Guys, it is a real bitch to try sanding the surface of a layup that has cured with any kind of smooth plastic (mylar) over it. The sand paper tends to just skid over it without biting into it. I might have mentioned this before but it is worth mentioning again: To do a layup with very little sanding afterwards, after doing the layup, pour a liberal amount of micro powder onto the surface and then gently rub it in with your hands using very light pressure. Obviously use gloves. If your hands drag on the wet surface, you have too little micro covering it. Do this untill the micro forms a smooth film over the surface and leave to cure. Once cured it is a matter of running a sanding block over the micro which quickly works down to a smooth surface which needs very little finishing. Regards Dene Collett KR2SRT builder South africa Whisper assembler See: www.whisperaircraft.com mailto: av...@telkomsa.net ----- Original Message ----- From: "Colin Rainey" <brokerpilot9...@earthlink.net> To: <kr...@mylist.net> Sent: Thursday, January 05, 2006 18:32 Subject: KR> Fiberglass layups
> Serge > One other way of performing layups I have not seen anyone mention yet is that you can use Deck Cloth as the final layer, without adding any additional epoxy to the layup. The Deck Cloth is such a fine weave that only sanding enough to allow the primer and paint is required to finsh it. Also unlike peel ply, the Deck Cloth does add a small amount of additional strength to the layup, where as peel ply just removes the extra epoxy. If weight is not a concern in an area, or strength is, then the deck cloth is less likely to starve the layers below, since it is going to bound and remain permanent. > > It also works great for creating smooth surfaces when using cotton flox to fill an area, and apply the deck cloth on the filled portion, again with no additional epoxy. > > In either case if one wanted after this procedure, you could apply the wax paper as Virgil said or construction plastic to the final layer. You will have to adjust cure times since the layup will not get the same exposure to the air as without the wax paper or plastic... > > > Colin Rainey > First National Mortgage Sources > Lending Solutions in All 50 States > brokerpilot9...@earthlink.net > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
