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Log boaat or Sign up. Boat Design Net. If I want to infuse the same boat does it need higher glass content because of the vacuum compressing the laminate?

How many ifberglass of glass can be infused at one time diffetence it gets to hot like the transom Thanks. JeffreyMay 19, An infused laminate "will" have a higher glass content, that's one of the main goals.

You can infuse as many layers of glass to just about thickness you desire. The issue you need to work around Hand Laid Fiberglass Boat Construction Australia is the infused laminate will be thinner than a hand laid one and the result can be a more flexible. I understand the higher glass content ratio. But hand laid fiberglass boat construction difference you just add back the weight with more glass difffrence is the savings? Let me ask differencf another way.

If I use my same lamination schedule via infusion you mentioned I'd lose stiffness. How much glass needs to be added to maintain hand laid fiberglass boat construction difference same stiffness. Is there some formula for this? JeffreyMay 20, You need to design in a core or shape the part so the flex isn't noticed. The other option is to overbuild with more glass, it will make the part similar in weight to hand a laid one, but significantly stronger.

There are some products that can be used to stiffen an infused laminate, but they tend to act like a sponge and soak up resin to do their job. One big advantage with infusion is the containment of fumes and the differencs of human contact with the resins.

I think that's becoming a big issue with the authorities like EPA, health insurance. The economical and environmental advantages of using less resin are also a bboat. I've always wondered about the difference in the mechanical properties between an infused material and one that has been worked hand laid fiberglass boat construction difference a paint roller and a bubble buster or squeegee.

In the photo, there are spaces between the warp and weft of the woven roving. When we hand worked that, the individual rovings would flatten out sideways so when done there were constructionn spaces. If that was infused, I imagine there would be numerous pinholes in the laminate and numerous spaces of pure resin, fiberglss has little strength.

Almost all fiberglass materials have spaces and voids and it seems it needs 'working' of some sort to allow the microscopic filaments to move around, fill in spaces and also constructionn allow each filament to be encapsulated in resin. Two other questions I also wonder if there is much infusion done with polyester resin and if when infusing or hand laminating, does a person have to use fiberglass materials that are specific for one or the other process?

SamSamMay 23, You wouldn't use woven, it hand laid fiberglass boat construction difference be stitched fabrics and low vis resins would be a must for sure. The physical properties for tiberglass same weight laminate are significantly better with infusion.

The issue can sometimes be overcoming the difference in stiffness in laminates of the same strength. Extra thought, materials and design may need to be used constructipn make an infused part suitable for the same purpose as a hand laid one if stiffness is an important factor.

Thanks for the responses on. I was hoping for and easier more hand laid fiberglass boat construction difference answer I guess. Something like Maybe band not that simple. JeffreyMay 29, Jeffrey, Why would you add more glass, increase the core thickness and you retain the same strength, same stiffness, and save weight.

StumbleMay 29, Last edited: May 29, FishStretcherMay 29, Thanks Fish Stretcher! JeffreyMay 31, You must fibedglass in or sign up to reply.

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May 31, �� Home Boat Design Forums > Construction > Boatbuilding > Fiberglass and Composite Boat Building > Infusion VS Hand laid. Discussion in 'Fiberglass and Composite Boat Building' started by Jeffrey, May 19, Joined: May Posts: 14 Likes: 0, Points: 0, Legacy Rep: Jun 17, �� �Victory� Is a Hylas 46 has a solid hand laid fiberglass, hand laid fiberglass hull with Twaron laminates, vinyl-ester resins, and isophthalic gelcoat. Most buyers in the market for sailing or motor yachts consider fiberglass construction their first choice. However, many are not familiar with the differences in hull construction. Nov 25, �� A lot of marketing effort goes into discussing how different fiberglass yachts get built. Whether hand lay-up is as good as other methods or inferior to them, and whether the latest techniques in �vacuum bagging� and �infusion� yield a much stronger, more durable myboat160 boatplans: PHIL FRIEDMAN.

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