File puptcrit/puptcrit.0505, message 192


From: "Kismet" <kismet-AT-bigpond.net.au>
To: <puptcrit-driftline.org-AT-lists.driftline.org>
Date: Thu, 12 May 2005 08:06:15 +1000
Subject: [Puptcrit] Styrofoam


Thanks Fred,
Starting to understand...I think we are talking about the same stuff....It is very similar to the florists foam used for making wreaths etc. Boat builders use it in liquid form to pour into cavities so that it expands and forms a floatation bouy in the bow etc.Surfboard builders by it in large blank rectangles to shape a board out of and then cover with fibreglass, Builders and plumbers and that use it from a pressure pack to fill cavities, gaps in walls. (Papier Mache puppets formed over a clay plug can be backfilled with this to re-enforce it.) The big difference is that it is a polyurethane foaming resin because styrene dissolves when in contact with fibreglass.
as to the weight issue the fibre glass head, not designed for a marrionette, described previously weighed in at 10oz completed.....the foam alone wouldn't register on my scales...thats a head that is 7" by 7" not following the contours...you know, flat...... A Punch head made using similar principles...ie a blank head was made from a mould then detailed with apoxie sculpt measuring 5" x 6" x 6" deep
weighs in at 6oz......advantages? you can counterweight the head to compensate for extrenuos features, no need for dowels for control lines, resilience plus and superior modelling. Forming it over a carved foam plug and detailing with Apoxie Sculpt would weigh no more. If YOU DO make a silicon mold you can then cast in a VERY USER FRIENDLY polymer marketed as "Easy Cast" From start to demold takes 30 minutes, great stuff.

Thanks for some great ideas Fred.

Daniel
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