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01-21-2018, 06:51 PM
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#1
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Senior Member
Join Date: Nov 2013
Location: Jeromesville, Ohio
Trailer: 2014 Escape 21' pulled with 2014 Silverado Crewcab
Posts: 853
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Threaded inserts or big screws?
I just ordered a Lagun table mount. I need to reinforce the back of the U-shaped dinette to mount it. I am going to use some heavy duty shelf brackets and 3/4" plywood as others have done.
To anchor into the floor under the bench would threaded inserts or just plain big old wood screws be best? If inserts what type? I see brass, cast, etc. Wood workers chime in please.
(I am a big fan of overkill.)
__________________
Carl,
"Isn't it amazing how much stuff we get done the day before vacation?"
Zig Ziglar
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01-21-2018, 06:58 PM
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#2
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Senior Member
Join Date: Dec 2013
Location: Westcliffe, Colorado
Trailer: 2010 EggCamper (#083); 2017 Escape 21 (#053); 2016 F-150 5.0L FX4
Posts: 1,765
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It may be overkill, but if you're sure there is nothing under the floor in that area, I'd consider drilling all the way through the floor and using bolts with big heavy duty fender washers to spread the stress across a broader area of the wood flooring and lock nuts so nothing vibrates loose.
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01-21-2018, 07:02 PM
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#3
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Senior Member
Join Date: Oct 2008
Location: North Vancouver, British Columbia
Trailer: 2009 Escape 17B 2020 Toyota Highlander XLE
Posts: 17,136
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Could use the same bolts, maybe, to mount a TP holder there.
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What happens to the hole when the cheese is gone?
- Bertolt Brecht
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01-21-2018, 07:36 PM
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#4
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Senior Member
Join Date: Jun 2010
Location: Central, Pennsylvania
Trailer: Escape#5 2022 E19
Posts: 26,268
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I believe the fresh water tank is under there....go for the 8" lag bolts and you will never have to worry about cleaning or sanitizing your fresh water tank......
__________________
Jim
Sometime life gets in the way of living.......
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01-21-2018, 07:51 PM
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#5
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Senior Member
Join Date: Nov 2015
Location: Baytown, Texas
Trailer: 2017 21' Escape - upgraded version
Posts: 2,697
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Quote:
Originally Posted by skiman
I just ordered a Lagun table mount. I need to reinforce the back of the U-shaped dinette to mount it. I am going to use some heavy duty shelf brackets and 3/4" plywood as others have done.
To anchor into the floor under the bench would threaded inserts or just plain big old wood screws be best? If inserts what type? I see brass, cast, etc. Wood workers chime in please.
(I am a big fan of overkill.)
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It depends. If you are going to install the screw once, a wood screw works fine. If you are going to remove/replace the screw often, something like a "E-Z LOK" would be advised. Brass is soft, Zinc crumbles - I tend to use SS inserts as they hold up well.
__________________
Normal people believe that if it ain't broke, don't fix it.
Engineers believe in fixing it so that it never breaks.
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01-21-2018, 08:36 PM
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#6
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Site Team
Join Date: Dec 2017
Location: Mid Left Coast, California
Trailer: 2014 Escape 21
Posts: 5,119
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for threading a bolt into plywood, I've used t-nuts, like these. you drill the plywood oversize, and use small (#8?) wood screws to secure the t-nut flange to the opposite side of the board than the bolt will be threaded in from...
these come in various sizes, ones I last used were like 3/8-16 or something. note, there's another variety of t-nut that has 3 prongs you hammer into the wood instead of the screw holes, those will NOT work with plywood
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01-21-2018, 09:37 PM
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#7
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Senior Member
Join Date: Jan 2014
Location: North Van., British Columbia
Trailer: 2014 Escape 19, sold; 2019 Escape 21, Sept. 2019
Posts: 8,743
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These thread inserts came from Home Depot. The wide flanged threads are far stronger than screw threads. Put masking tape on the drill 1/2" up to avoid drilling past the plywood.
They take a 3/16" 10-24 machine screw which is shown as an installing tool and projecting from the base before shorter machine screws were installed.
Ron
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