I've always found it easier to scarf entire sheets together before cut out. That way I can use a straight edge along one side of the sheets to insure they are straight and I can use plastic, a 2x4, clamps and weights to press the joint all along and across its length to get a good tight fit.
I wonder why so many people join panels near the bow section where the largest amount of bending happens rather than the relatively straight stern section. It's noticable on a lot of plywood/fiberglass boat builds I've seen on TH-cam, notably with butt joints.
I would guess it's because you end up with the largest pieces of solid plywood doing it that way. But you're probably right that the physics would be better with the joints toward the aft.
If I remember correctly they put a scarf near the bow because a hull on plane doesn’t have very much impact at the bow. All of the impact is at the back third of the hull. I could be wrong 🤷♂️
Would it be significantly harder to assemble a boat if the pieces were just lapped? Or is it mostly an aesthetic choice? Cause I definitely wouldn't be bothered by a 1/4inch jog in the boat with the exterior protrusion facing aft, unless of course it made more work with the assembly
If you're going to title this video, "How to scarf plywood", you might want to show how to scarf plywood. Not show how to glue up pieces THAT HAVE ALREADY BEEN CUT! Thanks.
I've always found it easier to scarf entire sheets together before cut out. That way I can use a straight edge along one side of the sheets to insure they are straight and I can use plastic, a 2x4, clamps and weights to press the joint all along and across its length to get a good tight fit.
That makes sense
Thank you for making this video! The one note that stated "tack dry not cured" saved my bacon!!! And your layout was eye opening!
Thanks for taking the time to make this video, but can the title please be changed to 'how to glue two scarf joints together'
*NO*
I wonder why so many people join panels near the bow section where the largest amount of bending happens rather than the relatively straight stern section. It's noticable on a lot of plywood/fiberglass boat builds I've seen on TH-cam, notably with butt joints.
I would guess it's because you end up with the largest pieces of solid plywood doing it that way. But you're probably right that the physics would be better with the joints toward the aft.
If I remember correctly they put a scarf near the bow because a hull on plane doesn’t have very much impact at the bow. All of the impact is at the back third of the hull. I could be wrong 🤷♂️
Would it be significantly harder to assemble a boat if the pieces were just lapped? Or is it mostly an aesthetic choice? Cause I definitely wouldn't be bothered by a 1/4inch jog in the boat with the exterior protrusion facing aft, unless of course it made more work with the assembly
Hi. How do you ensure alignment of the 2 planks on the length?
Plans?
This video should be named 'how to epoxy a plywood scarf joint,' - it does show you how to scarf the plywood at all.
Cutting the scarf was covered in the previous video so yes it should have been titled building scarfed panels part one and part two.
How to draw
If you're going to title this video, "How to scarf plywood", you might want to show how to scarf plywood. Not show how to glue up pieces THAT HAVE ALREADY BEEN CUT! Thanks.
exactly, whole reason I clicked was to see how the hell to make the cut???
Watch part 1 *Dumb Dumb* ...