Here's a tip from my woodworking knowledge - if you use sandpaper, even wet/dry, to achieve a smooth finish make sure that you don't skip a grit number, it makes the surface harder to actually get smoother.
Here's a graphic http://www.briwax-trg.com/How to Use Briwax/Sanding Before Using Briwax/files/stacks_image_8578.jpg of what happens when you go from 80 to 180 using 4 grades and using 3 grades. The 4 grade process leaves a smoother finish. Rush Dougherty Tucson AZ 85719 > -----Original Message----- > From: EV [mailto:[email protected]] On Behalf Of Lee Hart via EV > Sent: Tuesday, February 28, 2017 10:13 AM > To: EVDL Administrator; Electric Vehicle Discussion List > Subject: Re: [EVDL] Silicon heat sink grease > > EVDL Administrator via EV wrote: > >> My plan was to hit it with a bit of sand paper just before connecting. > > > > Again, I'm not an expert, but I think I remember reading that > > sandpaper isn't so good for this. It roughens the surfaces, and that > > actually reduces the heat transfer. > > > > Someone correct me if this is wrong, but I think a very fine abrasive > > compound on the mating surfaces might improve their flatness and fit, > > and thus the heat transfer. Maybe something like jeweler's rouge? > > And I think you'd probably still need heatsink compound. > > I think David is right. The closer the fit, the better the heat transfer. If you were only doing a few > parts, you could lap the two parts together -- put a very fine abrasive between them with a > drop of oil or water, and rub them together to take the high spots off from each. > > But that's too tedious for a Curtis with dozens of parts. > > -- > Anyone can make the simple complicated. Creativity is making the complicated simple. -- > Charles Mingus > -- > Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA > (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
