I don't have access to a cnc mill, but realise that cnc is the best way to mill a mold. The 3d printing will take 10 parts x 10 hrs to print.... Not a sustainable process.Foilsnowsurf wrote: ↑Thu Jan 25, 2018 1:01 amHey, great posts and exchange of ideas here, and sources, thanks.
Just my experience, I could never get within 0.030" doing 3D printing for my wings, plus the cost of consumables. I switched to making my moulds out of corian, the scraps from counter shops are nearly free and mills really well with normal bits. By milling index points, both halves reliably join, and you can load the bottom and top shape carbon and resin, then vacuum. No extra resin, and near flawless finish in one shot. I am a diy amateur, but it works for me.
Would anyone care to comment on my fuselage plan after reading all the other ideas. I started with a LF, and still have it, but it is heavy. I want to turn a fuselage wood core on my lathe, then add the titanium flange nuts while it is easy to index perfectly, then wrap 24k tow with a 4mm build up from the front wing past the mast and tapering the build up toward the tail wing. Once wrapped, vacuum the assembly to complete it. My calculation is 20 dollars worth of tow applied under tension should do it. Anyone see a fatal flaw in this plan? I watched the video of mast making and this would allow me to apply the tow at 45 degrees with some higher degree wraps instead of uni. A minor touch up of the unloaded tips which can't be wrapped would finish the job. Would be at least half a kilo lighter than the solid aluminum LF fuselage.
Comments? Thanks, Robert
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