PREPARING THE MOLD

Models are made in a wide range of materials whose surface conditions and porosity differ. Even though RHODORSIL RTV2's do not adhere to most materials, it is usual to take certain precautions before taking impressions. Various possibilities are offered below which are tested in laboratories.

Remove dust and apply a pore filler from among the following:Polyvinyl alchol type 4/125 diluted Soap, dissolve 250g of glycerine soap in one liter of boiling water; use once cool
Wax or parafin deposit (diluted to 5% in xylene)
Vaseline deposit
Varnishing; gum lacquer or cellulose or acrylic varnish

Degreasing with a solvent or washing with a water based solution made with 5% liquid detergent, then drying
Wax

Apply a very thin coat of vaseline

Apply a very thin coat of vaseline
Wax

Apply vaseline or wax, a cellulose pore filler or cellulose varnish

Degrease with appropriate solvent for the plastic concerned

Apply a very thin coat of vaseline
Wax

Apply polyvinyl alcohol then a very thin coat of vaseline
Wax

No treatment required

INTRODUCTION

RTV2 APPLICATIONS

MOULDING TECHNIQUES

PREPARING THE MODEL

ADVICE TO USERS