where is a good place to purchase thin, clear epoxy for my RTM prototypes. preferably by the gallon but 5gal would be ok. in RTC and ETC. thanks
west systems is what i use…im sure there is a west systems marine store near you locally…just talk with them and see if they can cut you a break or get a dealer account like i did 
you need the slow hardener and 105 resin…they sell it in the 1 gallon or 5 gallon qty’s, buy the gallon with the pump system then when you need more go back and buy the 5 gallon…refil the smaller containers when you need …that way you can use the pump system with smaller quantity’s of reson per pump
northern fiberglass carries a nice selection of huntsman infusion resin, the 8601 is around 200 cps, and the 8604 is about 400 cps. give them a call, check there site: www.nfgsales.com . very good company to deal with
i really need a glossary, what is RTM? im trying to understand the lingo so i can learn.
thanks guys
PolymerProducts on ebay sells an infusion epoxy resin that is clear… runs about $70 part A and B combined = 1 gallon.
you also want to think about the properties you want these rotor blades to have… stiff, medium stiff, not as stiff. different epoxies.
Generally, you want helicopter blades to be as stiff as possible. I consult at a company that produces full size heli blades, and they’re using 130 plies of unidirectional.
Flex reduces efficiency.
excellent advice gentleman in regard to the mechanical properties. i certainly dont intend do overlook this aspect. luckily i beleive i have some breathing room understanding the loads involved. centrifigal force is my friend. you wouldnt believe what is out there now - foam cores with the density of a spunge (exaggerated) and 1 ply of 6oz plain weave
Low weight is crucial in RC heli blades, as it increases the response and provides more power to the main blades instead of using it for the rear rotor to counteract rotational force.
If a “sponge” density foam and 1 ply of carbon is stiff enough, then there’s no problem.