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1. 03:13 PM - Re: screws in fiberglass (Dave Saylor)
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| Subject: | Re: screws in fiberglass |
There are lots of inserts you can use to put threads into a cored
structure. If you look around (or call me), you can get specialty
inserts made just for bonding into panels. For example, here's a
link:
http://www.gen-aircraft-hardware.com/viewImage.asp?item=NAS1832-3-3&folder=basic
T-nuts and other inserts work almost as well for a few screws here and
there. They take a little more fiddling to get them into the core and
secure, but they cost pennies as opposed to dollars for the inserts
above. Make sure the inserts are securely attached to the core and to
the skin, and test how well they attached by giving the insert a good
tug.
Keep in mind that inserts are for non-structural applications like
consoles, lights, belt and headset racks, etc. Anything that takes a
load like shoulder belts, cargo tie downs, etc., need a much stronger,
tested, engineered solution.
My overhead light console is attached with five very small sheet-metal
screws. It comes off very infrequently so I'm not too worried about
wearing out the holes. I could always push a little epoxy into the
hole if it stripped.
FWIW, I tried to get Vans to sell my overhead console, but they were
worried about the tiny holes in the inner skin of the cabin top. So
keep in mind that Vans isn't going to be happy about hearing that you
put holes in the cabin top. Personally, I'm not worried about what I
did to mine.
Dave Saylor
AirCrafters
140 Aviation Way
Watsonville, CA 95076
831-722-9141 Shop
831-750-0284 Cell
On Sat, Oct 16, 2010 at 4:43 PM, John Gonzalez <indigoonlatigo@msn.com> wrote:
> I held my custom overhead console with eight to ten SS screws that went into
> SS threaded inserts which I epoxied into the cabin top. If you have access
> to a sandblaster to etch the insert surface even better.
>
> Here is only a link for showing what I am referring to:
> http://www.woodcraft.com/Product/2001048/1708/38-24-Brass-Threaded-Inserts-(10).aspx
>
>
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