Replies

1. 
   _mj_ | Mar 09, 2020 07:36am | #1

   PVA creeps. Unibond, epoxy, or similar should be used for a hard glue line on all but the mildest of bent laminations.

2. 
   DRBWWing | Mar 09, 2020 09:57am | #2

   +1

3. 
   pintodeluxe | Mar 09, 2020 01:39pm | #3

   I did some testing on this with PVA glue. Specifically I was using Titebond II on rocking chair rockers. I looked at both initial springback, and creep over time. I found that with (8) 1/8" laminations on a bending form with a 42" radius, there was negligible initial springback. Next I compared a rocker fresh off the form to one I made several months ago. The curves were identical. The edges were flush. No issues whatsoever with PVA and this type of lamination.

   If you are planning on using a very tight radius, or very few number of laminate strips, then you might have a case for specialty glues.

4. 
   tom77 | Mar 09, 2020 01:56pm | #4

   Thanks to both for your comments. I have used Gorilla Glue previously and had good results, but I didn't want to deal with the cleanup mess this time.

5. 
   john_c2 | Mar 09, 2020 06:34pm | #5

   PVA is white glue, like the Elmer's we used in school. PVA will creep, for sure.

   Yellow glue such as Titebond I and II are aliphatic resin glues. They will not creep.

6. 
   pintodeluxe | Mar 09, 2020 07:56pm | #6

   Unfortunately, I don't think the color is an accurate way to determine the glue type. According to Titebond, TB I is an aliphatic resin and TB II is a cross-linking PVA.

7. 
   geedubbee | Mar 10, 2020 02:44pm | #7

   From their website: