Ply de-laminating

[cagey]

What would be the best way to prevent or slow down the de lamination of 15/22 mm ply in sea water UK temps. Making flopper stopper so immersion will be not for long and will be dried after use as it will be stored below. Plan to varnish when I’ve made it but the end grain is concerning me. 700mm equilateral triangle rounded points, holes for bridle, will probably route edges to prevent splinters and to look nice.
Thanks
Keith

 

[lw395]

1) Buy good WBP plywood
2) epoxy the edges.

I would warm the ply with a hot air gun so the epoxy is thinned and runs into the edges.
Several coats of thinned varnish will also do a fair job.

 

[pvb]

You might consider using waterproof recycled PVC board instead.

 

[prv]

You might consider using waterproof recycled PVC board instead.

Would it be stiff enough?

Pete

 

[pvb]

Would it be stiff enough?

Reckon so.

 

[prv]

Reckon so.

Fair enough.

I'm not exactly sure what product you mean, the ones I know would probably either sag or snap (the latter being the lightweight foamed kind) but I'm sure there are plenty of others I've not come across.

Certainly should be admirably waterproof - and possibly lighter?

Pete

 

[chrishelen]

Could you dry it out and two pack paint it?

 

[matthewriches]

Make it out of ply then sheath it with epoxy or use something like the plastic shower board as pvb suggests.

 

[Deleted member 36384]

Many floor boards in dinghies, inflatable and GRP, survive for years getting periodically soaked and protected with just paint or varnish. Your home made flopper stoppers are probably quite safe with any old exterior paint.

 

[TQA]

Use chopping boards. Commercial kitchenware suppliers have larger ones.