<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14pt"><div>To interested parties,</div><div>I spoke with a 3d printing expert, Richard, regarding filling hollow sections of 3d printed items with</div><div>fiber reinforced resin. He hadn't heard of it, but thought it had a lot of potential.</div><div>He suggested watching out for heat generated in the exothermic reaction, as we had already</div><div>discussed, and printing a roughened interior surface as a key <span style="font-size: 14pt;">for the epoxy, to stop the exterior </span></div><div style="color: rgb(0, 0, 0); font-size: 14pt; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 14pt;">delaminating.</span></div><div>I also spoke to an epoxy tech who told me epoxy
only shrinks about 1/2% & with additives such as</div><div>milled fiber the percentile shrinkage of the whole will decrease proportionate to the additive.</div><div>So shrinkage may not be a major problem.</div><div>Will do some experimenting.</div><div>Alan</div><div><br></div><div><br></div><div><br></div><div><br></div></div></body></html>