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^ >> ^ >>>> Plugs UP <<<< ^ << ^ <<<
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Well what do you know, you guys were spot on with the mold making process.
I used the 10 degree wood wedges and just kept putting more in and pretty
soon, POP, out came the plug. Guess I used enough wax:) Speaking of, once
again you composite folks were right since the wax I used was carnuba wax
but not the absolutely pure stuff (had some "additives") and the gel coat
has spots in it where it "pooled" or rather didn't pool and flow evenly.
Live and learn. I needed to sand the female mold anyway since my plug had
some tiny scratches made by the Al forming process and I didn't want to try
to sand them out. It's amazing how these transfer to the mold. All should
be good with some bondo and glazing putty and then lots of primer and fine
sanding :)
Any advice on the type of plastic to use for vacuum bagging? Something
flexible enough to stretch down into the bottom of the spinner with no seams
would be nice though I suppose I could live with seems on the inside of the
spinner.
With all this composite work it looks like I'm going to have to build me a
bagged wing and kevlar fuse speed-400 pylon racer (all the electric r/c guys
will know what I'm talking about.)
Oh, now that I'm into this I thought of a better way to make the plug (vs
using an existing Al spinner) and that's with my CNC equipment. I can just
cut up foam disks and laminate them together and then make a spindle that I
can mount on my vertical router. Spin this puppy up and CNC cut the profile
with the router. Should make a real slick plug with a very exact shape. If
anybody wants to make a custom spinner let me know and we'll give it a try.
Joa
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PIW Engraving and Milling
"Affordable CNC"
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