2025 Devlin Snow Goose Thread

[tod osier]

Got my scarfing joints done today. Was a little aggressive with my planer and chipped some edges, but the sheets were 8'3" long so I had a bit to play with and was able to recover.

View attachment 64519

That looks like fun. The gluing and clamping is a bit of a pain since it is hard to see everything (top and bottom) to get it lined up and it is easy to have a mess going on with the raw epoxy that you paint on to saturate the ends before adding the thickened epoxy. I had all of it slopped all over (raw and thickened) and squeezing out. To do a job like that, I learned to wet the material with raw epoxy and then wipe off the excess off after it sits a bit before adding the thickened stuff so you don't have all that loose raw epoxy running around. I was averse to putting holes in the panels too, to do it now I'd put a piece of 2X under (with visqueen ) and drive a bunch of screws through the works rather than trying to stack weight on the joint.

The best part is after you cut the hull panels you will have a bunch of 1/2-1" wide test strips left over to test the quality of your work.

 

[HenryHawthorne]

That looks like fun. The gluing and clamping is a bit of a pain since it is hard to see everything (top and bottom) to get it lined up and it is easy to have a mess going on with the raw epoxy that you paint on to saturate the ends before adding the thickened epoxy. I had all of it slopped all over (raw and thickened) and squeezing out. To do a job like that, I learned to wet the material with raw epoxy and then wipe off the excess off after it sits a bit before adding the thickened stuff so you don't have all that loose raw epoxy running around. I was averse to putting holes in the panels too, to do it now I'd put a piece of 2X under (with visqueen ) and drive a bunch of screws through the works rather than trying to stack weight on the joint.

The best part is after you cut the hull panels you will have a bunch of 1/2-1" wide test strips left over to test the quality of your work.

I've been telling myself cutting bulkheads is next, but think I'm just trying to delay the glue-up. I suspect I'll bond these pieces today. Will report back (if I'm not personally epoxied to the floor).

 

[RM Anderson]

Henry,
One trick I used was to do the glue--up on full size sheets of pink insulation with visqueen or packaging tape at the joint. This provided three things: a relatively straight edge to align the plywood, insulation from the cold floor and a place to cut out the panels without hitting the floor with the skill saw. Unless you have access to about 25 bags of lead shot, Tod's idea is a good one! I used a variation of that when I laminated my bulkheads by using pre-drilled nails through both sheets to locate the pieces precisely and to eliminate sliding when adding weight.
Definitely check your work with a chalk line before you walk away. Even a slight alignment error will cause issues later on.
Richard

 

[RM Anderson]

By the way, Tod's suggestion for wiping away raw epoxy is great advice, especially on fillets. Richard

 

[HenryHawthorne]

Well 4 pieces of 4x8 are now 2 pieces of 4x16. Did the work on the floor, on top of a piece of 3/4" ply I had. Laid 2 pieces out, screwed one down to the base ply, got the other lined up just right and marked the edges. Flipped and "primed", then added thickened epoxy. Flipped again, returned to my marks, and screwed the 2nd piece to the base ply. Repeated in top with the next 2 pieces. Then added a scrap 12" strip of 3/4 mdf along the top of the joints and screwed it down and to the base ply along the joint. Vizqueen between each layer. Will see in a couple days how it turns out.