jbarnes85 said..
Product: Epoxy filler
Supplier: trojanfibreglass.com.au/product/fumed-silica/
Price: $9 for 250g which is a large amount/volume, perhaps 5L or so.
Comments: I believe this is similar or the same as West Systems 406 Colloidal Silica or Cabosil. It is a very very hard and strong filler, sanding is very very difficult. I have used it for medium transom repairs, minor deck repairs and a few other minor jobs. It is very hard so its best to avoid the need to sand it afterwards. I used an electric file (like a mini belt sander) to sculpt the shape afterwards which works well.
Aerosil is just the brand name for fumed silica, the same place also sells cabosil which is just a different brand of the same stuff. Bote Cote and West systems are just boutique epoxy suppliers that buy in bulk and sell the same stuff in small packets for a heavy mark up. The local epoxy mixer here is probably supplying other suppliers under different labels. Just before Christmas, I had to buy epoxy in small containers {for the same price] because they had a shipment leaving and did not want to decant some just for me, they just wanted to close up for Christmas. At the same time, I was trying to buy some cloth from trojan but it took several days for them to answer an email!
Diy-composite- supplies on eBay, however, are very competitive on price and surprisingly fast delivery.