Originally Posted by
peteeng
Hi BT - So you did a tonne of research settled on a product then used something different? then didn't tell us what you used? Most epoxies in this application are medium weight pure epoxies. Nothing really special about them. Some have additives to improve hardness such as ceramic fillers (sand, quartz etc). The chockfast orange in its SDS does not mention fillers yet it mentions its self extinguishing. This means it has ATH added maybe (aluminium trihydride). But not much as it won't pour if a lot is added. 40 barcol is pretty much standard for laminating resins (epoxy, vinyl esters and polyesters) Precision Epoxy don't publish their TDS or SDS so can't comment on their epoxies but their pours are impressive. I've been looking at making surface plates using epoxy but have not been able to find out how accurate they are compared to granite or if they are poured and stilled scraped & polished. The trick with thick pours is to get the hardener right. Too active means too fast and the surface crawls as you get hot spots. Too inactive and the epoxy won't go off!! It looses too much heat to its surroundings so just sits there and goes mushy... Cheers Peter