Liam
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| posted on 2/2/12 at 05:40 PM |
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quote:
Originally posted by jacko
If you look at new buses the panels are only sika-flexed on apart from four 1/8 pop rivets in the corners
guess how i know
jacko
It's the future! Well actually the present and recent past too  . I used 3M VHB tape for all my panels and bugger all rivets. Used to stick
busses and trains together among other things. A couple of inches bond on 1" RHS is strong enough to support my weight. The tape's foam
carrier gives a nice 'dead' thud when you tap a panel - no rattling. I put a few rivets in corners to resist peel of the panels. Certainly
saves perforating your chassis with hundreds of rivet holes. A few pics of the joyously simple and satisfying process in my archive.
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Benonymous
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| posted on 3/2/12 at 03:40 AM |
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RK, the glassy surface you see on some composite panels comes from not only having a polished surface against the layup but also a way of compressing
the layup onto the shiny surface. The most practical way to do this is vacuum bagging. On some of the parts I've made, I got a lot of pinholes
in the weave so I just painted on a layer of slow curing epoxy. If you put it on nice and even, all the brush marks will flow out of the resin and
leave a decent looking flat surface which can be buffed up to anice shine.
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