I posted something similar to this on the old forum, sadly lost forever in the ether.
My curved platforms require curved edging, based once again on the Ratio stone platforms. When I made the ones for Low Ghyll I had trouble bending and securing the sides to the core of the platform so this time I am casting the sides in resin which can be gently curved when it’s warmed in hot water.
I started off by building a box from Lego placed on a sheet of plastic (salvaged from the supermarket) and sealed with a bead of hot glue. The master copies of the sides were then stuck face up on the plastic with double sided tape and the whole lot sprayed with a release spray.
20210430_095041 by
Steve Mumford, on Flickr
I then mixed the RTV silicone and poured it in to the mould. I started with 200g then added a second pour of another 200g to fill the mould and give enough depth over the masters.
20210430_100551 by
Steve Mumford, on Flickr
I can’t remember if I ordered the fast (6 hours) or slow (24 hours) catalyst - either way demoulding will be tomorrow.
In between F1 on TV, I’ll be whittling away at the insulation board core for the hills and tunnels by the bridge.