Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-06-2021, 03:27 PM   #1
Guru
 
Seevee's Avatar
 
City: st pete
Vessel Model: 430 Mainship
Join Date: Sep 2016
Posts: 3,159
Securing screws in thin walls

What does the collective wisdom use to fix screws that are used to hold stuff in thin walls.....


EG: the sides walls of the boats like interior of the flybridge or non supporting walls that might be fiberglass or a thin wood or plastic product. Thin, like 1/8th to 1/4 thick. And there's a drink holder, or snaps for a covering or whatever, that the screw is suppose to hold. And there's just not enough "meat" in the sidewall to prevent the screw from loosening up and not holding.


Now, there's a lot of techniques, and pretty easy if you can get to the back of it. But if you can't get to the back, how to you enlarge the wall side on the inside or is there a favorite fastener that works.



Rivnuts "might" work, but need one that would strongly grip the wood. Do they make one that would work?


Have also tried stuffing epoxy in there, works fair....


Ideas?
__________________
Seevee
Seevee is offline   Reply With Quote
Old 09-06-2021, 03:49 PM   #2
Guru
 
rwidman's Avatar
 
City: North Charleston, SC
Join Date: Sep 2010
Posts: 4,659
You could try attaching things with heavy duty double stick tape. Press as hard as you can for 60 seconds and then don't use a cup holder or such for another 24 hours.

Toggle bolts are an option as well as the screw in anchors made for attaching things to drywall.

Look around at the home center for options.

Keep in mind that an 1/8" thick panel isn't really intended for holding much weight.
rwidman is offline   Reply With Quote
Old 09-06-2021, 04:03 PM   #3
Veteran Member
 
City: Supply, NC
Vessel Model: 2006 Mainship 34T
Join Date: Dec 2019
Posts: 68
I guess it always depends on how heavy you want to hold. My wife loves the self stick hooks from 3M (I think). If they don't work then maybe you can get serious with something like 5200 if you are going metal to fiberglass. But 1/8 of an inch can only hold so much. Defeats the purpose of bedding a hook with 5200 if the glass bows outward from the weight. That stuff sure does hold. Great adhesive IMO.


Don
DonW28 is offline   Reply With Quote
Old 09-06-2021, 04:08 PM   #4
TF Site Team
 
Bacchus's Avatar
 
City: Seneca Lake NY
Vessel Name: Bacchus
Vessel Model: MS 34 HT Trawler
Join Date: Nov 2014
Posts: 5,636
Typical use for "well nuts" https://www.google.com/search?q=well...ile-gws-wiz-hp

The plus is that these are either brass or SS so better than steel anchors typically used around the S&B home.
__________________
Don
2008 MS 34 HT Trawler
"Bacchus"
Bacchus is offline   Reply With Quote
Old 09-06-2021, 04:45 PM   #5
Guru
 
HopCar's Avatar
 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 4,941
Bacchus beat me too it. Iíve often used well nuts. I had a problem with canvas snaps pulling out of the fiberglass on my flying bridge. I replaced the tapping screws with Wellnuts and never had another pull out.
Attached Thumbnails
0DE3E846-3E53-4282-A954-A000F965BC54.jpg  
__________________
Parks Masterson
HopCar is offline   Reply With Quote
Old 09-06-2021, 05:05 PM   #6
Guru
 
City: Boston
Vessel Name: Adelante
Vessel Model: IG 30
Join Date: Nov 2016
Posts: 1,316
I epoxy scraps of wood using West 610 epoxy I hold them in place with duct tape. I should probably sand surfaces first but I don't. No problems. If I can't access the location then I move the fastener.
SoWhat is offline   Reply With Quote
Old 09-06-2021, 05:07 PM   #7
TF Site Team
 
Comodave's Avatar
 
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 13,323
Agree on well nuts.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you arenít one, there is no explanation possible.
Comodave is offline   Reply With Quote
Old 09-06-2021, 07:59 PM   #8
Guru
 
psneeld's Avatar
 
City: Ft Pierce
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 24,586
Command hooks ....impressed me now for years.
psneeld is online now   Reply With Quote
Old 09-06-2021, 09:09 PM   #9
Guru
 
janice142's Avatar
 
City: St. Pete, FL
Vessel Name: Seaweed
Vessel Model: Schucker mini-trawler
Join Date: Oct 2011
Posts: 1,144
Aboard Seaweed I wanted to secure a fire extinguisher to the cockpit bulkhead. There was fiberglass and not much else. Definitely nothing to screw into, so I took a piece of scrap teak and made a fish. The first was better, but I cracked it when I did not predrill for the screw. This is the second version.



I've also covered a hole (former light) by thru-bolting from inside to outside my cabin. Copious sealant of course, and now I have outside a place to hang a fender. Inside I have a picture. This is not fancy however by matching holes I solved the problem (fender placement)



I know yours is a yacht (she's gorgeous) however if you can find something useful for the otherside, and match the holes or hide them.... well, that's what worked for me. Good luck.
__________________
Janice aboard Seaweed, living the good life afloat...
https://janice142.com
janice142 is offline   Reply With Quote
Old 09-06-2021, 11:11 PM   #10
Guru
 
Seevee's Avatar
 
City: st pete
Vessel Model: 430 Mainship
Join Date: Sep 2016
Posts: 3,159
Quote:
Originally Posted by Bacchus View Post
Typical use for "well nuts" https://www.google.com/search?q=well...ile-gws-wiz-hp

The plus is that these are either brass or SS so better than steel anchors typically used around the S&B home.

Bacchus


Yep that is basically what I'm looking for. But need something that would hold in place for removal and that's where I found the cross nuts.

Not looking for 10/32 nuts with a flat head.... would be perfect. Thx.
__________________
Seevee
Seevee is offline   Reply With Quote
Old 09-06-2021, 11:22 PM   #11
Guru
 
janice142's Avatar
 
City: St. Pete, FL
Vessel Name: Seaweed
Vessel Model: Schucker mini-trawler
Join Date: Oct 2011
Posts: 1,144
Suggest you try Pinellas Fasteners. It's a candy store for nuts, bolts and everything in between. They know their stuff.
__________________
Janice aboard Seaweed, living the good life afloat...
https://janice142.com
janice142 is offline   Reply With Quote
Old 09-06-2021, 11:44 PM   #12
Guru
 
Seevee's Avatar
 
City: st pete
Vessel Model: 430 Mainship
Join Date: Sep 2016
Posts: 3,159
Quote:
Originally Posted by janice142 View Post
Suggest you try Pinellas Fasteners. It's a candy store for nuts, bolts and everything in between. They know their stuff.

Janice,


Thx. I've been using them for years.... great selection and great prices. Probably a fourth of what HD or Fastinal charges. And great selection for a rather small store.
__________________
Seevee
Seevee is offline   Reply With Quote
Old 09-07-2021, 05:28 AM   #13
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 22,330
Both marine and aviation mfg. use stick on pads that have threaded nuts built in.
FF is offline   Reply With Quote
Old 09-07-2021, 05:59 AM   #14
Guru
 
Seevee's Avatar
 
City: st pete
Vessel Model: 430 Mainship
Join Date: Sep 2016
Posts: 3,159
Quote:
Originally Posted by FF View Post
Both marine and aviation mfg. use stick on pads that have threaded nuts built in.

Yep, use them in aviation. Click Bond is the manufacturer.... are there others?



However, can't find any of their mounts that are flush... maybe.... perhaps their nutplates.
__________________
Seevee
Seevee is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 10:35 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012