Old Handprint in Cement

Hello. I am a new poster to this board.

When I was very small, my mom pressed my hand into some cement that
was poured in our driveway. It has been some 30 years since (it's so
cute!). Anyway, I would like to pour plaster or something into the
handprint, allow it to dry, and voila, my little hand will be
portable. I assume I need to line the print with something so the
plaster will pop out. Any ideas on how I can accomplish this? Many
thanks for suggestions.

Marcy

(Marcy) writes:
Hello. I am a new poster to this board.
Hi marcy!

my mom pressed my hand into some cement that was poured in our driveway.
[...]
I assume I need to line the print with something so the plaster will
pop out. Any ideas on how I can accomplish this?

If I were doing this, i'd try wax or perhaps shellac.
Need to be careful of any undercuts in the print that will hold the
plaster pour in place.

If there are undercuts, you could try silicone, which should flex well
enough to remove...




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Spray the cement with WD40 or even Vaseoline. Pour in the plaster, let
dry and remove.

Andy
http://www.neoglassic.com

(Marcy) wrote in message . com...
Hello. I am a new poster to this board.

When I was very small, my mom pressed my hand into some cement that
was poured in our driveway. It has been some 30 years since (it's so
cute!). Anyway, I would like to pour plaster or something into the
handprint, allow it to dry, and voila, my little hand will be
portable. I assume I need to line the print with something so the
plaster will pop out. Any ideas on how I can accomplish this? Many
thanks for suggestions.

Marcy

In article ,
says...

Spray the cement with WD40 or even Vaseoline. Pour in the plaster, let
dry and remove.

I agree with the vaseline but doubt that WD40
will do the job since it's not oily enough.
WD40 is mistakenly thought of as a lubricant
by some people when it isn't even a very good
solvent, but it is a good anti-wetting agent.
If a spray application is needed, I think I'd
use a non-stick cooking oil in a spray can.

Hi Marcy

I make casts of several things!

What works the best for me is using a polyester resin to get the image
and then using that as the mold to make plaster castings. Polyester
resin remains somewhat flexible allowing you to remove it from
undercuts and then it hardens to rigid.

On things we need to maintain the undercuts and still get the mold
off, we use vinyl or rubber to make the initial mold.

If you don't have a good mold release formula at your fingertips,
silicone spray, vaseline or soft wax can be substituted.

TTUL
Gary

WD40 is plenty oily for something like this. I know, I've done it before.

Andy
http://www.neoglassic.com

(Lew Fah) wrote in message ...
In article ,
says...

Spray the cement with WD40 or even Vaseoline. Pour in the plaster, let
dry and remove.

I agree with the vaseline but doubt that WD40
will do the job since it's not oily enough.
WD40 is mistakenly thought of as a lubricant
by some people when it isn't even a very good
solvent, but it is a good anti-wetting agent.
If a spray application is needed, I think I'd
use a non-stick cooking oil in a spray can.

Thanks for all the suggestions everyone. It has been rainy so I
haven't had a chance to try it yet.