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I am curious why you have a preference for vacuum bagging over infusion. I know whenever I get within a foot of epoxy, it gets all over me. The infusion seemed really neat, and no more effort than vacuum bagging. What am I missing?
- Gardner
On Thu, Dec 25, 2008 at 1:25 AM, Rob Denney <harryproa@...> wrote:
I am building with Polyore, under vacuum, but not infusing (too much hassle for small panels). If it was not for the desire to get a mould finish on the outside, I would not have bothered bagging it. I would not infuse Polycore or Nida for the reasons stated earlier, and would not infuse foam unless there were time constraints. The 15m lee hull will be built in one panel, 7m x 15m, hand laid and vac bagged, not infused.
Hi, I got my first hands on demonstration of vacuum resin infusion from George Kuck of this forum last weekend. Thanks George! He was using core cell and had...
Hello Gardner,  I have never worked with nida core but have also been thinking of how you can resin infuse both sides at one time. The way I think I would...
G'day, Glad it went well, George. Infusing Nida is tricky. I would not drill holes in the core, you will use a fair bit of extra resin. George's suggestion...
Hi Rob, I thought you have recently been building with a honeycomb core. Have you been infusing that on just one side at a time, or is it different enough from...
Hi, I am planning on sending off for samples of various core materials to evaluate. My first project with these will likeley be a 10' catamaran dinghy, but it...
Hi, I apologize. I hit send too early. I am also curious about the fiberglass/carbon. Can I get away with just using fiberglass cloth for the hulls? What...
I am building with Polyore, under vacuum, but not infusing (too much hassle for small panels). If it was not for the desire to get a mould finish on the...
From my understanding, preresined glass over Nidacore then bagged may be a bit lighter than resin infusion. The underneath side should be realtively easy to...
Rob, I am curious why you have a preference for vacuum bagging over infusion. I know whenever I get within a foot of epoxy, it gets all over me. The infusion...
The scrim of polycore and the joints takes up a bit of resin. It may be slight leas uptake under vacuum bagging rather than infusion and less likely to get...
G'day, Infusion done perfectly is the same weight as vacuuming, but perfect is pretty hard to achieve, so it is invariably heavier. Infusion is a very neat...
All the info I have seen on infusion claims to be lighter than vacuum bagging. Interesting to know that isn't true in practice. How do you wet out the fabric...
G'day, Infusion fills every crevice in the core, and is particularly heavy when used with slit core on curved surfaces, which is where 95% of infusion is done....
-I am not clear on the process in when bog is applied and what allows the excess resin to disperse and still allow release of the immediately adjacent surface...
I swear that everytime I get an answer, it brings up more questions <grin>. Ok, so what I am hearing is that one reasonable way to build one of these boats...
G'day, Robert, The bog is applied to hand laid glass after it has gelled. Not to vacc'ed laminates. Wetting out on a flat surface then transferring the wet...
I was just wondering about keeping the resin usage to a minimum. I wondered if when applying directly it would be difficult to keep the resin levels to be just...
From my readings, 600g glass 1:1 ratio with resin is regarded as pretty good for hand layup. 2/3 resin to 1 glass is regarded as reasonably easy for vac...
Hello, Nida Core web sight has information that may help.  http://www.nida-core.com/english/nidaprod_honeyinfo_working.htm  I noticed that they state that...
-I have heard of people using bird netting on the underside as a dipersal medium for resin infusion. I recall sending some info to ROb on this about a year or...
Hello, One book I would recommend is "One-Off Airex Fibreglass Sandwich Construction" by Thomas J. Johansson. It is a bit dated but a vary good book to...
Hello Rob, Do you have a 7m x 15m table or do you laminate smaller parts of panel and join together to form one large panel ? I do not see how you can...
It certainly sounds a bit daunting but should be doable. It may be easier if using a resin that needed post heating. A wetting out machine for the cloth might...
Hello Gardner, Polycore is not sold in US but you can get Nida core. They can send you a sample box.  http://www.nida-core.com/english/  See message post...
George, I have sent a request for nida core, but have not received any response yet. If I don't hear back soon, I will try again. What have you found for...
Hello Gardner, and group.  You can purchase Nida Core from Noa Marine or LBI Fiberglass  http://www.noahsboatbuilding.com/noahusa/searchresult.asp  ...
Hello, I just found my notes on the Airex R63.8 foam core, The best price I was quoted was $3177. for a case of 20 from Eastern Burlap Co.,located in Norfork...
George, Thanks. It is helpful to have an idea of price. I checked the web site and they don't seem to sell it anymore, but they have some good prices on core ...
It may not be listed on web sight but I think they can get it. I have never purchased anything from them but they do seem to have good prices. I will have...
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