AR-6 Wing mold construction
#53
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RE: AR-6 Wing mold construction
Not being one to go back on my word, I am sorry to say I am once again attacking a FG wing mold for the AR-6. After learning that my foam core wing construction skills leave much to be desired, I figure a CNC plug and FG mold are the only solution. As Kevin posted above, he did some really top notch CNC plugs out of MDF that I will be finishing and make the mold from. This will ensure a straight and true finished product.
Because the steps used are no different than what I've previously posted, I will not bore you all with the filling, sanding, priming, sanding etc and will just show the finished product. Hopefully, without bullet holes this time
Because the steps used are no different than what I've previously posted, I will not bore you all with the filling, sanding, priming, sanding etc and will just show the finished product. Hopefully, without bullet holes this time
#58
RE: AR-6 Wing mold construction
ORIGINAL: fizzwater2
The bullet holes were kinda fun in a warped way, though..
The bullet holes were kinda fun in a warped way, though..
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RE: AR-6 Wing mold construction
Lee, just de-molded my first Frekote mold, and all I can say is WOW! It was 10 times easier to release the plug than Partall & PVA ever were. Not to mention, it only took 1 hour to go from polishing the plugs, to laying down the surface coat for the mold. If you haven't started with the wax, I suggest you get a quart of Frekote FMS mold sealer and a quart of 770-NC release. If you want to use the wax & PVA for part production after you pull the molds, you can use the Frekote mold stripper and then apply the wax & PVA.
Just thought you might want to know!
Just thought you might want to know!
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RE: AR-6 Wing mold construction
Well, I am sorry to hear that Kevin. I used the mold sealer, followed by the release (3 coats of each, 10 minutes apart and wiping off before it dries) and it worked flawlessly for me. I know It only has a 6 month (or less, if you don't keep it airtight and room temperature) shelf life once opened. You also have to use a catalyzed 2K paint (I used an AU automotive from Napa) for best results. I know some resins & paints have compatibility issues with certain releases, so that might have been what happened to you. []
I did some sample lay ups prior to risking my plugs, so I was sure it would work with my components. I also laid up some flat panels (identical to the mold surface) so that I can test paint/resin compatibility prior to putting it into my molds. I broke my last quickie fuselage mold by using a resin/paint combination that went thru Partall #2 wax & PVA #10. [:@]
I did some sample lay ups prior to risking my plugs, so I was sure it would work with my components. I also laid up some flat panels (identical to the mold surface) so that I can test paint/resin compatibility prior to putting it into my molds. I broke my last quickie fuselage mold by using a resin/paint combination that went thru Partall #2 wax & PVA #10. [:@]