3/4 inch plywood or 3 pieces of 1/4 in plywood???????

[Jamie 10017]

I have been wondering if 3/4 in thick plywood would be better than 3 1/4 inch pieces laminated together or the other way around . Which one one would be stronger if any different at all? Just thinking about a project and what would be the best way to go. Im not worried about the time putting them together or the cost just the finished product . Thanks Jamie

 

[seakingbob]

Re: 3/4 inch plywood or 3 pieces of 1/4 in plywood???????

Depends on what your using it for. If you use marine plywood, It has more plys than regular plywood and is very strong

 

[tallwill38]

Re: 3/4 inch plywood or 3 pieces of 1/4 in plywood???????

I'd say use the pre-made 3/4 unless you are trying to form a curved component then three 1/4 laminated would be the only practical way.Reason I believe 3/4 from factory would be superior is due to factories use of controlled conditions,temperature and humidity,texture of bonding surface,heat and clamping pressure all controlled while adhesives set ect.. is probably going to out do anything us average guys could perform even with great care and modern chemicals.How would you clamp uniformly three sheets of plywood without driving screws ect..? just seems like a waste of money, time and labor to try and make something that you can buy already to go.Sure you could laminate together three sheets of 1/4 in. marine ply and end up with a total of nine ply in the laminate and the already made 3/4 in. marine ply is only seven ply but unless your adhesives and control over bonding are equal to or better than a factory your not gaining anything and your definitely losing money in the attempt unless you already have the 1/4 ply and the adhesives.What application are you considering this for?

 

[Yacht Dr.]

Re: 3/4 inch plywood or 3 pieces of 1/4 in plywood???????

.Sure you could laminate together three sheets of 1/4 in. marine ply and end up with a total of nine ply in the laminate and the already made 3/4 in. marine ply is only seven ply but unless your adhesives and control over bonding are equal to or better than a factory your not gaining anything and your definitely losing money in the attempt unless you already have the 1/4 ply and the adhesives.What application are you considering this for?

I would agree with most of this post .. but There are Many different MG plywood available.

Last time I checked Im useing 11 pile from my MG supplier.

Yes it does depend on if you need to bend and glue as opposed to just screwing and gluein .. Shape matters.

YD.

 

[BWT]

Re: 3/4 inch plywood or 3 pieces of 1/4 in plywood???????

6 of 1, half dozen of another. IMO it really doesn't make much difference. True the factory lamination is probably going to be better than most DIY can do on their own, but it still doesn't mean that a self done lamination is poor quality.

Also there is a bit of a trade off; working with thinner sheets is easier to handle than the thicker stock (especially if there are any tapers along the sides). Typically the way I approach is if it's smaller areas that are flat I'll use a solid thicker sheet; but if there are any irregularities (bends or tapers along the edges) or it's larger in size I'll go with the thinner stock and double or triple the lamination. With my shoulders it's easier for me to handle lighter stuff whenever possible

~BWT

 

[tallwill38]

Re: 3/4 inch plywood or 3 pieces of 1/4 in plywood???????

I would agree with most of this post .. but There are Many different MG plywood available.

Last time I checked Im useing 11 pile from my MG supplier.

Yes it does depend on if you need to bend and glue as opposed to just screwing and gluein .. Shape matters.

YD.

Yes that is true there are many varieties of marine ply, I was referring to Royal Marine Douglas Fir type sorry I didn't mention that in my original post.