Re: [bolger] Gluing plywood sheets
BO>Thanks. What is a 'drywall' screw? We must have these but known under a
BO>different name.
Drywall screws, wallboard screws, gyprock screws, plasterboard screws, a
rose by any other name...
BO>If the first two sheets of ply are each only 7mm thick there is not much
BO>meat for any screw to hold in.
This is not normal screwing but clamping. Drill a pilot hole. Use
softening. Readhttp://www.ace.net.au/schooner/newtech.htmDon't mind
the screw points sticking out the other side.The screw is only to hold
thetimber while the epoxy sets.
Tim & Flying Tadpole
BO>------------------------------------------------------------------------
BO>eLerts
BO>It's Easy. It's Fun. Best of All, it's Free!
BO>http://click.egroups.com/1/3080/6/_/3457/_/955574024/
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BO>different name.
Drywall screws, wallboard screws, gyprock screws, plasterboard screws, a
rose by any other name...
BO>If the first two sheets of ply are each only 7mm thick there is not much
BO>meat for any screw to hold in.
This is not normal screwing but clamping. Drill a pilot hole. Use
softening. Readhttp://www.ace.net.au/schooner/newtech.htmDon't mind
the screw points sticking out the other side.The screw is only to hold
thetimber while the epoxy sets.
Tim & Flying Tadpole
BO>------------------------------------------------------------------------
BO>eLerts
BO>It's Easy. It's Fun. Best of All, it's Free!
BO>http://click.egroups.com/1/3080/6/_/3457/_/955574024/
BO>------------------------------------------------------------------------
Vacuum bagging pulls a head. Now I guess I'll have to build something
else in order to try it. (Oh, darn.)
How 'bout you Roger? What are you going to do?
else in order to try it. (Oh, darn.)
How 'bout you Roger? What are you going to do?
Roger:
In replying to you I didn't have it clear what you were up to, having
in mind fastening the edges of sheets. Everybody else seemed to get it,
and drywall screws certainly are the consensus of the group. I know they
are often used in very thin plywood.
One thing I forgot to mention about staples is that they say if you
drive them in through strapping tape, you can pull them all out at one
go.
For those interested in more on vacuum bagging, here's yet another
bibliographic entry: WoodenBoat #64, May/June '85 begins a step by step
article by Brown, Marples and Newick called Bagging the Gull wherein all
the mysteries of the bag are explained.
Saying all you need is 6-8psi for epoxy, they describe using an old
refrigerator all standing for the pump if you want to. Another
possibility is the 'Cheap Little Sucker' at
http://web2.airmail.net/redmonj/sucker.htm
Mark
In replying to you I didn't have it clear what you were up to, having
in mind fastening the edges of sheets. Everybody else seemed to get it,
and drywall screws certainly are the consensus of the group. I know they
are often used in very thin plywood.
One thing I forgot to mention about staples is that they say if you
drive them in through strapping tape, you can pull them all out at one
go.
For those interested in more on vacuum bagging, here's yet another
bibliographic entry: WoodenBoat #64, May/June '85 begins a step by step
article by Brown, Marples and Newick called Bagging the Gull wherein all
the mysteries of the bag are explained.
Saying all you need is 6-8psi for epoxy, they describe using an old
refrigerator all standing for the pump if you want to. Another
possibility is the 'Cheap Little Sucker' at
http://web2.airmail.net/redmonj/sucker.htm
Mark
Roger:
I haven't used staples myself but I've heard of people doing it. It's a
great idea. Fast.
Of those three glues Resorcinal is famous for needing good fits and high
clamping pressure. It might require quite a lot of staples to work
properly. That would also be true for Weldwood.
Epoxy only needs the pieces in contact, so I think that would be pretty
foolproof.
Someone else may know more about Polyurethane than me. I have trouble
getting the squeeze out right with it. I think I've put just enough on to
do the job, but it keeps foaming and foaming, and I keep wiping and wiping.
Contact is basically all you need with it too, though. It's not cheaper
than epoxy.
I guess you can tell why I like epoxy. The kind I get cures at 40 degrees.
Have fun,
Mark
If you can find and use plastic staples, rather than pulling them out, they
can be sanded away.
Roger Dewhurst wrote:
I haven't used staples myself but I've heard of people doing it. It's a
great idea. Fast.
Of those three glues Resorcinal is famous for needing good fits and high
clamping pressure. It might require quite a lot of staples to work
properly. That would also be true for Weldwood.
Epoxy only needs the pieces in contact, so I think that would be pretty
foolproof.
Someone else may know more about Polyurethane than me. I have trouble
getting the squeeze out right with it. I think I've put just enough on to
do the job, but it keeps foaming and foaming, and I keep wiping and wiping.
Contact is basically all you need with it too, though. It's not cheaper
than epoxy.
I guess you can tell why I like epoxy. The kind I get cures at 40 degrees.
Have fun,
Mark
If you can find and use plastic staples, rather than pulling them out, they
can be sanded away.
Roger Dewhurst wrote:
> Can anyone offer suggestions on the use of a tacker/stapler to hold
> sheets of plywood together while glue (epoxy, polyurethane or
> rescorcinol) is setting? Is this an effective way of maintaining
> sufficient contact pressure?
>
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