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Step 4Second vacuum lamination
The next lamination, this time the bottom skin of the deck, goes pretty much like the first, with one addition, you're going to attach the truck support inserts at the same time.
Get your balsa sheet and fiberglass ready as before.
I put a couple of layers of glass at the bottom of the holes for the truck inserts, same size as the holes, and cut a few pieces of glass a little bigger than the inserts to go on top.
Mix up the epoxy resin as per manufacturer's instructions, again probably not more than a few ounces. Pour a bit into the holes for the truck inserts and smear it around to saturate the glass you put down there. Then stuff the truck inserts in. Lay the small cut patches of glass over the truck inserts, and wet it out with the epoxy as well. Then wet out the layer of glass that is on the balsa skin, and flip it over on to the deck, which is on the mold already.
Then just tape it lightly to hold it all in place, wrap again with release film, tape tightly, then bag it all again and suck out the air.
A note: It is very important to pull the release film tight over the whole thing before bagging, or it can crease and fold in between lamination layers.
Again, I bridged the whole assembly and weighted the center to create camber.
Leave the whole thing in the bag, under vacuum, until the epoxy is well-cured (check epoxy directions). I did mention that in the first lamination, right? Well, you should read all the directions before starting anyway!
Did I say sorry about my cluttered garage?
Sorry.
Still a little springback from this lamination, but much better than before.
Get your balsa sheet and fiberglass ready as before.
I put a couple of layers of glass at the bottom of the holes for the truck inserts, same size as the holes, and cut a few pieces of glass a little bigger than the inserts to go on top.
Mix up the epoxy resin as per manufacturer's instructions, again probably not more than a few ounces. Pour a bit into the holes for the truck inserts and smear it around to saturate the glass you put down there. Then stuff the truck inserts in. Lay the small cut patches of glass over the truck inserts, and wet it out with the epoxy as well. Then wet out the layer of glass that is on the balsa skin, and flip it over on to the deck, which is on the mold already.
Then just tape it lightly to hold it all in place, wrap again with release film, tape tightly, then bag it all again and suck out the air.
A note: It is very important to pull the release film tight over the whole thing before bagging, or it can crease and fold in between lamination layers.
Again, I bridged the whole assembly and weighted the center to create camber.
Leave the whole thing in the bag, under vacuum, until the epoxy is well-cured (check epoxy directions). I did mention that in the first lamination, right? Well, you should read all the directions before starting anyway!
Did I say sorry about my cluttered garage?
Sorry.
Still a little springback from this lamination, but much better than before.
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