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What kind of glue to use to skin the hatch
Posted:
Thu Sep 25, 2008 2:29 pmby shamrock
Im getting ready to glue the peice of luan to the galley hatch frame and I cant seem to find any info on what glue others have used to glue there luan down. I was going for "liquid nail" but Im not sure if the pressure of bending the luan to the frame will be to great for it to hold or if it will just spring back and rip where its glued.
Any help would be great..Thanks
Posted:
Thu Sep 25, 2008 2:36 pmby halfdome, Danny
Whatever glue you used to glue the rest of your teardrop would be my guess. I use Tightbond II. Since your using Luan I'd coat the plywood and the frame since Luan is so porous. 
Danny
Posted:
Thu Sep 25, 2008 2:49 pmby Mary K
I had 2 layers of skin. The first was luan that I glued with Titebond III and stapled to the spars. Then on the 2nd layer of birch I used PL construction adhesive and sand bags to even the weight distribution. I skinned the hatch before I attached it to the TD.
The TD 2nd layer went on with PL glue and 3 ratchet straps and shims.
I did one section at a time.
Good luck.
Mk
Posted:
Thu Sep 25, 2008 3:31 pmby Dean_A
Since my frame members were not *exactly* perfect (a bit wavy in some spots), I used a liquid nails-type adhesive that could handle gaps and still set up fine. I knew that I couldn't get the kind of nice, tight clamped-up seal that I would need for my titebond. It worked just fine (I used one layer of 1/8" ply).
Posted:
Thu Sep 25, 2008 4:03 pmby Toytaco2
I used PL Premium (polyurethane construction adhesive) for exactly the same reasons as Dean A. If you cut your vertical frame members from 3/4" ply as I did, its not that easy to get a perfectly uniform surface for gluing the plywood face to. The construction adhesive helps a little with this. IMHO the glue on the 2x2 hatch cross braces provides the best surface for the glue. Also, the construction adhesive gives you a little more "open clamping time" than the wood glues which is very helpful on this job. Here I was applying the glue for the interior skin. It came out rock solid.
Good Luck,
Mike
Posted:
Thu Sep 25, 2008 9:13 pmby starleen2
Note: I have found that PL Premium construction adhesive cures to a hard somewhat sandable substance while Liquid Nail skins and remains plyable for some time
Posted:
Fri Sep 26, 2008 4:21 amby SkipperSue
I used the TiteBond III on mine and left the straps on a few days. This is some excellent glue!!
Posted:
Fri Sep 26, 2008 10:34 amby Dean_A
starleen2 wrote:Note: I have found that PL Premium construction adhesive cures to a hard somewhat sandable substance while Liquid Nail skins and remains plyable for some time
Just for the record, I used the PL Polyurethane construction adhesive as well. It worked great.
Posted:
Fri Sep 26, 2008 10:39 amby Arne
though the type of glue is/may be important, the best thing is to run a shim/cleat across the top and bottom (and maybe straps) to hold the top and bottom edges in place until the glue is thoroughly dry/hard.
If you do that, the rest will normally stay in place. In my case, I screwed the top and bottom cleats in position. After the titebond II set up, I removed the screws and cleats and filled the holes... my tear is painted, so the filled holes were not a problem.