Steade wrote:
> I have used some Ampreg 21 for the filling and surfacing jobs on my
> Tri Gear. I am not very impressed.
>
> Already after 7 months shelf life I had the crystalisation problem and
> had to heat the resin as advised by Gurit (UK). Also the resin despite
> post curing goes not seem to harden as well as Ampreg 20 and this
> affects its ability to sand easily.
>
> I did mix the resin accurately and this problem was consistent. over
> several mixes. What its like for structural use I don't know.
>
> I would be interested in anyone else's experience with this product.
>
> I must say that for the filling I'm tempted to use West Systems 105
> which I understand is OK for this purpose.
I can think of relative humidity and storage temperature as variables to
which Ampreg 21 may be more sensitive than Ampreg 20.
I have no experience with it.
After trial and error I now use SP106 for surface work (mixes as 1 to
0.18 by weight). Hardens and sands much better than Ampreg 20.
Regards,
Jan de Jong
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