Waxed or Unwaxed Polyester Resins

[jusfloatin]

Can someone explain the difference between the two?


(General Purpose Resin
An orthophthalic general purpose polyester laminating resin which exhibits a moderate exotherm temperature and cure to allow for thicker laminate applications.
Available in Waxed IP-150 or Unwaxed - IP140 Sizes 1 litre, 4 litre, 5 gal)

 

[ondarvr]

Re: Waxed or Unwaxed Polyester Resins

Adding wax allows the surface to cure tack free, which means that if you need to add any further glass or other coating to the surface you need to sand and clean it thoroughly to removes all traces of the wax. Without wax you can put down another layer with little or no prep work. NEVER buy waxed resin.

 

[steve riddell]

Re: Waxed or Unwaxed Polyester Resins

Always unwaxed!! Waxed is good for a Corvette!!

 

[SC's Forever!]

Re: Waxed or Unwaxed Polyester Resins

Rather than identifying them as "Waxed" or "Unwaxed".....Lets use "Laminating"(Un-waxed" and Finish(Waxed) resins......Which tells you exactly what their intended purposes is......Laminating resin is used whenever you intend to add another layer (or more) of glass to your lay-up....It remains "tacky" for better adhesion the next layer (or Lamination)......Your last or "finish coat" should be the "waxed" or Finishing resin which will cure hard and can be sanded smooth in preparation for paint or whatever AFTER you remove the waxy surface of the cured resin......
Just a little FYI, epoxy resins are usually regarded as best for laminating because of their superior strength and bonding properties and are less brittle than Polyester types thou Epoxy is somewhat more expensive than Poly.......epoxy types will adhere to either epoxy or poly, but poly will not stick to epoxy!!!

 

[jusfloatin]

Re: Waxed or Unwaxed Polyester Resins

I thank you all.

Have a great day