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Leos Web Site
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Date: 1-29-2016
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Number of Hours: 4.00
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Manual Reference:
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Brief Description: molding the finish part
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I have been filling, sanding, priming, filling an more sanding a little each night for a week. The mold is not a perfect surface, but better than needed to cover with cloth. I am not looking to go into the bussiness so no need to go beyond what is needed to pull a good part. I am sure it will be good for several if someone wants one, but the limitations are that it will not be paint ready without additional work.
I have all of the supplies ready to set up a resin injection process. So in the next few days I'll make a final part (hopefully).
5 coats of parting wax, each one is allowed to dry and buffed out.
PVA will go on next, but it is very fragile so I will get everything else ready first.
1. The back side of the mold is covered with cotton breather cloth as the vacume line will go on the back.
2. I cut 8 layers of glass and fit them into the mold, trimming the edges as needed.
3. a layer of peel ply is added next
4. a layer of vacume flow media is added.
5. cotton breather cloth is wrapped on the edges to make sure air flow around the edges is not blocked
6. a strip of resin distribution channel goes in to down the center of the part
7. last comes the vacume bag and hoses.
Once that is all set, off it all comes to coat the part with PVA.
So, the PVA went on with an orange peel finish. I'm not sure what makes iit do that, but in the end, it really didn't make any discernable difference in the part. Everything went back in the moldand all was ready.
The resin flow in was cool to watch. I managed to get a couple of bubbles in the line when the tube poped out of the cup. I hoped the vacume would work them out, I did end up getting some voids. I also injected too much resin as it continued to spread well after I was "done". making it's way almost to the center of the back. I also learned tygon tube is not resiliant enough for high vacume. It colapses.
The trimed part weighted in at 4.1 pounds, Very light for the 7' long size. I'm not sure how much carbm fiber would have saved at almost 10X
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vacume infusion process
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resin flowing in
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resin fulley infused
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