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#11
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Panel Materials
If you are going to be doing any composite cutting, I'd make sure you
use a diamond bit or blade. Carbide works, but diamond will still last longer. Also, if possible use water when cutting, this keeps the blade cool and will make it last longer, and keep the dust down. Wet tile saws work great. Be sure to wear a mask, carbon fiber can get nasty. Todd www.sandwichpanels.org |
#12
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Panel Materials
Brian wrote:
If you really need a thin core you might look at just using a peice of aircraft plywood. You can also save a small amount of weight by using 1/8" medium to hard model shop balsa for the core of a glassfibre panel - that's what Libelle panels are made from. This may also make the panel easier to make and to cut openings in than if it was ply. Glue the balsa together with white wood glue before its final shaping and doing the glassfibre layup. If you put one or two layers of 200 gsm (6 oz/sq.yd) glass on either side of the balsa you should have a good panel. Add a layer of 25 gsm (3/4 oz/sq.yd) cloth outside the heavier cloth to get a nice, smooth finish. As others have said, put a decently wide flange (25mm / 1") round the bottom of the panel to protect your legs. If you make the flange from all the layers surrounding the balsa that should do the trick. As others have also said, if the panel is part of the fuselage structure then buy a blank from the manufacturer. -- martin@ | Martin Gregorie gregorie. | Essex, UK org | |
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