gettings

George Lendich wrote:

Thanks Scott and others!!

Paul,
 I have asked about Magnesium but am not getting anywhere locally - but will
keep trying.
George (down under)

 
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