In a message dated 9/16/96 12:32:33PM, Dave Howard writes:
> Resin Pumps - I think I'll 'invest' though I'm a little concerned
> about the accuracy of them. I accept there is a risk with them
> delivering duff mixes, but is this actually a problem in reality
> and is it any worse than using a couple of cups and scales? Also
> on the same topic, my kit came with two types of hardner, how does
> the pump cope with this ?
We have used a resin pump throughout our Europa project ( spanning last 2+
years),and can thoroughly reccommend it. Provided you callibrate the pump at
day one and check it every now and again you should have no problems. We used
the one from Aircraft & Spruce (UK) and they usually have a stock of Europa
compatible pumps. The only thing is that as it is a volumetric delivery
system its best to keep things at a fairly constant temperature (somewhere
near 20 degrees C). Unfortunately you will need to opt for one type of
hardener or the other ( I presume you have normal and slow type) although the
hardeners can be mixed. Perhaps the slow hardener could be jugged into the
hardener dispenser when you are doing the larger layups like the wings but we
got by with standard hardener throughout even in the Summer of 94 when it got
up to 29 degrees and the resin was going off as we were using it.
As to safety equipment 3M make an excellent carbon filter mask as used by
professional spray painters. Available at all good Auto Paint suppliers !
Happy building
Carl Pattinson
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