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Hi Vips,
OK, I'll be interested to hear how you get on.If the specific shape of your mould (and the temperature you work at) meansthat you still struggle to keep the gel on the vertical sides of the mould thenyou could look at adding colloidal silica to the gel, effectively making iteven thicker and reducing its propensity to 'flow' slowly. If you do add silicaalways remember to add a small amount at a time and agitate the mix thoroughly,then leave for a while, then agitate again. This will develop the full thickeningproperties of the silica.
I hope this helps, Matt
Matt Statham Easy Composites / Carbon Mods - Technical Sales
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