West 407 with MAS Resin and Hardener

Is it OK to use this with my MAS product? 

6 replies:

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RE: West 407 with MAS Resin and Hardener

Jeff,

 Your can use West System (105+407) over your already cured MAS epoxy but you absolutely can not mix the two brands. They have different chemical formulations and different mixing ratios.  

RE: West 407 with MAS Resin and Hardener

Oh rats!  I'll have to return it.  I was hoping I could use the West 407 micro balloons with my MAS.  My local West Marine does not keep MAS on the shelf. 

RE: West 407 with MAS Resin and Hardener

To clarify:  I'm using MAS resin and hardener.  I want to know if I can use West 407 microballoon filler.  It seems to me that it would be OK since that is just a filler/fairing compound, but I want to be sure. 

RE: West 407 with MAS Resin and Hardener

You are good to go!  You can mix the fillers all you want.  You can't mix an epoxy resin from one manufacturer with the hardener from a different manufacturer, unless you have an advanced degree in chemical engineering.

RE: West 407 with MAS Resin and Hardener

That is what I was hoping to hear.  It made sense to me, but I had to verify.  Thanks!

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