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Author Topic:   attaching starboard to deck withot drilling
walf posted 08-12-2005 03:14 PM ET (US)   Profile for walf   Send Email to walf  
I want to attach starboard to the deck without drilling holes . Will epoxy work well enough so that i can secure a Pate tank with eye hooks attached to the starboard.
mike pape posted 08-12-2005 03:54 PM ET (US)     Profile for mike pape  Send Email to mike pape     
nothing nothing sticks to starboard
bsmotril posted 08-13-2005 10:10 PM ET (US)     Profile for bsmotril  Send Email to bsmotril     
There's one way to do it that I have found will work. I use this to hold starboard mounting pads for transducers to the transom. Several I've done are going on 10 years with no bond failure. The key is to use a bedding compound on the starboard, and give it something mechanical to hold onto because, as other said, nothing really sticks to it. What you do is route parallel dovetail grooves on the back of the starboard, about 1/4" deep is fine. The undercut edges of those grooves gives the bedding compound something to hold on to. Then you fill the grooves completely full with 3m5200 or 4200 compound, and butter the back completely with another 1/8" of the stuff. Then, set it in place on top of a couple of thin shims (1/16") so as not to squeeze it all out. Tape it in place, and let it cure for 4-5 days before doing anything else with it. Cleanup will be a lot easier if you mask around the area of the deck where the piece will lie. When you get it down, run a fillet bead of compound around the edges to fill any gaps between the piece and the deck. Dress the bead with the back of a plastic picnic spoon dipped in water, and remove the masking right away while the compound is still soft.
walf posted 08-14-2005 09:10 AM ET (US)     Profile for walf  Send Email to walf     
BSMOTRIL, what are dovetail grooves and what is the purpose of the thin shims? Are they between the deck and the starboard. Are you putting the starboard on the deck right after you fill the grooves and butter it or are you attaching after 4 or 5 days. Maybe this sounds like a stupid question, but I am a little confused about your description.
bsmotril posted 08-14-2005 11:40 AM ET (US)     Profile for bsmotril  Send Email to bsmotril     
The dovetail grooves give the hardened 3M 5200 compound something to grip, since it does not stick well to starboard. Even though it won't stick well to a plain flat piece of starboard, the compound does harden though, and the undercut edges of the groove hold onto the compound in the groove, which in turn bonds tenaciously to deck. The shims keep all the compound from squeezing out when you put the piece onto the deck.
Plotman posted 08-14-2005 11:45 AM ET (US)     Profile for Plotman  Send Email to Plotman     
If you are ever planning on removing the starboard, DO NOT use 5200 to try to glue it down. You will have a much bigger repair job if you ever want to remove it that fixing 4 small screw holes. The 5200 will effectively be premanantly bonded to the deck, and you will damage it getting it off.
dfmcintyre posted 08-14-2005 12:22 PM ET (US)     Profile for dfmcintyre  Send Email to dfmcintyre     
Walf -

...I hope this works....

If your having trouble what a dovetail groove looks like:

________ |
\ / |
_____\ /______________________________|

If the starboard was on edge. You use a router bit.


dfmcintyre posted 08-14-2005 12:23 PM ET (US)     Profile for dfmcintyre  Send Email to dfmcintyre     
well....THAT is certain to confuse....
banff22 posted 08-14-2005 12:41 PM ET (US)     Profile for banff22  Send Email to banff22     
If you have an older dresser pull out a drawer. Quite often a dovetail joint is used when joining a drawer together.

On the left side in this link is picture of a drawer assembled using dovetail. At least I hope the picture is ther when you click on it.

A heck of a good try using only a keyboard Don. :)


banff22 posted 08-14-2005 12:46 PM ET (US)     Profile for banff22  Send Email to banff22     
Okay, the link didn't work quite right. They rotate the pictures. So go to the link, go to project picture galleries, then go to the gallery D4. It even gives you an idea of the different types and uses.
macfam posted 08-14-2005 07:05 PM ET (US)     Profile for macfam  Send Email to macfam     
I firmly disagree regarding some opinions.
3M Scotchweld DP 8005 two-part epoxy DOES bond Starboard-to-Starboard superbly.
I have manufactured Starboard storage boxes/seats and they are are "glued" together with Scotchweld DP 8005.
They've taken one hell of a beating for over three years and are solid as a rock.

bsmotril posted 08-15-2005 10:17 AM ET (US)     Profile for bsmotril  Send Email to bsmotril     
Thank you for that information about Scotchweld. What do you need to do to prep the Starboard surface before gluing? BillS
macfam posted 08-15-2005 11:22 AM ET (US)     Profile for macfam  Send Email to macfam     
Make sure your surfaces are clean & grease free.
You could "rough it up" with sandpaper.

DP 8005 is expensive. It needs a 3M "plastic gun" to apply.
The work time is VERY short, about a minute. And this bond is PERMANENT.

Several years ago, I called 3M, and Customer Service connected me to an Chemical Engineer who was really helpful.
You may want to do the same, and see what advice they give.

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