I couldn't find such a filler on their website but might have missed it. Do they sell one?. If not what filler is used for this purpose with their epoxy resins?
trojanfibreglass.com.au/
Great thanks, my bad, of course you are totally correct. I should have put "glueing filler" in when searching the site.
trojanfibreglass.com.au/product/fumed-silica/
Select to expand quoter13 said..
Great thanks, my bad, of course you are totally correct. I should have put "glueing filler" in when searching the site.
trojanfibreglass.com.au/product/fumed-silica/
Fumed silica sets very very very hard. No good if you need to do any fairing or sanding. You can go and use any west systems or other powdered additive.
When gluing I use silica, when fairing I use microballoons. Both can be bought in very large (50 litre or more) packs for about $150. I buy a new pack every few years. I stay away from WEST - my wallet and WEST stuff are mutually exclusive. If someone else is paying then WEST fairing compound (Microlight) is great.
I sometimes add a little microballoons to a large cove when gluing as it spreads better, but it is lower strength. The only time I glue with microballoons is when I am gluing cedar strips or foam together - it has more strength than cross grain cedar or any foam.
This for fairing - I am out to use some and make some filler right after I write this for my little 7.3metre cat - fine stuff to use but it does fluff up a bit - wear a mask - always wear a mask (but especially with the silica!)
trojanfibreglass.com.au/product/q-cel-hollow-microspheres/
The real hard to sand / fair are milled glass or milled cotton, best for bigger gapes & strong glue, I've found that to fair a large cove made with the above milled fillers it's very easy to lightly brush some neat epoxy mix over the cove and get a nice smooth finish, and while your at it, and if you want to lay some tape in nows a good time, just a little caution as you press the tape into the wet cove, the neat mix makes the part set blend wetter.
On large coves I tend to wait until the cove is rubbery, or I mush the nice radius cove up laying on the glass. Or wait till all is cured and give it a quick sand.
I buy this stuff by the bucket off eBay along with Q cells and micro balloons.
www.ebay.com.au/itm/131022059016?hash=item1e8185f608:g:ezMAAOSwG-1Wuoj6
Works fine with Trojan resin or Platinum resin. If you want something harder than silica filler than use crushed granite.
Kankama, I was struggling with a term to describe partly set epoxy"rubbery " nails it ! Cheers. I'm impressed with the way a rubbery/ toffee type fumed silica can be latently manipulated, the 1st time I worked with it ( as opposed to milled fibre ) was a tape and glue dingy, the ply i was using was a bit stiffer than suggesting maybe, so as the glue was at the toffee/ rubbery stage the tape started to let go, imagine a slow explosion and a sagging epoxy mess. Anyway the job was adapted to a stitch and glue on the run, the rubbery cabosil mended back into place beautifully. That night was also the 1st time I ran glass tape into " rubbery " epoxy. Ps the list I posted doesn't mention wood flour I'm sure it was a staple in the early days, anyway I've collected some merbu dust from the orbital sander to use for epoxy colour bog
Yes you missed it
